液压支架群组支护原理与承载特性

doi:10.13722/j.cnki.jrme.2016.0706

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Abstract

According to the supporting characteristics of powered support，this paper constructed the elastic foundation-beam model where the powered support groups are treated as elastic foundation，derived the formula of supporting resistance and roof deflection. Based on which，this paper studied the key parameters，such as the different stiffness of powered support，roof rock，roof thickness，mining height，beam end conditions and so on，how to influence the roof subsidence displacement and supporting resistance，analyzed the relationship between the roof deflection and the length of the mining face，and explained the pressure characteristics of the normal length mining face and the pressure law of the super length mining face. Results show that the elastic foundation calculation model has practical value，it can reveal the supporting resistance of powered support groups，calculate the change of roof deflection and explain the law of roof rock broken.

Key words： mining engineering powered support longwall mining face elastic foundation beam face length

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	Articles by authors
	XU Yajun1
	2
	WANG Guofa1
	2

Cite this article:

XU Yajun1,2,WANG Guofa1, et al. Supporting principle and bearing characteristics of hydraulic powered roof support groups[J]. , 2017, 36(S1): 3367-3373.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0706 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS1/3367

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