Coal uncovering construction method for blasting large cross-section gas tunnels

Abstract

A coal uncovering construction method for blasting large cross-section gas tunnels includes: analyzing stress distribution characteristics in front of a tunnel boring working face, and then determining a thickness calculation model of a reserved rock wall based on a limit equilibrium theory; establishing a tunnel model, simulating a construction condition and analyzing a construction result, and determining a thickness of the reserved rock wall; and fixing a detonator through a fixed sand ring, fitting the detonator with a construction hole by adjusting an adjustable protective plate, then embedding the detonator into a blast hole, and blasting the detonator for tunnel construction. Furthermore, an extension ring is fixed between the fixed sand ring and the adjustable protective plate.

Claims

1. A coal uncovering construction method for blasting a tunnel, comprising the following steps: fixing a detonator through a fixed sand ring, embedding the detonator into the blast hole, and blasting the detonator for tunnel construction; wherein an extension ring is fixed between the fixed sand ring and the protective plate, a bottom of the protective plate is rotatably connected with a support foot, an inner side of the fixed sand ring is connected with a plurality of extrusion rods, the plurality of extrusion rods are distributed in an array, an end of each of the plurality of extrusion rods facing towards a center of the fixed sand ring is fixedly connected to an adhesive plate, and a side of the adhesive plate facing away from the extrusion rod is connected to a sponge mat; wherein an outer surface of each of the plurality of extrusion rods is provided with a plurality of arc-shaped blocks, exteriors of the plurality of arc-shaped blocks are slidably connected with a plurality of support elastic pieces, the plurality of support elastic pieces are connected with the fixed sand ring and are distributed in an array inside the fixed sand ring, and the plurality of arc-shaped blocks and the plurality of support elastic pieces are arc-shaped and each of the plurality of arc-shaped blocks is matched with a corresponding one of the plurality of support elastic pieces; and wherein each of the plurality of extrusion rods is provided with an explosion-proof housing therein, the explosion-proof housing is provided with an energizing magnet therein, a side of the energizing magnet facing towards the adhesive plate is provided with a counterweight block, the counterweight block is provided with a follow-up magnet therein; when the energizing magnet is energized, a magnetic property of the energizing magnet is the same as that of the follow-up magnet, a side of the counterweight block facing away from the energizing magnet is provided with a knocking needle, a side of the knocking needle facing away from the energizing magnet is provided with a glass housing, the glass housing is loaded with corrosive liquid therein, a bottom end of the explosion-proof housing defines a liquid discharging hole, and the extrusion rod and the adhesive plate are respectively provided with through holes matched with the liquid discharging hole; wherein the fixing the detonator through the fixed sand ring, comprises: placing the detonator into the fixed sand ring, pushing the plurality of extrusion rods to move the plurality of adhesive plates connected to the plurality of extrusion rods until the plurality of sponge mats connected to the plurality of adhesive plates are attached to an outer surface of the detonator; and wherein after the detonator is embedded into the blast hole, the coal uncovering construction method further comprises: adjusting an angle of the support foot to support the protective plate, thereby to support the detonator in the blast hole.

2. The coal uncovering construction method for blasting the tunnel as claimed in claim 1, wherein an exterior of the counterweight block is slidably connected with a limiting frame, the limiting frame is provided with elastic pieces therein disposed on two sides of the counterweight block, and the elastic pieces are configured to support the counterweight block.

3. The coal uncovering construction method for blasting the tunnel as claimed in claim 2, wherein an end of the limiting frame facing away from the energizing magnet is provided with a rubber ring, and a buffer sponge is disposed between an exterior of the glass housing and the explosion-proof housing.

4. The coal uncovering construction method for blasting the tunnel as claimed in claim 3, wherein a side of the liquid discharging hole facing away from the buffer sponge is slidably connected with a magnetic closing block, a plurality of telescopic rods are fixed between the magnetic closing block and the explosion-proof housing, and a side of the magnetic closing block facing towards the buffer sponge is provided with a telescopic needle.

