METHOD FOR FILLING DEFORMABLE KARST CAVE

Abstract

The present invention relates to method for filling deformable karst cave, and the steps are: penetrating a grouting pipe into an elastic silicone tube, penetrating the grouting pipe and the elastic silicone tube into a deformable bracket, and lowering into a karst cave; sealing the elastic silicone tube, injecting silicate resin materials into the grouting pipe, and injecting steel fiber reinforced grout to implement a block stone-like structure; sealing the elastic silicone tube, separating the block stone-like structure from the elastic silicone tube to complete a block stone-like structure; lowering the elastic silicone tube and the deformable bracket, sealing the elastic silicone tube, lowering the elastic silicone tube and the deformable bracket tore construct the block stone-like structure, and completing the filling. The present invention may effectively stabilize the karst cave, ensure safe tunnel construction and stable surrounding rocks, and improve engineering construction speed.

Claims

1. A method for filling deformable karst cave, characterized in that steps of the filling method are as follows: (1) penetrating a grouting pipe into an elastic silicone tube, and then penetrating the grouting tube and the elastic silicone tube into a deformable bracket as a whole; (2) lowering the whole pipeline completed above into the karst cave along a borehole conduit; (3) a console controlling a circumferential lock apparatus by means of the pipeline, to implement that a circumferential lock close insert closely seals the elastic silicone tube to enable the bottom of the elastic silicone tube to be sealed without leakage of grout, and then lowering the elastic silicone tube and the deformable bracket by 50 cm along the grouting pipe; (4) injecting the amount of silicate resin materials into the grouting pipe under the control of a grouting device to fill the elastic silicone tube at the bottom of the borehole conduit to implement fast expansion thereof, and to ensure deformation and expansion of the deformable bracket with the expansion of the elastic silicone tube; (5) injecting steel fiber reinforced grout that is stirred evenly into the grouting pipe under the control of the grouting device to fill the elastic silicone tube at the bottom of the borehole conduit to implement a block stone like structure; (6) the console controlling the circumferential lock apparatus by means of the pipeline, to implement that the circumferential lock close insert closely seals the elastic silicone tube, and the grouting device stopping grouting at the same time; (7) the console controlling a circumferential scissor apparatus located above the circumferential lock apparatus by means of the pipeline to implement that the circumferential scissor cuts the elastic silicone tube and the deformable bracket to complete separation of the formed block stone like structure from the elastic silicone tube, thereby completing a first block stone like structure; (8) lowering the elastic silicone tube and the deformable bracket by 10 cm along the grouting pipe; (9) the console controlling the circumferential lock apparatus by means of the pipeline, to implement that the circumferential lock close insert closely seals the elastic silicone tube; (10) lowering the elastic silicone tube and the deformable bracket by 50 cm along the grouting pipe; and (11) repeating steps (4) to (7) to successively complete the block stone like structure to complete filling the deformable karst cave finally.

2. The method for filling deformable karst cave according to claim 1, wherein the deformable bracket is circular with a diameter of 40 cm after the deformable bracket is expanded, and the material thereof is steel wire.

3. The method for filling deformable karst cave according to claim 1, wherein the elastic silicone tube has an inner diameter of 25 cm and a thickness of 2 cm.

4. The method for filling deformable karst cave according to claim 1, wherein the filling material comprises silicate resin, grout, and a small amount of steel fibers.

5. The method for filling deformable karst cave according to claim 4, wherein the filling steps of the filling material are: (1) dividing the silicate resin into two groups: A and B, wherein in group A, a viscosity is 300 cp, and a density is 1500 g/cm.sup.3, and in group B, a viscosity is 135 cp, and a density is 1200 g/cm.sup.3, and injecting groups A and B into the elastic silicone tube after being mixed at a volume ratio of 1:1; and (2) injecting the steel fiber and the grout into the elastic silicone tube to complete the filling after being stirred evenly at a mass ratio of 1:10.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0027] FIG. 1 is a schematic working diagram of a technology for filling a deformable block stone like karst cave;

[0028] FIG. 2 is a schematic diagram of an inner longitudinal section of a conduit;

[0029] FIG. 3 is a schematic diagram of an inner cross section of a conduit;

[0030] FIG. 4 is a schematic diagram of expansion and contraction of a deformable bracket;

[0031] FIG. 5 is a schematic working diagram of a lock apparatus;

[0032] FIG. 6 is a schematic diagram of a circumferential scissor apparatus of a lock apparatus; and

[0033] FIG. 7 is a schematic diagram of a circumferential lock apparatus of a lock apparatus.

