A pressure relief method for surrounding rock of rock burst roadway

Abstract

A pressure relief method for the surrounding rock of a rock burst roadway, in which a borehole is horizontally arranged on the left and right sides of the roadway; the borehole penetration probe is used to detect the borehole, and the pressure situation and displacement information data at different depths are obtained ; The data acquisition instrument analyzes the stress conditions at different depths of the gang according to the obtained information on the pressure and displacement in the borehole, and determines the depth of the kerf for pressure relief; according to the obtained kerf depth, the In the middle of the vertical surface of the side, arrange a row of drill holes at a certain interval; use the electric pulse device to drill holes in the roadway floor to perform fracturing operations; after the expected effect is achieved, take out the electric pulse device and carry out The impact operation of the next adjacent drilling hole is completed until the fracturing operation of the entire roadway side is completed; the drilling fracturing operation on the other side of the roadway bottom plate is completed; the cracking surface of the roadway side is reinforced by grouting. The method has high detection precision, fast cutting speed and good pressure relief effect.

Description

technical field [0001] The invention belongs to the technical field of mine roadway rock burst prevention and control, and in particular relates to a pressure relief method for surrounding rock of a rock burst roadway. Background technique [0002] At present, my country's coal mining is mainly underground mining mode. For deep mine roadways, especially 1,000-meter-deep wells, rockbursts of different intensities have brought great harm to the safe production of mines. Therefore, the prevention and control of rockbursts is an important One of the main problems of deep well mining. In the process of underground mining, strong rock burst will appear in the roadway. The impact of ground pressure in the roadway will cause a large deformation of the roadway, and even cause damage to the roadway. At present, for the prevention and treatment of roadway rock burst, there are mainly drilling pressure relief method, excavation pressure relief roadway, hydraulic fracturing and blasting...

AI Technical Summary

Problems solved by technology

However, because the original borehole penetrating method has only a single probe on the probe to detect the surrounding rock of the borehole, not only the test orientation is deviated during detection, but also the test data is not accurate enough.

In terms of floor control, the traditional roof blasting method has disadvantages such as high explosive consumption, danger, and large power disturbance.

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