End point closing wall forming device of extrusion type underground diaphragm wall and method for operating same

Abstract

An end point closing wall forming device of an extrusion type underground diaphragm wall comprises a main body (1) and a vibration water spraying device. The vibration water spraying device is fixedly disposed inside the main body (1). The end point closing wall forming device of an extrusion type underground diaphragm wall further comprises a separation device. The separation device is movably sheathed on the outer side of a short edge (11) of the main body (1). Also provided is a method for operating an end point closing wall forming device of an extrusion type underground diaphragm wall.

Claims

1. An end-of-wall-closing type wall-forming device for a press-fit underground continuous wall, comprising: a main body (1), a vibration water spraying device that is fixedly arranged inside the main body (1), and a separation device that is movably sleeved outside a first (short) side (11) of the main body (1), wherein the main body (1) comprises an inner cavity (2), an outer wall body (3), a small external wall body, and a double-flap valve (4), and wherein the inner cavity (2) is an integral hollow rectangular cavity, wherein the outer wall body (3) is formed by two pieces, each having a 7 shape, arranged along long sides (12) of the inner cavity (2), wherein heads of the 7 shapes form, at a center of a first side (11) of the inner cavity (2) a concave dovetail slot (7); wherein the concave dovetail slot (7) fits a convex dovetail rail (7) on an adjacent automatic wall forming device (46); a long outer wall body (3) is formed at a joint (8) by a reinforcing plate (9), which is fixed by bolts (35) at distance from the joint (8) between the upper inner cavity (2) and the inner cavity (2); a sealing groove (8) is provided on one side of the joint (8), at a center of a short side wall (11), two small external small bodies (3) form a vertical concave dovetail groove (17), in which are provided with a protruding shoulder (6), which has a sloped upper surface and a flat bottom surface; the double-flap valve (4) is arranged at a bottom of the main body (1); a lower end of the main body (1) having the double-flap valve (4) is called a base section (10); a section of the main body (1) without the double-flap valve (4) and abutting the base section (10) is called an auxiliary section (10), the double-flap valve (4) is divided into two halves at a center of the long side (12) of the inner cavity (2), wherein each of the two halves is provided with a shaft pin hole (13) at a bottom end, and each of the shaft pin holes (13) align with a shaft pin hole (13 ) arranged at a bottom of short sides (11) and (11) of the inner (2) to form a coaxial shaft pin hole, which accommodates a shaft pin (14) to form a hinge connection.

2. An end-of-wall-closing type wall-forming device according to claim 1, wherein the separation device comprises a separating rail (5), a pawl (18) and a wing (19), wherein the separating rail (5) comprises a large convex dovetail track (21) fit in a female dovetail groove (20) of an automatic wall forming device (46), and a small convex dovetail track (21) fit in a small concave dovetail groove (17) on the small outer wall body (3) from a top of the main body (1), wherein at a joint between the large convex dovetail track (21) and the small convex dovetail track (21) are provided with wings (19) on both sides, wherein the wings (19) are fixed, using plastic rivets (22), on outside of the small external wall body (3), wherein shaped flaps (19) cover gaps between the small external wall body (3) and the wings (19), a protective cover (44) is arranged at a bottom of the separation rail (5) and the small external wall body (3) and is fixed with the plastic rivet (22); wherein the pawl (18) and a pawl chamber (24) are horizontally arranged inside the separation rail (5) at a location vertically corresponding to a position of the protruding shoulder (6), and the pawl (18) has a slanted lower side and a flat upper side such that it is in a shape of a door lock plunger, wherein a diameter of a back shoulder (23) of the pawl (18) is larger than a diameter of a pawl shaft (23), and wherein one end of a supporting spring (25) is disposed in a spring seat (26) on a rear shoulder (23) and a second end of the support spring (25) is in a second spring seat (26) on a guide shaft (27) located at corresponding to an inner wall (24) of the pawl chamber (24), wherein the slanted lower side of the pawl (18) matches the upper slanted side of the protruding shoulder (6).