5. The coal uncovering construction method for blasting the tunnel as claimed in claim 1, wherein a side of the explosion-proof housing facing away from the adhesive plate is inserted with a hollow column, the hollow column is filled with colored smoke and defines a plurality of exhaust vents, each of the plurality of exhaust vents is provided with a counterweight ball therein, an outer surface of the counterweight ball is provided with a plurality of puncture needles, a supporting elastic rod is fixed between the counterweight ball and the hollow column, two sides of the counterweight ball are provided with elastic films, and the extrusion rod defines a plurality of through holes, which are matched with the plurality of exhaust vents.

6. The coal uncovering construction method for blasting the tunnel as claimed in claim 5, wherein the hollow column is provided with a plurality of stirring balls therein, and each of the plurality of stirring balls is connected to the hollow column through a connecting elastic rope.

7. The coal uncovering construction method for blasting the tunnel as claimed in claim 1, wherein the adhesive plate is slidably connected with a pair of jacking rods therein, a side of each of the pair of jacking rods facing away from the sponge mat is provided with a powder storage bag, and a side of the powder storage bag facing away from a center of the adhesive plate is connected with a powder discharging pipe in a penetrating manner.

8. A coal uncovering construction method for blasting a tunnel, comprising the following steps: providing an assembly for fixing a detonator, wherein the assembly comprises: a fixed sand ring; a protective plate; an extension ring, fixed between the fixed sand ring and the protective plate; a support foot, connected to a bottom of the protective plate; a plurality of extrusion rods, connected to the fixed sand ring and extending into the fixed sand ring; a plurality of arc-shaped blocks, disposed on an outer surface of each of the plurality of extrusion rods; a plurality of support elastic pieces, disposed on the fixed sand ring, and matched with the plurality of arc-shaped blocks; a plurality of adhesive plates, connected to ends of the plurality of extrusion rods facing towards a center of the fixed sand ring, respectively; and a plurality of sponge mats, connected to sides of the plurality of adhesive plates facing away from the plurality of extrusion rods, respectively; placing the detonator into the fixed sand ring, pushing the plurality of extrusion rods to drive the plurality of adhesive plates to move towards the detonator until the plurality of sponge mats are attached to an outer surface of the detonator to fix the detonator in the fixed sand ring; wherein each of the plurality of extrusion rods is pushed to drive the plurality of arc-shaped blocks to slide, thereby to push the plurality of support elastic pieces to bend and deform until the plurality of arc-shaped blocks slide over the plurality of support elastic pieces, and then the plurality of support elastic pieces reset; and embedding the detonator fixed with the fixed sand ring into a blast hole excavated in the tunnel, adjusting an angle of the support foot to support the protective plate, and thereby to support the detonator in the blast hole, thereafter blasting the detonator in the blast hole for tunnel construction.

9. The coal uncovering construction method for blasting the tunnel as claimed in claim 8, wherein the assembly further comprises: a plurality of explosion-proof housings, disposed in the plurality of extrusion rods, respectively; wherein a bottom end of each of the plurality of explosion-proof housings defines a liquid discharging hole, and each of the plurality of extrusion rods and the plurality of adhesive plates is provided with a through hole matched with the liquid discharging hole; a plurality of energizing magnets, disposed in the plurality of explosion-proof housings, respectively; a plurality of counterweight blocks, disposed on sides of the plurality of energizing magnets facing towards the plurality of adhesive plates, respectively; a plurality of follow-up magnets, disposed in the plurality of counterweight blocks, respectively; wherein a magnetic property of the plurality of energizing magnets after being energized is same as a magnetic property of the plurality of follow-up magnets; a plurality of knocking needles, disposed on sides of the plurality of counterweight blocks facing away from the plurality of energizing magnets, respectively; and a plurality of glass housings, disposed at sides of the plurality of knocking needles facing away from the plurality of energizing magnets, respectively; wherein the coal uncovering construction method further comprises: energizing the plurality of energizing magnets to exert repulsive forces on the plurality of follow-up magnets when the detonator fails to blast, thereby to drive the plurality of counterweight blocks to move with the plurality of knocking needles until the plurality of knocking needles collide with the plurality of glass housings and break down the plurality of glass housings to discharge corrosive liquid loaded within the plurality of glass housings onto the outer surface of the detonator through the liquid discharging holes and the through holes, thereby to corrode the detonator.

