| 断层产状对围岩稳定性影响的敏感度分析 |
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| 引用本文： | 牛岩,张继勋,任旭华.断层产状对围岩稳定性影响的敏感度分析[J].三峡大学学报(自然科学版),2013(5):16-20. |
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| 作者姓名： | 牛岩 张继勋 任旭华 |
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| 作者单位： | 河海大学水利水电学院,南京210098 |
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| 基金项目： | 河海大学水文水资源与水利工程科学国家重点实验室开放基金（2011491211）;国家科技支撑计划课题（2012BAK03804） |
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| 摘 要： | 岩体裂隙及断层破碎带等地质结构面对地下洞室围岩稳定性具有重要的影响,断层破碎带与洞轴线的相对空间位置是一关键因素.以西南某水电站导流洞为工程背景,采用数值模拟手段来研究断层走向及倾角对隧洞围岩稳定的影响.计算结果表明:断层走向越小,倾角越大,洞周围岩的稳定性越好;应加强断层附近洞顶和洞底的支护措施.研究成果可以为类似工程的布置和设计提供理论依据.
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| 关 键 词： | 隧洞 围岩稳定 断层 参数 敏感性分析 |
Sensitivity Analysis of Impacts of Fault Parameters on Stability of Surrounding Rock Mass |
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| College of Water Conservancy ＆ Yan Zhang Jixun Ren Xuhua.Sensitivity Analysis of Impacts of Fault Parameters on Stability of Surrounding Rock Mass[J].Journal of China Three Gorges University(Natural Sciences),2013(5):16-20. |
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| Authors: | College of Water Conservancy ＆ Yan Zhang Jixun Ren Xuhua |
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| Institution: | Hydropower Engineering, Hohai Univ. , Nanjing 210098, China) |
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| Abstract: | Geological structure planes such as rock mass fracture and fault fracture zone have important im- pacts on the stability of surrounding rocks of underground openings. The relative spatial position of fault frac- ture zone and the tunnel axis is a critical factor. Based on a river diversion tunnel of a hydropower station in Southwest China, this paper studies the impacts of fault dip direction and fault dip angle on the stability of surrounding rock mass. The research results show that the stability of surrounding rocks is better when the fault dip direction and fault dip angle are smaller. It＇s important to strengthen the support measures of the tunnel bottom and roof near the fault. The research results can provide theoretical basis for the design and ar- rangement of similar projects. |
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| Keywords: | tunnel surrounding rock stability fault parameter sensitivity analysis |
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