基于潜在挤压比的地下工程软岩挤压程度评价方法研究

doi:10.13722/j.cnki.jrme.2015.0886

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Abstract The squeezing deformation of soft rock is a problem in construction of the deep buried or high stress underground caverns in soft rock. The scientific evaluation of the squeezing degree is very important to the stability control of surrounding rock，but the existing methods of stress and deformation evaluation neglect the difference of rock deformability. After the basic concepts of the squeeze and its geological conditions were made clear，the test data of some types of rock was analyzed，which revealed the huge differences in the rock deformability. The potential squeezing ratio index based on the above understanding was put forward in the paper which was confirmed to be good to describe the individual differences. The definitions and criteria of the existing evaluation methods were summarized and analyzed. The obvious deviation of evaluation results based on the widely recognized Hoek?s method was due to the ignoring of rock?s individual differences. The Hoek?s method was thus modified based on the potential squeezing ratio and the evaluation method of squeezing degree based on the potential squeezing ratio was suggested.

Key words： rock mechanics squeezing soft rock evaluation of squeezing degree strength-stress ratio individual differenc

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	ZHANG Chuanqing
	ZHOU Hui
	ZHU Yong
	YANG Fanjie

Cite this article:

ZHANG Chuanqing,ZHOU Hui,ZHU Yong, et al. An evaluation method of squeezing degree based on potential squeezing ratio[J]. , 2016, 35(5): 939-947.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.0886 OR http://www.rockmech.org/EN/Y2016/V35/I5/939

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