10. The coal uncovering construction method for blasting the tunnel as claimed in claim 9, wherein the assembly further comprises: a hollow column filled with colored smoke, disposed on a side of each of the plurality of explosion-proof housings facing away from the corresponding adhesive plate; wherein the hollow column defines a plurality of exhaust vents; a counterweight ball, disposed in each of the plurality of exhaust vents; a plurality of puncture needles, disposed on an outer surface of each counterweight ball; a supporting elastic rod, fixed between the counterweight ball and the hollow column; elastic films, disposed on two sides of the counterweight ball; wherein each extrusion rod defines a plurality of through holes matched with the plurality of exhaust vents, respectively; and wherein the coal uncovering construction method further comprises: driving the counterweight ball to shake the supporting elastic rod under an impact force generated by blasting the detonator, thereby driving the plurality of puncture needles to pierce the elastic films, and escaping the colored smoke stored inside the hollow column after the elastic films are pierced.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) The disclosure will be further described below with reference to the attached drawings.

(2) FIG. 1 illustrates a flowchart of a coal uncovering construction method for blasting large cross-section gas tunnels according to the disclosure.

(3) FIG. 2 illustrates a structural schematic stereogram of an extension ring according to the disclosure.

(4) FIG. 3 illustrates a schematic section diagram of the extension ring of the disclosure.

(5) FIG. 4 illustrates a partial enlarged schematic diagram of an A portion in FIG. 3 according to the disclosure.

(6) FIG. 5 illustrates a partial enlarged schematic diagram of a B portion in FIG. 4 according to the disclosure.

(7) FIG. 6 illustrates a partial enlarged schematic diagram of a C portion in FIG. 4 according to the disclosure.

(8) FIG. 7 illustrates a partial enlarged schematic diagram of a D portion in FIG. 4 according to the disclosure.

(9) FIG. 8 illustrates a structural schematic diagram of an adhesive plate according to a second embodiment of the disclosure.

(10) FIG. 9 illustrates a structural schematic diagram of an assembly relationship among a tunnel, a blast hole, and a detonator according to the disclosure.

(11) In addition, please amend the paragraph [0028] of the specification as originally filed as follows.

DESCRIPTION OF REFERENCE NUMERALS

(12) 1fixed sand ring; 2extension ring; 3adjustable protective plate; 4support foot; 5extrusion rod; 6adhesive plate; 7sponge mat; 8arc-shaped block; 9support elastic piece; 10explosion-proof housing; 11energizing magnet; 12counterweight block; 13follow-up magnet; 14knocking needle; 15elastic piece; 16limiting frame; 17rubber ring; 18glass housing; 19buffer sponge; 20telescopic needle; 21magnetic closing block; 22telescopic rod; 23hollow column; 24counterweight ball; 25puncture needle; 26supporting elastic rod; 27elastic film; 28stirring ball; 29connecting elastic rope; 30jacking rod; 31powder storage bag; 32powder discharging pipe; 33exhaust vent; 34liquid discharging hole; 35through hole; 36through hole; 37through hole; 38detonator; 39blast hole; 40tunnel.

DETAILED DESCRIPTION OF EMBODIMENTS

(13) In order to enable the technical solution, technical features, objectives and effects achieved by the disclosure to be easily understood, the disclosure is further described below in conjunction with illustrated embodiments.

