深井厚煤层冲击地压与大变形协调控制机制研究

doi:10.13722/j.cnki.jrme.2014.1542

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Abstract Rock burst and large deformation coordination controlling is a common problem of thick coal seam in deep mines. The mechanism of rock burst and large deformation coordination controlling in thick coal seam of deep shaft was studied through field monitoring and theoretical analysis，and the mechanical model of gob-side entry lateral roof secondary fracture was set up. Following results were obtained：(1) In the condition of Xinjulong coal mine，the pre-relief borehole with diameter of 120 mm，depth of 25 m and spacing of 1 m was implemented，the effective pressure-relief protection area width is 10–15 m. (2) The mechanism of gob-side entry large deformation of thick coal seam in deep shaft is mainly caused by secondary breakage of roof and rotation induced by intensively venting the pulverized coal，and verified by theory. (3) The mechanism of rock burst and large deformation coordination controlling in thick coal seam of deep shaft is to determine the reasonable pressure-relief parameters. By intensively venting pulverized coal to release the expansion deformation of surrounding rock，the pressure of roadway surrounding rock is also decreased. Meanwhile，the damage level of surrounding rock structure is reduced. Field practice shows that by optimizing the parameters of supporting technology and pressure-relief，the problem of large deformation of gob-side entry can be resolved to a certain extent. The results can provide some references for rock burst and large deformation coordination controlling in thick coal seam of deep shaft.

Key words： mining engineering deep shaft thick coal seam rock burst large deformation coordination control

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	Articles by authors
	ZHU Sitao1
	JIANG Fuxing1
	LIU Jinhai2
	TAN Wenfeng3
	XU Bo3
	CHENG Xiangmeng3
	CHEN Qiang3

Cite this article:

ZHU Sitao1,JIANG Fuxing1,LIU Jinhai2, et al. RESEARCH ON MECHANISM OF ROCK BURST AND LARGE DEFORMATION COORDINATION CONTROLLING IN THICK COAL SEAM OF DEEP SHAFT[J]. , 2015, 34(S2): 4262-4268.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1542 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/4262

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