| 某水电站坝区高地应力释放现象及成因研究 |
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| 引用本文： | 赵青,赵其华,彭社琴,陈近中,黄河清.某水电站坝区高地应力释放现象及成因研究[J].地球科学进展,2009,24(6):636-642. |
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| 作者姓名： | 赵青 赵其华 彭社琴 陈近中 黄河清 |
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| 作者单位： | 1. 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川,成都,610059;贵州大学土木建筑工程学院,贵州,贵阳,550003
2. 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川,成都,610059 |
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| 基金项目： | 四川省杰出青年学科带头人培养计划项目 |
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| 摘 要： | 针对坝区特定的高应力条件下岩体的应力释放现象,包括岩芯饼裂和勘探平硐岩爆发育普遍的特征,在统计分析的基础上,从力源条件-区域构造背景和地质构造条件、能力存储条件-岩性特征和岩体结构条件、后期演化-能量释放、转换与调整等分析的基础上,结合坝区地应力场分布的特征阐述了坝址区高地应力成因,认为坝区高地应力释放现象是上述各因素综合作用的结果.为地下厂房开挖过程中的岩爆预测和控制提供了有力的参考依据.
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| 关 键 词： | 高地应力 岩芯饼裂 岩爆 地质背景 地质构造 岩体结构 应力集中 |
A Study of Causes of High Ground Stress Release in the Area of a Hydropower Station Dam |
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| ZHAO Qing,ZHAO Qihua,PENG Sheqin,CHEN Jinzhong,HUANG Heqing.A Study of Causes of High Ground Stress Release in the Area of a Hydropower Station Dam[J].Advance in Earth Sciences,2009,24(6):636-642. |
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| Authors: | ZHAO Qing ZHAO Qihua PENG Sheqin CHEN Jinzhong HUANG Heqing |
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| Institution: | 1.State Key Laboratory of Geohazards Prevention and Geoenvironment Protectation,Chengdu University of Technology, Chengdu 610059,China; 2.College of Civil Engineering, Guizhou University, Guiyang 550003, China |
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| Abstract: | Based on statistical analysis of disced rock cores and rockburst about rock mass in exploration adit at the dam site where high ground stressis surrounded the causes of high ground stress are discussed in many respects,combined with characteristics of ground stress field,including the power source condition which is the regional tectonic setting and geological conditions,power storage conditions which is characteristic of lithology and structure of rock mass,power transformation and adjustment which is late... |
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| Keywords: | High ground stress Disced rock cores Rockburst Tectonic setting Geological conditions Rock mass structure Stress concentration |
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