3. The end-of-wall-closing type wall-forming device of claim 1, wherein the vibration water spraying device comprises a water inlet pipe (28), a water outlet pipe (28), a circulating water pipe (29), a cable duct (30), an air duct (31), a cooling water pipe (31) an electric vibrator (32) or a gas source vibrator (32), a vibration chamber (33), a water spray valve (34), and a pipe body, a top end of which is vertically arranged along an outer wall of the long side (12) of the inner cavity (2); wherein a dome (42) is arranged inside the outer wall body (3), and a pipeline passes through the dome into the vibration chamber (33) and is fixed on the outer wall of the inner cavity (2); wherein a water spray valve (34) is installed on the vibration wall (36), an outlet (37) of the water spray valve (34) faces outside of the vibration wall (36) and the water spray valve (34) is in communication with the circulating water pipe; wherein a vibration wall (36) is vertically arranged on a concave shoulder (40) of upper and lower outer wall parts (3) and is horizontally arranged on a vibration frame (41) to form the vibration chamber (33); wherein the electric vibrator (32) or the air source vibrator (32) is installed inside the vibrating wall (36); wherein the vibration chamber (33) at a bottom of the base section (10) and the vibration chamber (33) at a top of the auxiliary section (10) are provided with a circulating water pipe (29) that is in series with a cooling water pipe (31); and wherein the water inlet pipe (28) and the water outlet pipe (28) are connected to a water tank on a static pile.

4. The end-of-wall-closing type wall-forming device of claim 1, wherein the double-flap valve (4) has a triangular shape in an elevation view.

5. The end-of-wall-closing type wall-forming device of claim 1, wherein the double-flap valve (4) comprises two flat plates.

6. A method for closing end-of-wall for a press-fit underground continuous wall, comprising: Step 1: according to a design of depth and thickness of a diaphragm wall, selecting and assembling an appropriate base section (10) and an auxiliary section (10), wherein a vertical total length, which is limited by a design elevation construction process conditions, is varied by using auxiliary sections (10) of different lengths, wherein when the base section (10) and the auxiliary section (10) are connected, joints (8) are aligned to prevent water seepage, and threaded holes (35) arranged vertically on an outer wall (3) are also aligned, wherein bolts (35) are used to secure the joints, and a protective cover (44) is fastened with plastic rivets (22) at bottom ends of a separation rail (5) and a small external wall body (3) to prevent muddy water from entering; Step 2: when a main body (1) is fixed, sliding a small dovetail track (21) on the separation rail (5), from a top of the main body (1), into a small concave dovetail groove (17) so that a pawl (18) touches a protruding shoulder (6), thereby a lower bevel of the pawl (18) slides over an upper bevel of the protruding shoulder (6) in the small concave dovetail groove (17) on a short side (11) of an inner cavity (2), forcing the pawl (18) to convert a vertical movement energy through bevel mechanics to urge a pawl shaft (23) to move a pawl back shoulder (23) to press a supporting spring (25) horizontally along a guide shaft (27) so that the pawl (18) is pushed to retract into a pawl chamber (24), such that the small dovetail track (21) can pass over the protruding shoulder (6) to a predetermined position at a bottom of the base section (10); when a separation device is stuck with concrete and not moving, lifting the main body (1) up, thereby the upper bevel of the protruding shoulder (6) collides with the lower bevel of the pawl (18), and the pawl (18) is pushed to retract into the pawl chamber (24) such that the protruding shoulder (6) passes over the pawl (18), and the main body (1) can continue to ascend until it is pulled out of the ground; pushing the main body (1) and the separation device into ground, thereby a flat lower surface of the protruding shoulder (6) bumps against an upper flat surface of the pawl (18), wherein the small dovetail (21) is limited to a vertical movement due to confine of the small concave dovetail groove (17), thereby the protruding shoulder (6) drives the pawl (18) to drive and, therefore, the separation device down until it arrives at a predetermined underground place; Step 3: pushing an end-of-wall-closing wall-forming device (45) into ground along an axis of an underground diaphragm wall, sliding the dovetail groove (7) on a first automatic wall-forming device (46) on a dovetail track (21) on the end-of-wall-closing wall-forming device (45) and pressing the first automatic wall-forming device (46) into the ground, filling it with concrete, and then using a static pile driver to insert a dovetail groove (7) on a second automatic wall-forming device (46) onto a dovetail track (7) on the first automatic wall-forming device (46) and pressing the second automatic wall-forming device (46) into the ground, filling it with concrete and slowly raising the first automatic wall-forming device (46), wherein a double-flap valve (4) opens under action of gravity, thereby concrete in the inner cavity (2) flows out to fill a void left by raising the main body (1) to form a first segment of an underground wall unit, wherein the separation device does not follow the first automatic wall-forming device (46) out and remains attached to the end-of-wall-closing wall-forming device (45), and wherein the concrete flowing out of the first automatic wall-forming device (46) adheres to outside of the separation rail (5) and a wing (19), wherein when construction of underground continuous wall reaches an end for enclosure, inserting a dovetail track (7) on a last automatic wall-forming device (46) into a dovetail groove (7) on the end-of-wall-closing wall-forming device (45), and pressing the last automatic wall-forming device (46) to a same depth underground to complete mechanical closure between the end-of-wall-closing wall-forming device (45) and the last automatic wall-forming device (46), filling concrete into the end-of-wall-closing wall-forming device (45) and the last automatic wall-forming device (46), starting an electric vibrator (32) or an air-powered vibrator (32) and gradually raising the end-of-wall-closing wall-forming device (45), thereby the main body (1) of the end-of-wall-closing wall-forming device (45) is pulled out and the separation rail (5), the wing (19), and the protective cover (44) are left in newly formed concrete underground continuous wall; and lifting the last automatic wall-forming device (46) while vibrating, thereby the last automatic wall forming device (46) is pulled out because no concrete has solidified, while the separation rail (5), the wing (19), and an z,21 flap (19) are left in a concrete wall section to form an impermeable structure.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 Front view of ECESD.

