SU723188A1 - Method and apparatus for erecting artificial pillar - Google Patents

Description

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The invention relates to the field of mining and can be used in the underground mining of minerals for the construction of artificial pillars.

There is a method of erecting an artificial pillar, which consists in installing metal formwork, supplying a hardening solution to it, moving it after solidification of the solution using hydraulic jacks and then filling the resulting cavity, as well as a device for its implementation, made in the form of a U-shaped formwork of sliding shields with hydraulic rails and hydraulic jacks for advancing M.

The disadvantage of such a method and device for its implementation is the multi-operability and laboriousness of the process of erecting an artificial array, as well as the cumbersome formwork design.

In addition, there is a known method of erecting an artificial pillar in the underground mining of useful mineral deposits, which consists in establishing in the developed space between the exact and elastic roof

ot5bno4KH, and a device for carrying out the device, including a bag, made in the form of a bag, and an inlet 2,

The disadvantage of this method and device for its implementation lies in the fact that its construction is associated each time with the need to deliver a new polymer shell to the developed space, fix this shell between rotating rocks, connect and fix the discharge lines.

The purpose of the invention is to ensure the saving of the shell material and reduce the laboriousness of the work during the construction of a tape artificial pillar.

Claims (2)

This is achieved by setting the shell with the open side in the direction opposite to the build-up of a tapered pillar, moving the shell by acting on it with the injected solution and simultaneously introducing the solution out of the shell into the reagent, which accelerates the process of solution hardening; wherein the shell (; and is provided with a frame embedded in it with channels 37 for separately introducing the hardening accelerator, which are equipped with outlet nozzles mounted on the border of the open side of the shell. Fig. 1 shows a device for carrying out this method, side view; Fig. 2 - the same plan (in the plane of the formation). The artificial pillar 1 is erected using device 2, which includes an elastic shell J, made in the form of a bag of elastic material. Inside the shell is a frame 4 with channel 5 for supplying a hardening solution and channels 6 To supply reagent accelerating the hardening process. Channels 6 have outlet nozzles on the border of the open surface of the shell. The proposed method of erecting an artificial pillar is as follows: Install the device 2 in the clearing excavation (lava, chamber, etc.) The devices are installed in the opposite direction to the build-up of tape-shaped artificial pulp. The presence in the device of a shell 3 of elastic material provides sealing of the interface points on its contact with lateral rocks, as well as its self-regulation and its fixation according to the formation formation. A coarse pipe is connected to the channel 5 of the frame 4 for injecting a hardening solution, and a pipe for the injection of a reagent that accelerates the hardening process is connected to the channels 6. The injection lines are connected to the device once during the initial installation. These lines are fixed on flange surfaces of the devices, and thus they constantly move with the devices, which eliminates the operations of periodically connecting and securing these lines. After all the adjustment work is completed, the hardening solution and the reagent are accelerated. The solution is accelerated. The starting components are fed simultaneously, but the reagent is accelerated by the channels 6 and the nozzles at the outlet of the solution from under the shell. This contributes to the rapid hardening of the solution and the form of a fenanshoe artificial pillar in the shell cavity. So, each newly supplied amount of the solution under pressure is in a locally closed volume, which creates a longitudinal force, like a tightening device from the rear sight and moving it to a new location. Since the injection of the initial components is a controllable process, the construction of the artificial spiral is also displaced and it is also a controllable process, which makes it possible to carry out it in a limited area, directly following the cleaning works. This increases the efficiency of rock pressure control using artificial pillars. This technical solution allows the constant use of the same device for the construction of an artificial pillar of almost any length. And the whole process of the construction of the pillar after short initial installation works is reduced to one controllable operation: the injection into the envelope of the original components, which characterizes the proposed method as low-operational and more reliable. In addition, after the initial installation work, the subsequent human presence in the clearing face is excluded, since the device moves along the previously erected part of the artificial pillar as if it were a guide. The injection of the initial components can be carried out remotely. Invention 1. A method for constructing an artificial pillar in underground mining of mineral deposits involves enclosing a flexible casing in the developed space between the soil and the roof, which is made in the form of a bag, and injecting a hardening solution into it, in order to save material and reduce the laboriousness of work during the construction of the artificial tapered pillar, the shell is set open in the opposite direction to the build-up of the tape artificial center face, the shell is moved by exposing it nagn.etaemym solution and simultaneous' on the output solution from the shell administered agent accelerates the hardening process yuschly solution. 2. Device For carrying out the method according to claim 1, comprising a shell made in the form of a bag and an inlet, characterized in that the shell is equipped with a frame with channels for separate input of the hardening accelerator, which are provided with output sockets installed on the border open side of the shell. Sources of information taken into account in the examination 1.Patent of France No. 2153377, cl. At 21 F 15/00, Pubpick. 1973. 2. USSR author's certificate number 527519, cl. E 21 F 15/08, 1969 (prototype). //../. Figure 1 //(../. /