大空间远近场结构失稳矿压作用与控制技术

doi:10.13722/j.cnki.jrme.2017.1105

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Abstract The strong strata behavior and the corresponding control technology in mining the super-thick coal seam with hard roofs were studied with field test and theoretical analysis to reveal that the mechanism of strong strata behavior and an effective control technology was proposed in this paper. The results show that the breakdown of near field results in a compound periodic weighting in working face，and the instability of far field strata is the main factor that causes a strong strata behavior. The working space experiences stronger strata behavior when it is mined around gob area and under coal pillars because of a more complicated fracture and stress concentration in the high-level hard strata. The architecture of control for the near-far strata with the methods of presplitting underground and hydraulic fracturing in the ground was put forward. Thus，the pressure effects of the hard roofs in near-far field are weakened and the strong strata behavior is effectively controlled. This controlling system presents a new approach to manage the mine pressure.

Key words： mining engineering large space hard roofs strata behavior presplitting underground hydraulic fracturing

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	Articles by authors
	YU Bin1
	2
	GAO Rui2
	MENG Xiangbin1
	KUANG Tiejun1
	2

Cite this article:

YU Bin1,2,GAO Rui2, et al. Near-far strata structure instability and associate strata behaviors in large space and corresponding control technology[J]. , 2018, 37(5): 1134-1145.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.1105 OR http://www.rockmech.org/EN/Y2018/V37/I5/1134

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