Preventing rock burst technology by roof cutting and roadway protection in mining along goaf roadway of dangerous area

ZHANG Lei

Safety in Coal Mines > 2021 > 52(2): 98-104.

ZHANG Lei. Preventing rock burst technology by roof cutting and roadway protection in mining along goaf roadway of dangerous area[J]. Safety in Coal Mines, 2021, 52(2): 98-104.

Citation:

ZHANG Lei. Preventing rock burst technology by roof cutting and roadway protection in mining along goaf roadway of dangerous area[J]. Safety in Coal Mines, 2021, 52(2): 98-104.

Citation:

ZHANG Lei. Preventing rock burst technology by roof cutting and roadway protection in mining along goaf roadway of dangerous area[J]. Safety in Coal Mines, 2021, 52(2): 98-104.

Preventing rock burst technology by roof cutting and roadway protection in mining along goaf roadway of dangerous area

ZHANG Lei

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Published Date: February 19, 2021

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Abstract

Abstract

In order to solve the problem of roadway deformation of gob-side entry driving in the dangerous area of Zhangshuanglou Coal Mine, taking 92606 working face as the research object, the technology of blasting and roof cutting is studied by means of theoretical analysis, and according to the actual situation of 92606 working face, the depth of roof blasting hole is determined to be 3.3 m to 12.6 m, the distance between two blasting holes is less than or equal to 1 m, and the effect of roof cutting is good. At the same time, four kinds of preventing rock burst control schemes are proposed for 92606 working face. According to the comparison and analysis of the field situation, when the hole depth is 8 m and 6 m, the spacing is 50 cm, and the blasting is carried out vertically and upward, there is basically no suspended roof at the lower corner of the working face, and the roof collapses with the support. Through the roof cutting, the mining deformation of the corner hanging roof and the gob side roadway of 92606 working face are effectively controlled.
- gob-side entry driving,
- mining face,
- roof cutting and roadway protection,
- rock burst,
- control technology for preventing rock burst

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References

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