(2) FIG. 2 A-A section view of FIG. 1.

(3) FIG. 3 B-B section view of FIG. 1.

(4) FIG. 4 Large drawings of detached device and folded wings.

(5) FIG. 5 Large drawing of protecting shell.

(6) FIG. 6 C-C cutaway view of double door valve.

(7) FIG. 7 J-J cutaway view of side plate of double door valve.

(8) FIG. 8 Large drawing of joint in FIG. 1.

(9) FIG. 9 Right view of FIG. 1 and D-D cutaway view of valve.

(10) FIG. 10 Left view of FIG. 1.

(11) FIG. 11 Large drawing of the latch strike.

(12) FIG. 12 Sketch of plate valve at the bottom.

(13) FIG. 13 Sketch of open of FIG. 12.

(14) FIG. 14 Sketch of multiple socket shapes.

(15) FIG. 15 Schematic of using steps.

(16) In Figure: 1 main body; 2 inner chamber; 3 outer wall; 3 litter outer wall; 3 long outer wall; 4 double door valve; 4 side plate of valve; 5 separation track; 6 boss; 7 female dovetail; 7.sup.1 T-shape slot; 7.sup.2 circle slot; 7.sup.3 diamond slot; 7.sup.4 bevel-slot; 7.sup.5 elliptical slot; 7 male dovetail; 8 butt-lap joint; 8 seal slot; 9 strengthen plate; 10 basic segment; 10 auxiliary segment; 11 short side; 11 short side; 12 long side; 12 long side; 13 axle pin hole; 13 axle pin hole; 14 axle pin; 15 magnetic part; 16 plate valve; 16 sealing beam; 17 little female dovetail slot; 18 latch strike; 19 plane protecting wing; 19 L-shape folded-wing; 20 female dovetail slot; 21 big dovetail; 21 little dovetail; 22 plastic rivet; 23 back part; 23 latch strike hole; 24 strike chamber; 24 inner wall; 25 support spring; 26 spring seat; 27 guide axis; 28 inlet pipe; 28 outlet pipe; 29 circulating water pipe; 30 cable pipe; 31 air pipe; 31 cooling water pipe; 32 electric vibrator; 32 air vibrator; 32 clip; 33 vibrating chamber; 34 spray valve; 35 screw bolt; 35 shen head bolt; 35 threaded hole; 36 vibrating wall; 37 water hole; 38 ball valve; 39 pressure limiting spring; 40 concave shoulder; 41 frame; 42 dome arch; 43 flange; 44 protecting shell; 45 wall closure device; 46 diaphragm wall forming equipment; 46 second diaphragm wall forming equipment; 46 the last diaphragm wall forming equipment.

DETAILED DESCRIPTION

(17) Embodiments of the invention will be further illustrated with the aid of the attached drawings.

EXAMPLE 1

(18) As shown in FIG. 1, which is an elevation view of a wall closure device, a device of the invention includes a main body 1, a separation device, and a vibration water-spray device. The vibration water-spray device is set within the main body 1 and is fixed with the main body 1. A device of the invention also includes a separation device, which is disposed on the outside of the main body 1 and is moveably attached to the main body 1.

