| 构皮滩水电站尾水隧洞软岩段开挖及一期支护方案综述 |
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| 引用本文： | 陈杰,李世文.构皮滩水电站尾水隧洞软岩段开挖及一期支护方案综述[J].水电勘测设计,2007(4):34-37. |
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| 作者姓名： | 陈杰 李世文 |
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| 作者单位： | 中国水电顾问集团中南勘测设计研究院,湖南长沙410014 |
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| 摘 要： | 构皮滩水电站尾水隧洞软岩洞段、破碎洞段较长，且岩体开挖后自稳时间短，开挖支护期的安全稳定问题是工程施工的关键。实际施工过程中，通过采取合理的支护手段，有效地解决了尾水隧洞软岩段开挖支护期的安全稳定问题。本文对尾水隧洞软岩段支护进行了较为详细的介绍，可供同类工程借鉴和参考。
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| 关 键 词： | 构皮滩水电站 尾水隧洞 软岩 一期支护 钢拱架回填块石压浆 |
Review of excavation of soft - rock section of tailrace tunnel of Goupitan hydropower project and its alternative of first - stage supporting |
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| Authors: | Chen Jie Li Shiwen |
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| Affiliation: | Mid- south design and research institute , CHECC. Changsha, 410014, China |
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| Abstract: | In the tailrace tunnel of Goupitan hydropower project, there is a comparative long soft - rock section and a long broken section, and the self- stabling time of rock mass after excavation is short. Safety and stability during the excavation and supporting period is a key of project construction. During the construction, the problem of safety and stability of soft - rock section of tailrace tunnel during excavation and supporting period is effectively solved by adopting reasonable supporting measures. The paper introduces the supporting of soft - rock section of tailrace tunnel in detail, which can be referred by the engineers of the similar projects. |
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| Keywords: | Goupitan hydropower project tailrace tunnel soft rock the first - stage supporting mud jacking by the back -filling block stone of steel arch frame |
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