Embodiment 1

(14) As shown in FIG. 1, a coal uncovering construction method for blasting large cross-section gas tunnels according to an embodiment of the disclosure includes the following steps: Step 1, stress distribution characteristics in front of a tunnel boring working face are analyzed, and then a thickness calculation model of a reserved rock wall is determined based on a limit equilibrium theory. Step 2, a tunnel model is established, a construction condition is simulated and a construction result is analyzed based on the tunnel model, thus a thickness of the reserved rock wall is determined according to the thickness calculation model of the reserved rock wall and the tunnel model. Step 3, a detonator is fixed through a fixed sand ring 1, the detonator is fitted with a construction hole by adjusting an adjustable protective plate 3, then the detonator is embedded into a blast hole, and the detonator is blasted for tunnel construction. In the coal uncovering construction method for blasting large cross-section gas tunnels, the thickness calculation model of the reserved rock wall for uncovering coal in a gas outburst working area is established, and a stress state of a unit body in a limit equilibrium zone of the model is analyzed, thus a formula for calculating a critical rock wall size is derived to determine the thickness of the reserved rock wall, an effect of effectively shortening a construction period for penetrating coal measure strata can be achieved while tunnel boring safety can be ensured.

(15) As shown in FIG. 2 to FIG. 4, an extension ring 2 is fixed between the fixed sand ring 1 and the adjusting protective plate 3, a bottom of the adjustable protective plate 3 is rotatably connected with a support foot 4, a shape of an end of the support foot 4 facing away from the adjustable protective plate 3 is sharp, an inner side of the fixed sand ring 1 is connected with a plurality of extrusion rods 5, the plurality of extrusion rods 5 are distributed in an array, an end of each of the plurality of extrusion rods 5 facing towards a center of the fixed sand ring 1 is fixedly connected to an adhesive plate 6 (i.e., a plurality of adhesive plates, each of which is corresponding to the extrusion rod), and a side of the adhesive plate 6 facing away from the extrusion rod 5 is fixedly connected to a sponge mat 7. In the coal uncovering construction method for blasting large cross-section gas tunnels, after determining the thickness of the reserved rock wall and then using the detonator for exploding, a worker needs to first place the detonator into the fixed sand ring 1, and then push the plurality of extrusion rods 5 to drive a plurality of corresponding adhesive plates 6 to move (i.e., each extrusion rod is attached to a corresponding adhesive plate) until the plurality of adhesive plates 6 are attached to an outer surface of the detonator, thereby realizing a fixation of the detonator. At this time, the detonator is embedded into the blast hole excavated in advance, an angle of the support foot 4 is adjusted to support the adjustable protective plate 3, thereby to support the detonator, ensuring that the detonator will not deviate after being embedded, thereby effectively ensuring the construction quality.

(16) As shown in FIG. 4, an outer surface of each extrusion rod 5 is provided with a plurality of arc-shaped blocks 8, exteriors of the plurality of arc-shaped blocks 8 are slidably connected with a plurality of support elastic pieces 9, the plurality of support elastic pieces 9 are connected with the fixed sand ring 1 and are distributed in an array inside the fixed sand ring 1, and the plurality of arc-shaped blocks 8 and the plurality of support elastic pieces 9 are arc-shaped and each of the plurality of arc-shaped blocks 8 is matched with a corresponding one of the plurality of support elastic pieces 9. In the coal uncovering construction method for blasting large cross-section gas tunnels, the plurality of arc-shaped blocks 8 are driven to slide by pushing and extruding the plurality of extrusion rods 5 during installing the plurality of extrusion rods 5; the plurality of arc-shaped blocks 8 are in contact with the plurality of support elastic pieces 9 during the sliding, thereby pushing the plurality of support elastic pieces 9 to bend and deform until the plurality of arc-shaped blocks 8 completely slides over all of the plurality of support elastic pieces 9, and after then, the plurality of support elastic pieces 9 reset, thereby limiting the plurality of arc-shaped blocks 8, preventing the plurality of arc-shaped blocks 8 from being reset. Therefore, after the above operation, the plurality of arc-shaped blocks 8 can be effectively limited, and then the plurality of extrusion rods 5 and the corresponding adhesive plates 6 are limited, thereby preventing the detonator from sliding out from the inner side of the fixed sand ring 1 after the installation of the detonator.

