Method for filling deformable karst cave

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 a 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 an 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.