(19) As shown in FIGS. 2, 3, and 4, the main body 1 of a device of the invention includes an inner chamber 2, an outer wall body 3, a small outer wall 3, and a double valve 4. The inner chamber 2 may be a rectangular body with a hollow cavity, having the following dimensions: the long side 12 has an inner dimension of 300-1100 mm and an outside dimension of 400-1200 mm; the short side 11 and 11 have an inner dimension of 200-1000 mm and an outer dimension of 300-1100 mm. Along the short side 11 of the inner chamber 2 there is a dovetail-shaped trough 17, the center of which is provided with a protrusion shoulder 6 at regular intervals. The protrusion shoulder 6 has a slant top and a flat bottom.

(20) It should be noted that the shape of the inner chamber 2 can be varied. For example, the inner chamber 2 may be round or oval shaped, etc. If the inner chamber 2 has a round profile, then the inner side of the outer wall 3 shall have a corresponding arc shape to match the outer profile of the inner chamber 2, but outside profile of the outer wall 3 can still be a rectangular shape.

(21) As shown in FIG. 2 and FIG. 3, the outer wall 3 cross section comprises two 7-shaped (or L-shaped) pieces placed along the long sides 12 of the inner chamber 2. The two L head (short branch of the L) are disposed on the short side 11 of the inner chamber 2 to form a dovetail-shaped trough 7. The dovetail trough 7 will mate with the dovetail-shaped protrusion track 7 on a neighboring automatic wall-forming device 46. After mating of the dovetail trough 7 and dovetail track 7, the automatic wall-forming device 46 and the wall-forming closure device 45 can only slide along the track and cannot separate from each other or move in radial direction. Two outer wall body 3 are fixed, using bolts 35 or welding, on the short side 11 of the inner chamber 2 such that they form a dovetail-shaped trough at the center of the short side 11. As shown in FIG. 1, near the joint 8 between the upper and lower inner chamber 2, the outer wall body 3 is larger and a reinforcement plate 9 is added. Specifically, the outer wall body 3 is increased in size such that it spans the joint 8, half above and half below, at the two sections of the inner chambers 2. The outer wall body 3 is fixed with bolts 35 to achieve connection and enforcement functions.

(22) Similarly, as shown in FIG. 14, the above-described dovetail-shaped trough 7 can adopt other shapes: a T shape trough 7-1, round trough 7-2, diamond trough 7-3, hypotenuse (slant slope) trough 7-4, oval trough 7-5. The matching dovetail-shaped track 7 can correspondingly adopt various shapes. For example, if T shaped trough 7-1 is used, the two adjacent wall-forming devices 46 can only have linear axial (in the plane of the continuous wall) movement, whereas when a round trough 7-2 is used, adjacent wall-forming devices 46 not only can move in the axial direction, but also swing in an arc motion within a certain range.

EXAMPLE 2

(23) As shown in FIG. 8, on one side of the joint 8, there is a sealing trough (groove) 8 to facilitate tight-seal installation to prevent leakage.

(24) As shown in FIG. 1, the bottom section of the main body 1 with a double valve 4 is referred to as a base section 10. The lengths of the base section 10 is 50 m. The bottom section of the main body 1 without a double valve 4 is referred to as an auxiliary section 10. The lengths of the auxiliary sections 10 range between 1500 mm and 15000 mm. The lengths of the short sides 11, 11 of the main body 1 correspond to the thickness of the underground continuous wall and are designed to meet the protection structure strength and waterproof requirements. Their lengths may be in the range from 300 mm to 1300 mm.

