围岩破坏特征与地应力方向关系研究

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Abstract Considering practical engineering needs，the classification standard of spalling is established；and a related method for speculating the principal stress direction by the development position and development degree of spalling is proposed. Meanwhile，combining laboratory tests，biopsy scanning and other means，the generated mechanism of tensile crack on spalling face is deeply studied；and a related method for determining initial geostress directions by extended direction of tensile crack is also given. Finally，taking a hydropower project in southwest China for example，on the basis of the investigate and research results of spalling and tensile crack at dam site，principal stress direction and its variations are speculated，which forms the effective complement to geostress test and provides strong support for the later engineering designs.

Key words： rock mechanics geostress surrounding rock failure spalling tensile crack engineering application

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	Articles by authors
	ZHANG Yihu
	LU Yiran
	ZHOU Huoming
	ZHONG Zuowu

Cite this article:

ZHANG Yihu,LU Yiran,ZHOU Huoming, et al. STUDY OF RELATIONSHIP BETWEEN FAILURE PROPERTIES OF SURROUNDING ROCK AND DIRECTION OF GEOSTRESS[J]. , 2010, 29(S2): 3526-3535.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/3526

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