基于尖点突变理论的充填体下采空区安全顶板厚度计算模型

doi:10.13722/j.cnki.jrme.2016.0199

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Abstract The roof structure above goaf is prevalent in mines which use backfill method. Determining the reasonable thickness of the roof under the loads of filling body is important to guarantee the mine safety. The mechanisms of formation and failure of the roof above the goaf under the filling body were analyzed and a mechanical stability model of the roof structure was established to analyze the instability mechanism by applying the cusp catastrophe theory. The expression of the limit thickness of the goaf roof under filling body was deduced according to the sufficient condition and necessary condition of roof structure instability in cusp catastrophe model. The expression was applied to a lead and zinc mine and the safe roof thickness was calculated to be larger than 11.48 m. 12 m was used as the safe thickness and verified in the practical production and numerical simulation.

Key words： mining engineering cusp catastrophe model thickness calculation numerical simulation

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	Articles by authors
	XU Heng1
	2
	WANG Yiming1
	2
	WU Aixiang1
	2
	LI Fangfang1
	GAO Weihong1
	2

Cite this article:

XU Heng1,2,WANG Yiming1, et al. A computational model of safe thickness of roof under filling body based on cusp catastrophe theory[J]. , 2017, 36(3): 579-586.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2016.0199 OR http://www.rockmech.org/EN/Y2017/V36/I3/579

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