EXAMPLE 3

(25) As shown in FIG. 1, FIG. 6, FIG. 7, and FIG. 9, the front side view of the double valve 4 is a triangle, with a valve side panel 4 that has a vertical side aligned with the inner cavity 2 vertical sidewall and a blade-shaped (sharpened on one side) top. Along the center of the long sides 12 of the inner cavity 2, the double valve is divided into two valves. As shown in FIG. 6 and FIG. 9, each valve has at least two shaft pin holes at the joint with the short sides 11, 11 of the inner chamber 2. The bottom of the short sides 11, 11 of the inner chamber 2 also has at least two shaft pinholes 13 offset from the pinholes 13 such that they can forma concentric shaft hole, through which a shaft pin 14 is inserted to achieve hinged connection. As shown in FIG. 12 and FIG. 13, the double valve 4 can also adopt other shapes, such as a plate valve 16. The valve plate valve 16 is formed with two pieces of a certain thickness of flat plate that close and meet at the center of the long side 12. The flat plates have shaft pin holes 13 along the short sides 11, 11 of the inner chamber 2. These shaft pinholes 13 corresponds to, but offset, the shaft pin holes at the bottom of the short sides such that they can form a shaft hole. The are hingedly connected as for the double valve 4. One of the flat plate has, at the center closure edge, a seal beam 16 welded thereon. The two ends of seal beam 16 can rest on the bottom of the short sides. The seal beam 16 protrudes beyond the edge such that it will flap over the other piece of flat valve when closed, resulting in enhanced sealing and strength. As shown in FIG. 12, when the inner chamber 2 is empty, two magnetic devices 15 disposed at the bottom of the inner chamber can magnetically close the plate valve 16 due to magnetic forces. When the plate valve 16 is squeezed into the ground in a closed state, it is further tighten by the counter force of soil compaction such that mud or impurities cannot enter the inner chamber 2. As shown in FIG. 13, when pulling up the main body 1, the counter forces from the soil acting on the plate valve 16 on the counter force quickly disappear. The weights of the contents (steel, concrete, or other mixtures) in the inner chamber 2 will overpower the forces of the magnetic devices 15. The plate valve 16 is pushed open by the weights, swinging open along the shaft pin 14 like a swing door. The two plate valves 16 will open to a vertical position to align with the short sides 11, 11 of the inner chamber 2. The contents of the inner chamber 2 will quickly flow out to fill the void in the soil left by the main body 1 that is being pulled up. The operation principles of the double valve 4 are the same as the plate valve 16.

EXAMPLE 4

(26) The separation device includes a separation track 5, ratchet 18 and wings 19. As shown in FIG. 2, FIG. 3, and FIG. 15, the protrusion dovetail-shaped track 21 that hingedly connects with the dovetail-shaped trough 20 on the automatic wall-forming device 46 is referred to as a large dovetail track, and the one 21 that connects with the small dovetail-shaped trough 17 is referred to as a small dovetail track. As shown in FIG. 1, the small dovetail track 21 inserts into the small dovetail trough 17, from the top of the main body 1 all the way to the bottom, forming a separation track 5 at the short side 11 of the inner chamber 2. As shown in FIG. 5, the shaped shield 44 is fixed, using plastic rivets 22, on the separation track 5 and the bottom of the dovetail trough 17 to seal the gap between the separation track 5 and the outer wall body 3 to prevent slush from entering the system to clog the system. As shown in FIG. 4, at the junction of the big dovetail 21 and small dovetail 21, there are provided flat wings 19 on both sides of the narrow part. The vertical length of the flat wings 19 is the same as the separation track 5, and the width of the flat wings 19 is the same as the thickness of the main body 1. The flat wings 19 are first installed on the separation track 5 and then are anchored on the small outer wall 3 using plastic rivets. The rivets should be sufficient to ensure that they do not fall off during press-in and would not impede the separation during pulling-up. As shown in FIG. 2, FIG. 3, and FIG. 4, foldable wings 19 are provided on both sides of the flat wings 19. The foldable wings 19 seal off the gaps between the small outer wall body 3 and the flat wings 19.

(27) As shown in FIG. 11, latch strikes 18 and strike chamber 24 are installed at the inner side of separation track 5 at a location corresponding to the protruded shoulder 6. Latch strike 18 has a slope bottom and a flat upper part, like a door latch tongue. The diameter of the back shoulder 23 of latch strike 18 has a larger diameter than the diameter of latch strike hole 23. One end of the support spring 25 is in the spring seat 26 of ratchet back shoulder 23 and the other end is in the ratchet chamber 24 at the spring seat 26, which includes a spring guide post 27. In the absence of an external force, support spring 25 pushes the ratchet spring 18 out of the latch strike chamber 24 a short distance along the guide post 27. The sloped top of the latch strikes 18 coordinates with sloped side of the protruded shoulder 6 to convert a vertical movement into a horizontal displacement to control the extension or retraction of the latch strikes 18. The above description is based on one-way movement. The following example 6 further explains this in detail.

(28) It should be pointed out that, as shown in FIG. 14, the cross-section shape of the separation track 5 can also be in other shapes, according to the need, such as a double T shape, double circular, and double diamond, double slanted sides, and double ellipsoidal (oval) form. All these forms can achieve very good effects.

