SU1587206A1 - Method and apparatus for consolidating rock - Google Patents

Abstract

The invention relates to the mining industry, is intended to fasten mining workings and can be used in the construction industry. The purpose of the invention is to increase the efficiency of the hardening of rocks. After drilling the holes in the massif, an injector 3 is installed on the surface of the mine working 2 to strengthen the rocks, which contains a sealing container 10. The bonding composition is injected along the hydraulic line 15 to supply the working fluid to the injection cylinder 4 with a hardener. This opens the pre-valve 5, the solution presses against the floating valve 6 and, passing through the openings of its ring, is mixed with the hardener coming through the pipeline. Then, the quick-hardening solution, entering the sealing container 10, creates an internal carrier shell 12 along the contour of generation in the marginal zone 11 of the massif. Then, the injector 3 is relocated to the adjacent portion. Thus, a carrier shell is created with a pitch leading the fastening step of the deep part of the array by an amount not less than the maximum spreading radius of the solution with a normal curing time. Then the device 1 is installed on the unfixed area at the mouth of the hole. An injector 3, placed in the pipe, is opened through the open gripper 13 into the hole and fixed by the gripper 13. Then, the solution is injected with the normal curing time into the deep part of the array. 2 sec. f-ly, 6 ill.

Description

The invention relates to the mining industry, in particular to the fastening of mine workings, and can also be used in the construction industry.

The aim of the invention is to increase

nye movement. Ball globule 14, hinged on tank 10, pushes it against the rock and additional sealing is limited to o6ecne4HBaef around the hole. With the effectiveness of hardening of rocks. 5 pressure of 5–7 MPa, which is necessary. In FIG. Figure 1 shows a device in which the device can be kept on the surface of the solution injecting the solution into the deep part of the array; in fig. 2 - device, view

from above; in fig. 3 - device at the moment

tee array during its operation, opens the pre-valve 5 cylinder 4 and

o.pvxj, ..., ... j hardening of the edge part occurs

pumping the solution into the marginal part of the array. After closing the floating clap array; in fig. 4 — node I in FIG. 3; By 6, the pressure in the system rises; FIG. 5 is a flow chart of a method that opens a valve in the injector 3 and injects a bonding solution with a normal cure time into the deep part of the array. As a result, the hardening of the inter-chamber pillar; in fig. 6 is a flow chart of the method for reinforcing production.

1 hardening VYRAIOTKI.Iinmuk part mcji, v.riuu. j p4, j „..“ .-

For the strengthening of rocks in the massif the maximum possible pressure is given.

I through 8-10 m drill hole 1 diameter of the injection of reinforcement mortar deep

rum 42 mm, length 3.8-4.0 m. Then, on the I surface of the mine workout 2 at a distance i of the SRI 0.5-1.0 m from the hole there is installed

Not array and filling with a solution of small trash. In the size of the order of 0.1-0.01 mm.

FDI v, -.,. m V., -.j. , .. When optimum pressure is reached

injector 3 for rock reinforcement. 20 injection (16-18 MPa) injection injection. The fastening installation is forced off, the pressure of the solution with the normal curing time is released into the cylinder 4 with the hardener. This opens the pre-valve 5, the bonding solution presses against the floating valve 6 and, the passage through the openings 7 of the ring 8, is displaced with the hardener. Then, through the opening 9, the fastening quick-hardening solution enters the space bounded by the capacitance 10.

25

in the system, the floating valve 6 is returned to the initial position, the cylinder 4 is filled with another dose of hardener and the device is installed in a new place.

Claims (2)

1. The method of hardening rocks this results in fast-hardening, which involves the creation of an internal carrier solution in technological cracks. eleven shell along the contour of the excavation in the near-boundary zone 11 and the simultaneous contour part of the massif by injecting the insulating shell 12 to the quick-hardening solution and the surface of the excavation. The solution in the process — the subsequent fixation of the deep part — the maoic cracks are injected to full force by injecting the solution with the hardener dissolving and closing with the normal curing time, casting valve 6. due to the fact that, in order to increase hardening efficiency of the rocks, carrying the shell along the contour of the mine is placed with a step ahead of the mounting step of the deep part of the massif after the curing of the solution, the injector 3 is moved to the adjacent area, where the operation of hardening the marginal zone is repeated. Thus, hardening is 40 manners, not less than the maximum radius with the marginal layer of rocks on the area of the solution spreading with a normal time around the hole with a step leading the fastening step of the deep part of the massif by an amount not less than the maximum radius hardening. 2. A device for strengthening the rocks, including a tank, along the contour of the distribution of the solution with a normal time, is a sealant, discharge “,.” “.“ ““ “And QTOM vrrnnfirTRo vc- pilindo With a pneumatic valve I In hardening. The device is then installed on an unsecured area at the mouth of the hole, equal in area to the sealing container 10, while the injector 3 of the device 1 is inserted through the open gripper 13 into the hole until the ball thickening 14 stops in the container 10 and fixes it with the gripper 13. The fastening solution is fed into line 15. Initially, the solution enters the injector 3, which, expanding, is compressed into a cylinder with a pre-valve and an injector interconnected by a hydraulic system for supplying the working fluid to the injector and a reservoir, characterized in that, in order to increase the efficiency of strengthening 50 rocks, the cylinder is additionally equipped with a floating valve with a ring with perimeter holes, and the injector is located in the pipe with the possibility of movement, at the junction of the pipe with the container, a gripper is installed for the in-axis direction and communicates the shank of the torus, and the pressure cylinder is connected to the ball thickening 14 ostupatel-c hardener supply conduit nye movement. Ball globule 14, hinged on tank 10, pushes it against the rock and additional sealing is limited to o6ecne4HBaef around the hole. When the pressure reaches 5-7 MPa, it is necessary to hold the device on the surface injection (16-18 MPa) the injection unit is shut off, the pressure is released in the system, the floating valve 6 is returned to the initial position, the cylinder 4 is filled with another dose of hardener and the device is installed in a new place. Invention Formula not less than the maximum radius of distribution of the solution with normal hardening. 2. Device for strengthening of rocks, including a tank, along the contour of which a sealant is located, an injection pilindo With a hydraulic valve I in the second is a sealant, an injection pilindo With a pneumatic valve I In a cylinder with a pre-valve and an injector, interconnected by a hydraulic system for supplying the working fluid to the injector and a container, characterized in that, in order to increase the efficiency of rock strengthening, the cylinder is additionally equipped with a floating valve with a ring with perimeter holes, and the injector is located in the pipe with the possibility of movement, and at the junction of the pipe with the container a gripper for the injector is installed, and the pressure cylinder is connected to the supply pipe of the hardener Fig.Z Fi, g.2 Fia i / A /// /// /// /// /// /// /// /// 7/7 /// /// /// /// // .five SHZHSCH MS / DI Wix / nU I; h fji / (J4 ,, /// // / L M .. ///////////// - -UlYV / / yz