(17) As shown in FIG. 4 to FIG. 5, the extrusion rod 5 is provided with an explosion-proof housing 10 therein, the explosion-proof housing 10 is provided with an energizing magnet 11, a side of the energizing magnet 11 facing towards the adhesive plate 6 is provided with a counterweight block 12, the counterweight block 12 is provided with a follow-up magnet 13 therein; when the energizing magnet 11 is energized, a magnetic property of the energizing magnet 11 is the same as that of the follow-up magnet 13, a side of the counterweight block 12 facing away from the energizing magnet 11 is provided with a knocking needle 14, a side of the knocking needle 14 facing away from the energizing magnet 11 is provided with a glass housing 18, a bottom end of the explosion-proof housing 10 defines a liquid discharging hole 34, and the corresponding extrusion rod 5 and the corresponding adhesive plate 6 are respectively provided with through holes (i.e., 35 and 36) matched with the liquid discharge hole 34. In the coal uncovering construction method for blasting large cross-section gas tunnels, under normal circumstances, the detonator will explode to detonate the rock and soil; however, some of the detonators will not explode due to internal faults, and these detonators are referred to as misfired detonators. Once the misfired detonators appear, it needs to be carefully treated, taking the worker's safety prominent. When some misfired detonators cannot be used again, it requires safely dismantling and destruction. At this time, the worker can remotely start up a switch signal of the energizing magnet 11, causing the energizing magnet 11 to operate with electricity, thereby exerting repulsive force on the follow-up magnet 13, and then the counterweight block 12 drives the knocking needle 14 to move under the repulsive force until the knocking needle 14 collides with the glass housing 18, thereafter breaking down the glass housing 18, so that corrosive liquid loaded within the glass housing 18 can leak, the leaked corrosive liquid drips onto the outer surface of the detonator through the liquid discharging hole 34, the through hole 35 disposed on a bottom end of the extrusion rod 5, and the through hole 36 disposed on the adhesive plate 6, so that the detonator is corroded until gunpowder inside the detonator is soaked, thereby making the detonator thoroughly invalid. It should be noted that the entire corrosion process takes different time depending on the concentration of the corrosive liquid. The worker can only return to recycle the detonator in half an hour after the corrosion operation is completed, thereby making it convenient to automatically destroy the misfired detonators while ensuring the worker's safety.

(18) As shown in FIG. 5, an exterior of the counterweight block 12 is slidably connected with a limiting frame 16, the limiting frame 16 is provided with elastic pieces 15 therein disposed on two sides of the counterweight block 12, and the elastic pieces 15 are configured to support the counterweight block 12. In the coal uncovering construction method for blasting large cross-section gas tunnels, after the detonator explodes normally, the fixed sand ring 1 will be decomposed by an impact force of the explosion, and the plurality of extrusion rods 5 will also break down under the action of the explosion. At this time, the explosion-proof housing 10 will protect its internal structure from a damage caused by the impact force of the explosion; the elastic pieces 15 support and limit the counterweight block 12 to prevent it from colliding the glass housing 18 during the explosion of the detonator. It should be noted that the repulsive force generated after starting up the energizing magnet 11 should be sufficient to drive the counterweight block 12 to deform the elastic pieces 15 by pushing them, thereby achieving an effect of cyclic using the explosion-proof housing 10.

(19) As shown in FIG. 4 to FIG. 5, an end of the limiting frame 16 facing away from the energizing magnet 11 is provided with a rubber ring 17, and a buffer sponge 19 is disposed between an exterior of the glass housing 18 and the explosion-proof housing 10. In the coal uncovering construction method for blasting large cross-section gas tunnels, the rubber ring 17 and the buffer sponge 19 can achieve spacing protection of the glass housing 18 in the process of the explosion-proof housing 10 rolling after the explosion of the detonator, thereby preventing the glass housing 18 from being broken down or being in contact with the knocking needle 14.

