SU1425340A1 - Apparatus for injecting solidifying composition into rock mass - Google Patents

Abstract

The invention relates to mining. The goal is to increase the safety of work and reduce the loss of hardening solution when removing the device. Couplings (M) 2 and 4 are installed at the ends of the tube 1 for feeding the hardening solution. The back M 2 of the bullet 2 is full of a flexible tube 1 relative to the M 2 and 4. A tube 7 with a cup 8 and a flexible sheath 6 covering the outer surfaces of M 2 and 4 and P 5 is loosely installed at tube 1. Shell 6 is freely attached at one end by tube 7 to tube 1. In order to prevent the sheath 6 from breaking, , its leading edge is covered at M 4 s Akane 8. Under the action of liquid supplied into the hole under pressure, P 5 is shortened and the walls podpruzhinivaets schpura, sealing the edges thereof, with R 5 M 2 and 4 are shifted to the middle. In this case, M 4 biases the sealer back, and the cup 8 is disconnected from the sleeve 7. When pumping a hardening solution, it contacts only the sheath 6, the sleeve 7 and the glass 8, which are glued to the walls of the hole during solidification of the solution. 1 il. 8 1C with to

Description

i The invention relates to mining, in particular, to devices for reinforcing unstable rocks in cleanings; Stem and preparatory workings by means of injection under pressure of various hardening solutions; i The purpose of the invention is to increase the safety of work and reduce the loss of hardening solution I during extraction Drill hole devices for reuse.

I The drawing shows a device for 1dl injection of hardening solution IB rock mass, longitudinal section.

; The device consists of a tube 1 | for the supply of hardening solution {mobile. rear coupling 2, containing | Crane 3, and fixed relative to | tube 1 of the front coupling 4 interconnected elastic. pipe 5, flexible sheath 6, covering the outer surfaces of couplings 2 and 4 and a flexible pipe 5. Flexible sheath 6 | one end freely attached to | front end of tube 1 by means of sleeve 7 and cup 8, covering: Front edge of the outer surface : flexible sheath 6 n fixed coupling | 4. Sleeve 7 is freely installed at the front end of tube 1. Glass 8 is installed on sleeve 7 and is intended to prevent rupture of shell 1 6 when inserting the device into the hole. The device works as follows;

The device is transported without a sleeve 7, a flexible shell 6 and a cup 8, which are mounted on the device immediately before being inserted into the hole. With the introduction of the device into the front part of the flexible shell 6, the irregularity of the hole wall and the danger of its rupture arise. To use a flexible shell 6 of low strength, for example polyethylene, a cup 8 is used that covers the front edge of the outer surface of the flexible shell 6.

After the device is inserted into the hole, the valve 3 is opened and the liquid intended for sealing is supplied under pressure into the annular gap between the tube 1 and the elastic pipe 5. Under the action of the liquid, the elastic pipe 5 increases in diameter, pressing against the walls of the hole,

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thus sealing it, and shortening it. At the same time, the middle part of the elastic nozzle 5, as most strongly pressed against the walls of the hole, remains stationary, and the edges are displaced to the middle together with the sleeves 2 and 4. Coupling 4 carries the sealing device behind itself and shifts it back. In this case, the cup is left in place and detached from the sleeve. Then the valve 3 is closed and the hardening solution is pumped through the tube 1. The hardening solution contacts only the flexible sheath 6, the sleeve 7 and the glass 8, which are glued to the walls of the hole when the solution is solidified. At the end of the injection process, the tube 1 is filled with a washing liquid so that the solution does not solidify in it. After the final solidification of the solution in the rock mass, the device is removed, the cabin. To do this, open the valve 3 and relieve the fluid pressure in the annular gap between the tube 1 and the elastic pipe 5.

Due to the elasticity of the pipe 5 takes the original size and is removed from the hole. The sheath 6 is flexible, the sleeve 7 and the cup 8 remain in the hole.

Claims (1)

The invention is a device for injecting a hardening solution into a rock mass, including a tube for feeding a hardening solution, at the ends of which there are clutches installed, one of which is movable relative to the tube, and an elastic spout placed between them, in order to increase the work safety and reduce the loss of hardening solution when removing the device from the hole for reuse, it is equipped with a sleeve with a glass and a flexible shell installed on it, second outer surfaces and coupling sleeve, wherein the sleeve is loosely fitted on the front end of the tube and the shell at one end loosely fastened thereon by means of the sleeve, and its front edge is covered on the fixed sleeve to prevent glass rupture of the introduction device into the hole.