EXAMPLE 5

(29) As shown in FIG. 1 and FIG. 3, a vibration water spraying device includes an inlet pipe 28, an outlet pipe 28, a water circulation pipe 29, an electric cable conduit 30, an air duct 31, a cooling water pipe 31, an electric vibrator 32 or air vibrator 32, a vibrating chamber 33, and a sprayer valve 34. All pipe lines run from the top of the main body 1 along the vertical direction of the outer wall of the long sides 12 of the inner cavity 2. As shown in FIG. 2 and FIG. 3, Outer wall 3 medial position Settings have to adapt to each line of dome arch 42, various pipe by the dome arch into the vibration within the warehouse 33, With clip 32 fixed it outside the cavity wall by bolts 35. Various pipe butt choice in vibration warehouse 33 to finish. Vertical direction along the main body of the two long sides of a row of various pipelines, but feed line 28, 28 outlet pipe in each row only one root, Cable pipe 30, Air pipe 31, Cooling water pipe 31. Based on the amount of electric vibrator 32, Air vibrator 32, vibrating chamber 33, spray valve 34 to set, If use air vibrator 32 to 30 tube into the cable duct 31, cooling water pipe 31 will be used exclusively for spray valve 34.

(30) The water hole 37 of spray valve 34 toward the vibrating wall 36 is arranged on the outer side, the water spray valve 34 and the cooling water pipe 31 connectivity; water hole 37 is arranged in the ball valve 38, usually pressure limiting spring 39 will always 38 ball valves withstand water hole 37, water cannot flow out, when meets hard soil it is difficult to squeeze into, the valve of water outlet pipe is closed 28, pipe pressure quickly increased and when the pressure over the tension of limiting spring 39, 38 ball valves to be opened, and the water through the water hole 37 outflow main body 1 surrounding soil make the strength of soil decreased, start the electric vibrator 32 or air vibrator 32, the exciting force, amplitude and triple role of infiltration under, the main body 1 crowding in and pull difficult to be solved. Electric vibrator 32 work belongs to the heat element and need a large amount of cooling water, and air vibrator 32 does not require direct supply of electricity and without cooling water, as the preferred application. vibrating chamber 33 by 36 vibrating wall equipped on the two sections of the outer wall 3 concave shoulder 40, with countersunk screw bolt with 35 fixed, transverse mounted on vibration frame 41, the same with countersunk threaded hole with 35 is formed by fixing the corresponding space; electric vibrator (32) through Omega 32 cards air vibrator 32 by flange 43 were screw bolt with 35 installed at the inner side of the wall vibration 36. Start the electric vibrator 32 or gas source Vibrator 32, namely in vibrating wall 36 produced higher excitation force and amplitude, to main body 1 of the crowding in and pull out friction and increase the vibration of concrete compacting are of great help.

EXAMPLE 6

(31) As shown in FIG. 15, a method of use of the present invention includes three process steps: assembly, unidirectional motion applications, and endpoint separation and closure.

(32) Process step one, assembly: according to the design of underground continuous wall depth and thickness, select the appropriate model of the basic segment of 10 and auxiliary segment 10 which in turn on the ground, the vertical total length by increasing or decreasing the auxiliary segment 10 meet the design elevation and construction conditions is limited. On the connection, should pay attention to in addition to the upper and lower segment of contract 8 alignment into to prevent water seepage, but also should be arranged vertically on the outer wall 3 on the threaded hole 35 alignment, wall body at this time flange 43, with bolts tightened to a very stable docking. separation track 5 shows, the protecting shell 44 plastic rivet is arranged to separation track 5 and a litter outer wall 3 bottom end, separate track 5 and a litter outer wall 3 between the gap closed to prevent slurry impurity to squeeze into the obstruction.

