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A support method for rock roadway support using adjustable bolts

An adjustable, bolt technology, applied in the installation of bolts, earthwork drilling, mining equipment, etc., can solve the problems of complex methods, low work efficiency, time-consuming and laborious, and achieve the effect of simple methods and improved work efficiency.

Inactive Publication Date: 2017-11-10
HENAN POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, in order to solve the defects of the prior art, the purpose of the present invention is to provide a support method for rock roadway support using adjustable bolts, which can effectively solve the problems of complex existing methods, time-consuming and labor-intensive, and low work efficiency. question

Method used

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  • A support method for rock roadway support using adjustable bolts
  • A support method for rock roadway support using adjustable bolts
  • A support method for rock roadway support using adjustable bolts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 75g coal mine permitted explosive 6 and safety electric detonator 7 are installed in the charge end 4 of anchor rod 1, the first chemical preparation 10 and the second chemical preparation 11 of plastic packaging are placed in the middle of buffer device 9 and loess gun mud 12, and then Connect the anchor rod 1 with the connecting rod 2, connect the connecting rod 2 with the fastening rod 3, lead the detonator foot wire 8 of the safety electric detonator 7 out of the rod body, and detonate the coal mine permitted explosives contained in the charging end 4 through the safety electric detonator 7 6. The energy released by the explosion makes the charging end 4 of the anchor rod cut into four expanded pieces with slits tightly combined with the surrounding rock. When the bag is broken, the first chemical preparation 10 and the second chemical preparation 11 are fully mixed to undergo a chemical reaction to form an expansion material with good flame retardant effect, compres...

Embodiment 2

[0016] The coal mine roadway is coal mine hard rock, 100g of coal mine permitted explosive 6 and safety electric detonator 7 are installed in the charge end 4 of the anchor rod 1, and the first chemical agent 10 of plastic packaging is placed between the buffer device 9 and the loess gun mud 12 and the second chemical preparation 11, then the anchor rod 1 is connected with the connecting rod 2, the connecting rod 2 is connected with the fastening rod 3, the detonator foot wire 8 of the safety electric detonator 7 is drawn out of the rod body, and the charge is detonated by the safety electric detonator 7 End 4 is equipped with coal mine explosives 6. The energy released by the explosion makes the four expanded pieces of the anchor rod 1 cut with slits tightly combined with the surrounding rock. At the same time, the energy released by the explosion makes the first chemical The bags of preparation 10 and the second chemical preparation 11 are broken, and the first chemical prepa...

Embodiment 3

[0018] The coal mine roadway is the soft rock of the coal mine, 50g coal mine permitted explosive 6 and safety electric detonator 7 are installed in the charging end 4 of the anchor rod 1, and the first chemical agent 10 of plastic packaging is placed between the buffer device 9 and the loess gun mud 12 and the second chemical preparation 11, then the anchor rod 1 is connected with the connecting rod 2, the connecting rod 2 is connected with the fastening rod 3, the detonator foot wire 8 of the safety electric detonator 7 is drawn out of the rod body, and the charge is detonated by the safety electric detonator 7 End 4 is equipped with coal mine explosives 6. The energy released by the explosion makes the four expanded pieces of the anchor rod 1 cut with slits tightly combined with the surrounding rock. At the same time, the energy released by the explosion makes the first chemical The bags of preparation 10 and the second chemical preparation 11 are broken, and the first chemi...

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Abstract

The invention relates to a method utilizing an adjustable anchor rod to support rock roadway and can effectively solve the problem that existing methods are complex, time consuming, labor consuming and low in working efficiency. The technical scheme includes that a coalmine permissible explosive and a safe electric detonator are arranged in an explosive containing end of the anchor rod, the outer side of a rod piece of the explosive containing end is processed to be toothed, a first chemical agent and a second chemical agent which are packaged plastically are placed between a buffering device and loess stemming, a detonator leg wire of the safe electric detonator is led out of a rod body, the coalmine permissible explosive contained in the explosive containing end is detonated through the safe electric detonator, and energy released during explosion enables the toothed outer side to be closely combined with surrounding rock. By the method, pulling resistance can be provided immediately to realize instant anchoring effect, operations like midway cleaning and placing of an expansive material are not needed, the method is supportive of completion at a time and time saving and labor saving, working efficiency is improved greatly, and the method is an innovation on supporting methods utilizing adjustable anchor rods.

Description

technical field [0001] The invention relates to the field of rock roadway support in coal mines, in particular to a support method for rock roadway support using an adjustable bolt. Background technique [0002] There are two types of rocks often encountered in the supporting surrounding rock of coal mine rock roadway, one is hard rock and the other is soft rock. With the continuous extension of the opening depth, the hard rock roadway is prone to "rock burst", and the soft rock roadway is easy to cause roadway deformation, and the support is extremely difficult. The usual bolt support is limited by the width of the roadway, and the support range is small, usually only about 2.0m, which is difficult to support effectively. The patent No. ZL201320558666.X can effectively solve this problem by filling and anchoring split adjustable anchor rods in the explosion expansion cavity. Lead out the detonator leg line, and then carry out blasting according to the blasting operation r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/00C08G18/66C08G18/48C08G18/42C08G18/32C08J9/14C08K5/521C08G101/00
CPCC08G18/42C08G18/48C08G18/664C08G18/6674C08G2101/00C08J9/144C08J2203/142C08J2375/06C08J2375/08C08K5/521E21D21/002
Inventor 梁为民王东飞杨小林褚怀保王金星赵波张文平崔国顺吕小师
Owner HENAN POLYTECHNIC UNIV