巨厚岩层–煤柱系统协调变形及其稳定性研究

doi:10.13722/j.cnki.jrme.2016.0720

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Abstract This study investigated the compatible deformation model and the stability of the system of super-thick strata and coal pillars based on the recoverability safety of a longwall panel with large coal pillars under super-thick strata in Gaozhuang mine in Jining，Shandong province，China. The coal pillar was found to be able to isolate the gob and support the super thick strata and the overburden structure. The compatible deformation model for super-thick strata and coal pillars was established on the basis of the flexural deflection of super-thick strata and the vertical compressive deformation of coal pillars. The stress source，form as well as the entire compatible deformation mechanism of the vertical deformation of coal pillars were analyzed. The stress-strain relation of the compatible deformation for the system was deduced. The mode and criterion of system instability and its impact on dynamic disasters under mines were discussed. The disaster prevention and control techniques were proposed. The research results were applied to analyze the system stability of 3up1102 Longwall Panel before mining，and the disasters were forecasted. The rationality of the research was initially verified according to the micro-seismic monitoring results and the dynamic stress conditions at the recoverability stage. The purpose of quake without disasters has achieved through implementing the targeted preventive measures.

Key words： mining engineering super-thick strata overburden structure compatible deformation stability micro-seismic monitoring

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	Articles by authors
	ZHANG Ming1
	2
	JIANG Fuxing1
	2
	LI Keqing1
	2
	WANG Cunwen1
	2
	WU Xiuguang3
	GAO Huajun4
	JI Shenghua4

Cite this article:

ZHANG Ming1,2,JIANG Fuxing1, et al. Study of the compatible deformation and stability of the system of super thick strata and coal pillars[J]. , 2017, 36(2): 326-334.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2016.0720 OR http://www.rockmech.org/EN/Y2017/V36/I2/326

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