(33) Process step two, unidirectional motion applications: when the main body 1 does not produce displacement, the separation track 5 of the little dovetail 21 agent 1 top set into the little female dovetail slot 17 implement assembly: the big dovetail 21 only from down for a single one-way movement, and the latch strike and a convex shoulder touch. At this time, the latch strike is arranged at the lower part of the slope along the fixed in the inner cavity of the short side 11 side wall of the little female dovetail slot 17 of the center of a convex shoulder is arranged on the upper part of the slope creeping, to force the latch strike vertical movement of energy through slant mechanics principle of the latch strike hole 23 push ratchet latch strikes shoulder compression spring support along the guide axis 27 level 18 boss 6; 10 shift of basic segment, so, the latch strike 18 were forced to retreat into the strike chamber 24, little dovetail 21 through the boss 6 able to reach basic section at the bottom of the predetermined position when the separation device is concrete bonding does not produce displacement: main body 1 need to enhance the pullout formed from the bottom to the monomer unidirectional movement, convex shoulder at the upper part of the inclined plane and the lower inclined surface of the touch, due to the aforementioned bevel mechanics principle, the latch strike were forced to retreat into the strike chamber 24, the boss 6 smoothly through the latch strike, main body 1 continues upward until the pull out the ground; when the main body 1 and separating device and squeeze into the ground, both formed from down the catamaran unidirectional movement, which, fixed in the short side 11 side wall of the little female dovetail slot 17 in the center of the convex shoulder is arranged at the lower part of the flat face and the separation track 5 is arranged in the inner cavity of the installation of the latch strike 18 upper flat surface conflict, lost the slope movement conditions and due to the little female dovetail slot 17 of the separation track small dovetail 21 control. Make the little dovetail vertical 21 move up and down along the little female dovetail slot 17, the little dovetail vertical 21 only can make radial motion or independence movement out of the little female dovetail slot 17, unless the inconsistent surface of the little female dovetail slot 17 is shear failure, otherwise, The boss bottom flat face drive the latch strike 18 upper flat face and then drive the separation unit, the little dovetail vertical 21 can only be reached synchronization downward until the common underground without reservation position relative to one another or be separated.

(34) Process step three, the last separation closed: first, Squeeze the wall closure device 45 into the underground along the axis of the underground continuous wall and pause; Then pull the female dovetail 7 of the first diaphragm wall forming equipment 46 into the big dovetail 21 of the wall closure device 45 and squeeze it into the ground, filled it with concrete in time, then the static piling machine move one step along the axis of the underground continuous wall line, pull the female dovetail 7 of the second diaphragm wall forming equipment 46 into the female dovetail 7 of the first diaphragm wall forming equipment 46 and squeeze it into the ground, filled it with concrete in time. Lift the first diaphragm wall forming equipment 46 slowly, Open The double door valve 4 under the gravity. The concrete of the inner chamber 2 flow out quickly, and fill the soil space on body 1 and form the first section of the underground cell wall. Due to the unidirectional movement principle, there won't be the condition that the separation track 5 move upward followed the diaphragm wall forming equipment 46. So the separation device is attached to the wall closure device 45 as before, but the diaphragm wall forming equipment 46 outflow concrete and the concrete adhesion on the outer edge of the separation track 5 and the plane protecting wing 19 promptly, Produce sticky force after solidification. When the project where the diaphragm wall is encircled is going to finish, Pull the T-shape slot of the last diaphragm wall forming 46 into the female dovetail 7 of the back end of the wall closure device 45 and squeeze it into underground in the same depth, that is, the mechanical seal between devices of the place that the diaphragm wall is encircled is finished; Fill the first wall closure device 45 and last only the last diaphragm wall forming equipment 46 with concrete, Then turn on the electric vibrator 32 or the air vibrator 32, turn up the wall closure device 45 gradually, Due to the earliest per-fusion concrete has hardened and cement the separation track 5 and the plane protecting wing 19 that are close to the concrete, The sticky force of them is much greater than the sum the of the support spring's 25 tension add the pull of the plane protecting wing 19 and plastic rivet 22, combine with the lateral frictional resistance between the little female dovetail slot 17 and little dovetail 21. So, it meet the conditions of the main body 1 upward monomer one-way movement, The main body 1 that be the first into the wall closure 45 is pulled up, and the separation track 5, the plane protecting wing 19 and the protecting shell 44 is left in the diaphragm wall that is new formed; Then vibrate the last diaphragm wall forming equipment 46 while lift up, Because the concrete of the front and back parts of the device is not solidified, the concrete has no big sticking force, So after the last diaphragm wall forming equipment 46 was pulled out; the separation track 5, the plane protecting wing 19; and the protecting shell 19 stay in the concrete wall, and forming a good anti permeability structure.

(35) Of course, the above is only the preferred embodiment of the invention, cannot be considered for defining the invention embodiment range. Invention is not limited to, for example, persons of ordinary skill in the art in the invention of the physical limits of the average change and improvement shall be belonging to the invention of the patent covered within the scope.