Deformation mechanism and support measures for stress-induced cracked rock mass of deep coal mine roadway

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 会议论文

	Deformation mechanism and support measures for stress-induced cracked rock mass of deep coal mine roadway
	Lu, Xingli; Liu, Quansheng; Su, Peifang
	2011
会议日期	OCT 10-12, 2010
会议地点	Shanghai, PEOPLES R CHINA
关键词	voronoi micro-mechanical model stress-induced cracked rock mass discontinuum analysis nonlinear large deformation support measures
页码	845-853
英文摘要	Considering the broken status and the characters of strong nonlinear mechanical phenomenon of surrounding rocks in the return airway at the -648 m level in Gubei colliery, a Voronoi micro-mechanical model has been developed to represent the stress-induced cracked rock mass properties in which slip and separation of contacting rock blocks can be estimated. Two-dimensional discontinuum analyses are used to study the deformation and damage process and nonlinear large deformation mechanism of the return airway. Based on the above research, the stepped combined support method is put forward and employed. Through numerical simulation and field monitoring, the support method is analyzed and verificated. It is concluded that the main reason for nonlinear large deformation of roadway is the collapse or sliding of local key blocks, and the Voronoi micro-mechanical model is more illustrative in demonstrating the nonlinear large deformation mechanism of deep roadway. Besides, the applied support scheme is an effective method to control the nonlinear large deformation of broken surrounding rocks, and can ensure the stability of deep roadway.
源文献作者	Jiang, MJ ; Liu, F ; Bolton, M
会议录	GEOMECHANICS AND GEOTECHNICS: FROM MICRO TO MACRO, VOLS 1 AND 2
会议录出版者	CRC PRESS-TAYLOR & FRANCIS GROUP
会议录出版地	BOCA RATON
语种	英语
WOS研究方向	Engineering
WOS记录号	WOS:000291373800128
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4603]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Lu, Xingli,Liu, Quansheng,Su, Peifang. Deformation mechanism and support measures for stress-induced cracked rock mass of deep coal mine roadway[C]. 见:. Shanghai, PEOPLES R CHINA. OCT 10-12, 2010.