剪切荷载下贯通结构面应变能演化机制研究

doi:10.13722/j.cnki.jrme.2015.0833

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Abstract The strain energy evolution of penetrative rock joints under shear loading was investigated to better understand the mechanical behavior of rock mass. To effectively investigate the stability of rock mass，laboratory direct shear tests and numerical simulation on rock joint samples collected from the Jiweishan landslide at Wulong in Chongqing were conducted to obtain the strain energy evolution during the shear failure. Energy accumulation was found to mainly occur on the surface of penetrative rock joints，wherein the areas within rock joints facing the shear direction had higher strain energy and contributed more to the resistance of shear failure. Energy absorption happened with the increasing of elastic strain energy before the shear stress reaching the peak value. When the peak shear stress was reached，those tiny contacting places were damaged and the energy accumulated was translated into the energy liberation associated with the decreasing of the elastic strain energy. Additionally，the energy evolution varied from places to places. The friction may occur repeatedly in the center of the rock joint，accordingly，the energy absorption and liberation may take place alternately. Numerical simulated results matched well with the temperature distribution obtained through infrared thermal imaging，which indicated that the numerical simulation method used to estimate the energy evolution in this paper was accurate and reliable.

Key words： rock mechanics penetrative rock joints shear loading strain energy evolution 3D laser scanning infrared thermal imaging 3DEC numerical simulation

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	Articles by authors
	GE Yunfeng1
	TANG Huiming1
	WANG Liangqing1
	XIONG Chengren2
	ZHANG Shen1
	WANG Dingjian1

Cite this article:

GE Yunfeng1,TANG Huiming1,WANG Liangqing1, et al. Strain energy evolution of penetrative rock joints under shear loading[J]. , 2016, 35(6): 1111-1121.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.0833 OR http://www.rockmech.org/EN/Y2016/V35/I6/1111

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