(20) As shown in FIG. 6, a side of the liquid discharge hole 34 facing away from the buffer sponge 19 is slidably connected with a magnetic closing block 21, a plurality of telescopic rods 22 are fixed between the magnetic closing block 21 and the explosion-proof housing 10, and a side of the magnetic closing block 21 facing towards the buffer sponge 19 is provided with a telescopic needle 20. In the coal uncovering construction method for blasting large cross-section gas tunnels, after the counterweight block 12 drives the knocking needle 14 to break down the glass housing 18, the counterweight block 12 will sink to the bottom of the glass housing 18. During the above process, the magnetic force of the follow-up magnet 13 will act on the magnetic closing block 21, thereby driving the magnetic closing block 21 to compress the plurality of telescopic rods 22 and then push the telescopic needle 20 to move. It should be noted that the telescopic needle 20 is of telescopic type, and the telescopic needle 20 will also protrude and come into contact with the glass housing 18 under the action of the magnetic force, piercing the glass housing 18 and causing the glass housing 18 to break down, further ensuring the corrosive liquid flow normally during the destruction of the misfired detonators and improving the stability of misfire detonator destruction. It also should be noted that under normal conditions, the telescopic needle 20 will not come into contact with the glass housing 18 when the magnetic closing block 21 fully compresses the plurality of telescopic rods 22.

(21) As shown in FIG. 7, a side of the explosion-proof housing 10 facing away from the corresponding adhesive plate 6 is inserted with a hollow column 23, the hollow column 23 is filled with a large amount of colored smoke and defines a plurality of exhaust vents 33, each of the plurality of exhaust vents 33 is provided with a counterweight ball 24 therein, an outer surface of the counterweight ball 24 is provided with a plurality of puncture needles 25, a supporting elastic rod 26 is fixed between the counterweight ball 24 and the hollow column 23, two sides of the counterweight ball 24 are provided with elastic films 27, and the corresponding extrusion rod 5 defines a plurality of through holes 37, which are matched with the plurality of exhaust vents 33. In the coal uncovering construction method for blasting large cross-section gas tunnels, structural components inside the explosion-proof housing 10 are mostly intact and reusable due to the protection of the explosion-proof housing 10. Furthermore, during the explosion of the detonator, the impact force generated will cause the counterweight ball 24 to drive the supporting elastic rod 26 to shake back and forth, thereby driving the plurality of puncture needles 25 to pierce the elastic films 27 caused by the shaking process of the counterweight ball 24, and then the colored smoke stored inside the hollow column 23 will escape after the elastic films 27 are pierced, which can effectively position the explosion-proof housing 10 and is convenient for recycling the explosion-proof housing 10 after the explosion, and then reducing searching time for the worker.

(22) As shown in FIG. 7, the hollow column 23 is provided with a plurality of stirring balls 28 therein, and each of the plurality of stirring balls 28 is connected to the hollow column 23 through a connecting elastic rope 29. While constructing the tunnel, after the detonator explodes, each of the plurality of stirring balls 28 inside the hollow column 23 will pull the corresponding connecting elastic rope 29 to bounce back and forth under an action of inertia force, thereby stirring the colored smoke inside the hollow column 23 and preventing a precipitation of colored particles containing in the colored smoke from causing difficulties for the worker to find the explosion-proof housing 10.

Embodiment 2

(23) As shown in FIG. 8, compared with the embodiment 1, another implementation mode of the disclosure is as follows: the adhesive plate 6 is slidably connected with a pair of jacking rods 30 therein, a side of each of the pair of jacking rods 30 facing away from the sponge mat 7 is provided with a powder storage bag 31, and a side of the powder storage bag 31 facing away from a center of the adhesive plate 6 is connected with a powder discharging pipe 32 in a penetrating manner. While constructing the tunnel, during the installation of the detonator, the adhesive plate 6 will drive the sponge mat 7 to gradually fit with the outer surface of the detonator. In the above process, the pair of jacking rods 30 will slide under an action of the outer surface of the detonator, thereafter to push and squeeze the powder storage bags 31 corresponding to the pair of jacking rods 30, and then to push and squeeze to spray dry powder inside the powder storage bags 31. The sprayed dry powder drips onto the outer surface of the detonator to keep the detonator's outer surface dry, thereby preventing a damp environment in the rock and soil from affecting the explosion of the detonator.

