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Law of Geo-stress Distribution in the Vicinity of Fault Zone
Author(s): ZHOU Chun-hua, YIN Jian-min, LUO Jian-yu, XIAO Guo-qiang
Pages: 57-
61
Year: 2012
Issue:
7
Journal: Journal of Yangtze River Scientific Research Institute
Keyword: 水压致裂法; 地应力; 断层构造; 稳定性;
Abstract: 通过分析几个典型断层构造近场水压致裂法地应力实测案例,结合构造地质力学及特性,得出近场断层构造地应力量值和方位主要受构造的空间分布、运动机制及其岩性影响的结论.一般而言,地应力量值在沿断层埋深方向上有不同梯度的分带,这与断层构造的剪切破裂形成机制及其影响带内岩性有关;最大水平主应力方位受断层构造的空间分布及运动机制影响,大致呈现与断裂走向平行或大角度斜交,甚至垂直的规律.分析断层构造近场地应力的分布有助于工程区岩体稳定性的科学评价,为工程选址提供依据.
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