REFERENCE NUMERALS ARE AS FOLLOWS

[0034] 1. block stone like structure, 2. karst cave, 3. borehole conduit, 4. grouting device, 5. console, 6. deformable bracket, 7. pipeline, 8. grouting pipe, 9. elastic silicone tube, 10. circumferential scissor apparatus, 11. circumferential lock apparatus, 12. circumferential scissor, and 13. circumferential lock close insert.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The present invention is further described below with reference to specific embodiments, and the advantages and features of the present invention will be more clear with the description. However, the embodiments are merely exemplary and do not constitute any limitations to the scope of the present invention. Those skilled in the art should understand that modifications and replacements may be made to details and forms of the technical solutions of the present invention without departing from the spirit and scope of the present invention, and these modifications and replacements all fall within the protection scope of the present invention.

Embodiment 1

A Method for Filling Deformable Karst Cave

[0036] As shown in FIGS. 1 to 7, the steps are as follows: [0037] (1) penetrating a grouting pipe 8 into an elastic silicone tube 9, and then penetrating the grouting tube and the elastic silicone tube into a deformable bracket 6 as a whole; [0038] (2) lowering the whole pipeline completed above into the karst cave 2 along a borehole conduit 3; [0039] (3) a console 5 controlling a circumferential lock apparatus 11 by means of a pipeline 7, to implement that a circumferential lock close insert 13 closely seals the elastic silicone tube 9 to enable the bottom of the elastic silicone tube 9 to be sealed without leakage of grout, and then lowering the elastic silicone tube 9 and the deformable bracket 6 by 50 cm along the grouting pipe 8; [0040] (4) injecting the amount of silicate resin materials into the grouting pipe 8 under the control of a grouting device 4 to fill the elastic silicone tube 9 at the bottom of the borehole conduit 3 to implement fast expansion thereof, and to ensure deformation and expansion of the deformable bracket 6 with the expansion of the elastic silicone tube 9; [0041] (5) injecting steel fiber reinforced grout that is stirred evenly into the grouting pipe 8 under the control of a grouting device 4 to fill the elastic silicone tube 9 at the bottom of the borehole conduit 3 to implement a block stone like structure; [0042] (6) the console 5 controlling the circumferential lock apparatus 11 by means of the pipeline 7, to implement that the circumferential lock close insert 13 closely seals the elastic silicone tube 9, and the grouting device 4 stopping grouting at the same time; [0043] (7) the console 5 controlling a circumferential scissor apparatus 10 located above the circumferential lock apparatus 11 by means of the pipeline 7 to implement that the circumferential scissor 12 cuts the elastic silicone tube 9 and the deformable bracket 6 to complete separation of the formed block stone like structure 1 from the elastic silicone tube 9, thereby completing a first block stone like structure 1; [0044] (8) lowering the elastic silicone tube 9 and the deformable bracket 6 by 10 cm along the grouting pipe 8; [0045] (9) the console 5 controlling the circumferential lock apparatus 11 by means of the pipeline 7, to implement that the circumferential lock close insert 13 closely seals the elastic silicone tube 9; [0046] (10) lowering the elastic silicone tube 9 and the deformable bracket 6 by 50 cm along the grouting pipe 8; [0047] (11) repeating steps (4) to (7) to successively complete the block stone like structure to complete filling the deformable karst cave finally.

Embodiment 2

[0048] based on Embodiment 1, the deformable bracket 6 is circular with a diameter of 40 cm after the deformable bracket is expanded, and the material thereof is steel wire; the elastic silicone tube 9 has an inner diameter of 25 cm and a thickness of 2 cm; and filling steps of the filling material are:

[0049] (1) dividing the silicate resin into two groups: A and B, where in group A, a viscosity is 300 cp, and a density is 1500 g/cm3, and in group B, a viscosity is 135 cp, and a density is 1200 g/cm3, and injecting groups A and B into the elastic silicone tube after being mixed at a volume ratio of 1:1; and

[0050] (2) injecting the steel fiber and the grout into the elastic silicone tube to complete the filling after being stirred evenly at a mass ratio of 1:10.