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地球科学进展  2009, Vol. 24 Issue (6): 636-642    DOI: 10.11867/j.issn.1001-8166.2009.06.0636
研究论文     
某水电站坝区高地应力释放现象及成因研究
赵  青1,2,赵其华1,彭社琴1,陈近中1,黄河清1
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;2.贵州大学土木建筑工程学院,贵州  贵阳  550003
A Study of Causes of High Ground Stress Release in the Area of a Hydropower Station Dam
Zhao Qing1,2, Zhao Qihua1,Peng Sheqin1,Chen Jinzhong1,Huang Heqing1
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
 全文: PDF(2360 KB)  
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。
 

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    
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 reformation of rock mass. It is considered that high ground stress release is synthetical result caused by factors mentioned above. It provides the powerful reference for the prediction and control of rockburst in the excavation of underground powerhouse.

 

Key words: High ground stress    Disced rock cores    Rockburst    Tectonic setting    Geological conditions    Rock mass structure    Stress concentration.
收稿日期: 2008-12-22 出版日期: 2009-06-10
:  P642  
基金资助:

四川省杰出青年学科带头人培养基金项目“开发边坡卸荷机理”(编号:04-zq026-016)资助.

通讯作者: 赵青     E-mail: zhaoq330@163.com
作者简介: 赵青(1978-),女,贵州盘县人,博士生,主要从事边坡工程、地质灾害评价与治理工程设计等领域的科研、教学工作.E-mail:zhaoq330@163.com
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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.

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. Advances in Earth Science, 2009, 24(6): 636-642.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2009.06.0636        http://www.adearth.ac.cn/CN/Y2009/V24/I6/636

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