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Device and method for sealing, grouting, and reinforcing broken coal-rock masses

A technique of crushing coal and rock mass and grouting reinforcement, which is applied in shaft equipment, earthwork drilling, sealing/separation, etc., can solve the problems that cannot be widely used, poor grouting effect, and poor hole sealing, etc., and achieve Good sealing effect, low production cost and low cost effect

Inactive Publication Date: 2019-12-31
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various traditional grouting equipment are mostly suitable for the ground, and some devices specially used for downhole grouting are not well sealed due to factors such as poor hole sealing and complicated construction, so the grouting effect is not good, so they cannot Widely used in rock mass

Method used

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  • Device and method for sealing, grouting, and reinforcing broken coal-rock masses
  • Device and method for sealing, grouting, and reinforcing broken coal-rock masses
  • Device and method for sealing, grouting, and reinforcing broken coal-rock masses

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Embodiment Construction

[0028] Such as figure 1 , figure 2 with image 3 As shown, a kind of soft coal and rock body sealing grouting device comprises a grouting pipe 1, the grouting pipe 1 is a hollow steel pipe, and its left end is provided with an external thread, and a nut 3 is screwed on the external thread section of the grouting pipe 1; The tail joint 7 is composed of a ring connector and a short tube, one end of the short tube is welded to the ring connector, and two ring grooves are arranged side by side at the other end; the tail joint 7 is welded through the other side of the ring connector At the right end of the grouting pipe 1 and the axes of the short pipe, the ring connector, and the grouting pipe coincide; the tail end protection tube 9 is sleeved on the periphery of the tail end joint 7 and one end is welded with the ring connector; the duckbill The valve 8 is an integrally formed structure made of rubber, including a duckbill and a cylindrical bottom, and two circular convex lin...

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Abstract

The invention belongs to the technical field of surrounding rock control in coal mining, and particularly relates to a device and method for sealing, grouting, and reinforcing broken coal-rock masses.Technical problems such as poor sealing and grouting effects and complex construction in the prior art are solved. The device mainly comprises a grouting pipe, a wrench, a nut, a casing pipe, a sealing sleeve, a gasket, a tail end joint, a duckbill valve, and a tail end protection tube, one end of the grouting pipe is provided with an external thread, the nut is in screw joint with the grouting pipe through the external thread, the wrench is connected to the outside of the nut in a sleeving mode, the other end of the grouting pipe is fixedly connected with the tail end joint, the tail end protection tube is fixed to the tail end joint, and the duckbill valve is mounted on the tail end joint in a sleeving mode and completely located in the protection tube at the tail end; and the casing pipe, the sealing sleeve and the gasket are mounted on the outer wall of the grouting pipe between the nut and the tail end joint in turn in a sleeving mode. According to the device and method for sealing, grouting, and reinforcing the broken coal-rock masses, the sealing effect is good, the grouting process is simple, slurry can be prevented from flowing back, the cost is low, the grouting speed ishigh, and the device for sealing, grouting, and reinforcing the soft and broken coal-rock masses can be widely used and promoted.

Description

technical field [0001] The invention belongs to the technical field of surrounding rock control in coal mine mining, and in particular relates to a device and method for sealing and grouting reinforcement of broken coal and rock mass. Background technique [0002] Mine construction often encounters weak, broken and other adverse geological conditions, which bring great difficulties to the underground surrounding rock management, mainly reflected in the underground support, which seriously affects the safe and efficient production of coal mines. Grouting is the solution to all kinds of problems. It is an important means and is widely used in many fields such as reinforcement and rock mass instability. Various traditional grouting equipment are mostly suitable for the ground, and some devices specially used for downhole grouting are not well sealed due to factors such as poor hole sealing and complicated construction, so the grouting effect is not good, so they cannot It has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21B33/13
CPCE21B33/13E21D11/105
Inventor 刘少伟贾后省马保平付孟雄杨云飞高建军郭胜
Owner HENAN POLYTECHNIC UNIV
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