| 洞松水电站引水隧洞软质围岩变形分析及工程对策 |
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| 引用本文： | 李叶,李嘉旭,宇天奇,周道平.洞松水电站引水隧洞软质围岩变形分析及工程对策[J].地质灾害与环境保护,2012,23(2):65-70. |
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| 作者姓名： | 李叶 李嘉旭 宇天奇 周道平 |
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| 作者单位： | 1. 四川省水利水电勘测设计研究院,成都,610072
2. 四川省交通厅交通设计研究院,成都,610071 |
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| 摘 要： | 隧洞施工中,软质围岩洞段洞室严重变形,掌子面坍塌.根据该工程特点和开挖洞段技术资料,通过原位测试、试验和监测手段,研究软质围岩变形特征和机理.在此基础上,建议施工遵循短进尺快循环、弱爆破强排水、早封闭强支衬、勤监测速反馈、边开挖边衬砌的施工原则.
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| 关 键 词： | 隧洞施工 软质围岩 变形机理 工程对策 |
DEFORMATION AND ENGINEERING MEASURES FOR SOFT SURROUNDING ROCK IN THE DIVERSION TUNNEL OF DONGSONG HYDROPOWER STATION |
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| Li Ye
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Li Jia-xu
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Yu Tian-qi
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Zhou Dao-ping.DEFORMATION AND ENGINEERING MEASURES FOR SOFT SURROUNDING ROCK IN THE DIVERSION TUNNEL OF DONGSONG HYDROPOWER STATION[J].Journal of Geological Hazards and Environment Preservation,2012,23(2):65-70. |
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| Authors: | Li Ye Li Jia-xu Yu Tian-qi Zhou Dao-ping |
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| Institution: | 1(1.Sichuan Institute of Water Resources & Hydroelectric Investigation and Design,Chengdu 610072,China; 2.Transportation Design Institute of Sichuan Provincial Communications Department,Chengdu 610071,China) |
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| Abstract: | In the construction,severe deformations and working face collapses occur at the segments with soft rock.The deformation characteristics and mechanism are studied by testing in situ,testing and monitoring,according to the project characteristics and technical materials.Construction principles are proposed as to circulate fast with short drilling depth,drain intensively with weak blasting,block earlier with strong support and lining,monitor frequently with quick feedback,and line bricks while excavating. |
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| Keywords: | tunnel construction soft surrounding rock deformation mechanism engineering countermeasures |
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