| 水平薄层岩体中大跨度地下洞室工程地质研究 |
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| 引用本文： | 李院忠,王少川,孙莉萍,齐俊修.水平薄层岩体中大跨度地下洞室工程地质研究[J].岩土力学,2014,35(8):2361-2366. |
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| 作者姓名： | 李院忠 王少川 孙莉萍 齐俊修 |
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| 作者单位： | 中国水电顾问集团北京勘测设计研究院有限公司，北京 100024 |
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| 摘 要： | 山西西龙池抽水蓄能电站地下厂房围岩为水平薄层岩层,工程竣工发电已多年,施工及运行期安全,但工程开工前,还没有在水平薄层岩体中开挖大跨度高边墙地下洞室的成功范例,鉴于此,以山西西龙池抽水蓄能电站工程为依托,从工程地质角度,对水平薄层围岩岩性特征、岩体结构特征、岩体力学特性、大跨度高边墙地下洞室围岩分类、围岩变形特征等方面进行了研究,依据研究成果,对洞室开挖支护施工、围岩变形监测等进行了分析,依据围岩变形监测成果对围岩力学参数进行了反演,验证了前期勘察成果,取得了在水平薄层状地质环境中开挖大型地下洞室的宝贵经验,进而为在水平薄层状地质体中修建大跨度、高边墙地下洞室提供了更多的技术支持,对此类不良地质条件下大型地下洞室群建设具有重要的指导意义。
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| 关 键 词： | 水平薄层岩体 大跨度地下洞室 地下厂房 工程地质研究 |
| 收稿时间： | 2014-03-27 |
Engineering geological research on large span underground cavern in horizontal thin layered rock mass |
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| LI Yuan-zhong,WANG Shao-chuan,SUN Li-ping,QI Jun-xiu.Engineering geological research on large span underground cavern in horizontal thin layered rock mass[J].Rock and Soil Mechanics,2014,35(8):2361-2366. |
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| Authors: | LI Yuan-zhong WANG Shao-chuan SUN Li-ping QI Jun-xiu |
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| Institution: | HydroChina Beijing Engineering Corporation Limited, Beijing 100024, China |
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| Abstract: | The surrounding rock of underground powerhouse of Xilongchi pumped storage power station in Shanxi is horizontal thin layered, the project has been completed and in operation for many years, it is safe during construction and operation, but before the project starts, there was no successful example for excavation of underground cavern with large span and high side wall in horizontal thin layered. In view of this, this paper based on the project of Xilongchi pumped storage power station, studied the horizontal thin surrounding rock from the view of engineering geology, such as lithology characteristics, structure characteristics of rock mass, mechanical characteristics of rock mass, rock classification of underground cavern with large span and high side wall, deformation characteristics of surrounding rock and so on; according to the research results, excavation and supporting of cavern construction and deformation monitoring of surrounding rock was analysized; mechanics parameters of surrounding rock are inverted on the basis of deformation monitoring results. It verified the previous investigation results and made valuable experience of large underground cavern excavation in horizontal thin bedded geological environment, and provided more technical support for construction of large span underground cavern in the horizontal thin layered geological bodies, has an important guiding significance for large underground caverns construction under this kind of adverse geological conditions. |
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| Keywords: | horizontal thin layered rock mass large span underground cavern underground powerhouse engineering geological research |
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