深井突水诱发静压冲击机制研究

doi:10.13722/j.cnki.jrme.2017.0593

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Abstract

The cause of rockbursts is associated with the variation of the abutment pressure in surrounding rocks. Based on the case of the LW1301 in Yuncheng Coal Mine，this paper aims to explore the mechanism of the rockburst occurrence under a specific condition of little mining influence. Theoretical analysis，field monitoring，and an engineering test were used to investigate the stress distribution characteristics in the surrounding rocks of a water sump，and their property change. The research work involves：(1) a new rockburst type of static-stress rockburst and its occurrence mechanism. (2) Stress distribution characteristics in the surrounding rocks of the water sump，and (3) the change of the rock and coal property around the water sump through a water immersion test for a month. The study reveals that the rockburst event occurred in the LW1301 in Yuncheng Coal Mine on January 8 is induced by the failure of the weakened coal pillar in the water sump，leading to the transformation of the roof structure and the stress redistribution in the surrounding rocks. The results of this work can provide a reference for rockburst preventions of other longwall panels with similar conditions.

Key words： mining engineering rockburst abutment pressure static-stress rockburst roof structure immersion water test

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	Articles by authors
	LI Dong1
	JIANG Fuxing1
	WANG Cunwen1
	TIAN Zhaojun2
	WANG Yong2
	LIU Jinhai3

Cite this article:

LI Dong1,JIANG Fuxing1,WANG Cunwen1, et al. Study on the mechanism of rockburst induced by water inrush from deep[J]. , 2018, 37(S2): 4038-4046.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.0593 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/IS2/4038

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