(24) A working principle of the method is as follows: establishing the reserved rock wall model for uncovering coal in the gas outburst working area, and analyzing the stress state of the unit body in the limit equilibrium zone of the model, thereby to derive the formula for calculating the critical rock wall size to determine the thickness of the reserved rock wall, so that the thickness of the reserved rock wall is accurately determined, and the effect of effectively shortening the construction period for penetrating the coal measure strata while ensuring the tunnel boring safety.

(25) When the thickness of the reserved rock wall is determined and the detonator is used for blasting, the worker needs to put the detonator into the fixed sand ring 1 first, and then push the plurality of extrusion rods 5 to drive the corresponding plurality of adhesive plates 6 to move until the plurality of adhesive plates 6 fit with the outer surface of the detonator, and then the detonator is fixed. At this time, the detonator is embedded into the blast hole excavated in advance, and the angle of the support foot 4 is adjusted to support the adjustable protective plate 3, thereby to support the detonator to ensure that the detonator does not deviate after being embedded, effectively ensuring the construction quality.

(26) During the installation of the plurality of extrusion rods 5, the plurality of arc-shaped blocks 8 are driven to slide by pushing the plurality of extrusion rods 5. During the sliding process, the plurality of arc-shaped blocks 8 come into contact with the plurality of support elastic pieces 9, thereby pushing the plurality of support elastic pieces 9 to bend and deform until the plurality of arc-shaped blocks 8 completely slides over the plurality of support elastic pieces 9. When the plurality of arc-shaped blocks 8 slides over all of the plurality of support elastic pieces 9, the plurality of support elastic pieces 9 will reset, and then the plurality of arc-shaped blocks 8 are limited and the plurality of arc-shaped blocks 8 are prevented from resetting. Therefore, in this way, the plurality of arc-shaped blocks 8 can be effectively limited, thereby limiting the plurality of extrusion rods 5 and the corresponding adhesive plates 6, preventing the situation where the detonator slides out from the inner side of the fixed sand ring 1 after the detonator installation.

(27) Under normal circumstances, the detonator can explode, causing the rock and soil to blast. However, some detonators may fail to explode due to internal faults, which can be called misfired detonators. Once the misfired detonators appear, caution should be taken and the safety of the worker should be the first priority. Some misfired detonators cannot be used again and need to be safely removed and destructed. At this time, the worker can remotely activate the switch signal of the energizing magnet 11 to enable it to operate, and then a repulsive force is applied to the follow-up magnet 13. At this time, the counterweight block 12 will push the knocking needle 14 to move under the repulsive force until the knocking needle 14 collides with the glass housing 18. When the knocking needle 14 collides with the glass housing 18, the glass housing 18 breaks down and the corrosion liquid stored inside leaks. The leaked corrosion liquid will drip onto the outer surface of the detonator through the liquid discharging hole 34, the through hole 35 of the extrusion rod 5, and the through hole 36 of the adhesive plate 6, and the through hole 35 of the extrusion rod 5 and the through hole 36 of the adhesive plate 6 are matched with the liquid discharge hole 34. Therefore, the detonator is corroded until the internal gunpowder is soaked, causing the inside gunpowder to completely fail. It should be noted that the entire corrosion process requires different time depending on the concentration of the corrosion liquid. The worker can only go to recycle and process the detonator within half an hour after the completion of the corrosion operation, so that the misfired detonators can be automatically destructed to protect the worker's safety.

