动力扰动下单孔夹片式锚具滑移机制研究

doi:10.13722/j.cnki.jrme.2014.1690

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Abstract Coal mining could cause rock collapses and surface subsidence，other underground engineering，such as hydropower chambers and subway tunnels，are noncomparable with the intense disturbance induced by coal mining. In order to study the slip mechanism of wedge and barrel anchorages under dynamic disturbance，this paper takes II82 mining area in Luling coal mine as engineering background. II82 pedestrian rise was subjected to severe disturbance of upper working faces，so the slip mechanism of wedge and barrel anchorages was analyzed from the aspect of dynamic disturbance by using finite difference method software FLAC2D. The results show that in early dynamic disturbance the displacement differences of shallow and deep medium in surrounding rock lead to the anchor cable load reduce，and then it was in tension in the process of reinforcement. The dramatic changes in anchor cable load could not make the anchor cable pre-tightening like constant loading，on the contrary，the anchorage was broken by instant slip. The problem of anchorage slip under dynamic disturbance could be effectively solved by combining extrusion anchorage and screw anchorage，and it was successfully applied in Luling coal mine

Key words： mining engineering wedge and barrel anchorage slip mechanism dynamic disturbance

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	Articles by authors
	MA Zhenqian1
	JIANG Yaodong2
	3
	YANG Yingming1
	ZHANG Kexue1

Cite this article:

MA Zhenqian1,JIANG Yaodong2,3, et al. Slip mechanism of wedge and barrel anchorages under dynamic disturbance[J]. , 2016, 35(S1): 3042-3050.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1690 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS1/3042

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