(28) After the detonator explodes normally, the fixed sand ring 1 will be decomposed by the impact force of the explosion, and the extrusion rods 5 also break down under the action of the explosion. At this time, the explosion-proof housing 10 can protect its internal structure from the damage caused by the impact force of the explosion. At this time, the elastic pieces 15 can support and limit the counterweight block 12 to prevent the counterweight block 12 from colliding with the glass housing 18 during the detonator explosion process. It should be noted that the repulsive force generated after the activation of the energizing magnet 11 should be sufficient to drive the counterweight block 12 to push the elastic pieces 15 to deform, thus achieving the effect of cyclic use. Furthermore, the design of the rubber ring 17 and the buffer sponge 19 can protect and limit the glass housing 18 during the rolling process of the explosion-proof housing 10 after detonator explosion, preventing the glass housing 18 from breaking down or coming into contact with the knocking needle 14.

(29) After the counterweight block 12 drives the knocking needle 14 to break down the glass housing 18, it will sink to the bottom of the glass housing 18. During this process, the magnetic force of the follow-up magnet 13 can act on the magnetic closing block 21, which drives the magnetic closing block 21 to compress the telescopic rods 22 and push the telescopic needle 20 to move. It should be noted that the telescopic needle 20 is telescopic, so that at the same time, the telescopic needle 20 can also extend out and come into contact with the glass housing 18 under the action of the magnetic force, and then the glass housing 18 is punctured to break down, further ensuring the normal flow of the corrosive liquid during the misfired detonators destruction, and improving the stability of the misfired detonators destruction. It should be noted that under normal conditions, the magnetic closing block 21 fully compresses the telescopic rods 22, and the telescopic needle 20 cannot come into contact with the glass housing 18.

(30) After the normal explosion of the detonator, the structural components inside the explosion-proof housing 10 are mostly intact and reusable due to the protection of the explosion-proof housing 10. During the explosion of the detonator, the impact force generated can cause the counterweight balls 24 to drive the corresponding supporting elastic rods 26 to shake back and forth. During the shaking process of the counterweight balls 24, each of the counterweight balls 24 can drive the corresponding plurality of puncture needles 25 to pierce the elastic films 27 disposed on the two sides of the counterweight ball 24. After the elastic films 27 are pierced, the colored smoke stored inside the hollow column 23 escapes, and then the position of the explosion-proof housing 10 can be positioned to facilitate the recycling and utilization after the explosion, reducing the search time for the worker. After the detonator explodes, the plurality of stirring balls 28 inside the hollow column 23 can pull the connecting elastic ropes 29 corresponding to the plurality of stirring balls 28 to bounce back and forth under the action of inertia force, thereby stirring the colored smoke inside the hollow column 23 and preventing the precipitation of colored particles containing in the smoke from causing difficulties for the worker to find.

(31) During the installation of the detonator, the plurality of adhesive plates 6 can drive the corresponding plurality of sponge mats 7 to gradually fit with the outer surface of the detonator. During this process, the jacking rods 30 can slide under the action of the outer surface of the detonator, pushing and squeezing to spray the dry powder inside the powder storage bags 31. The sprayed dry powder can drip onto the outer surface of the detonator, keeping its surface dry and preventing the damp environment in the rock and soil from affecting the detonation of the detonator.

(32) The foregoing terms of front, back, left, right, upper, and lower all refer to FIG. 1 in the attached drawings of the specification, which is determined according to observer's observation angle. Furthermore, the device facing the observer's side is determined as a standard, and the left side of the observer is determined as the left, and so on.

(33) In the description of the disclosure, it should be understood that the orientation or positional relationship indicated by the terms center, longitudinal, transverse, front, rear, left, right, vertical, horizontal, top, bottom, outer, etc. is based on the orientation or positional relationship shown in the attached drawings, rather than indicating or implying that the indicated device or element must have a particular orientation, and is constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the scope of the protection of the disclosure.

(34) The basic principles, main technical features, and advantages of the disclosure are shown and described above. It should be understood by those skilled in the related art that the disclosure is not limited by the foregoing embodiments, and the foregoing embodiments and the specification of the disclosure are merely used to illustrate the principles of the disclosure, and various changes and improvements may be made in the disclosure without departing from the spirit and scope of the disclosure, and these changes and improvements fall within the scope of the protection of the disclosure. The scope of the protection of the disclosure is defined by the written content of the disclosure and their equivalents.