| 白川电站隧洞软岩特性与支护型式研究 |
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| 引用本文： | 余侃柱.白川电站隧洞软岩特性与支护型式研究[J].勘察科学技术,2008(6). |
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| 作者姓名： | 余侃柱 |
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| 作者单位： | 甘肃省水利水电勘测设计研究院,兰州市,730000 |
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| 摘 要： | 白川水电站隧洞围岩为碎屑岩,具有岩性软弱,强度低,模量低,遇水后表面易软化、崩解,失水后易干缩开裂,干湿效应显著。该文深刻阐述了白川水电站隧洞白垩系软岩围岩工程地质特性、围岩类别划分,总结了施工中所采用开挖及支护型式、控制围岩稳定的措施和方法。
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| 关 键 词： | 白垩系软岩 隧洞 围岩类别 开挖与支护 |
Study on Characteristics and Supporting Pattern of Soft Rock of Baichuan Hydropower Station Tunnel |
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| Yu Kanzhu.Study on Characteristics and Supporting Pattern of Soft Rock of Baichuan Hydropower Station Tunnel[J].Site Investigation Science and Technology,2008(6). |
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| Authors: | Yu Kanzhu |
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| Affiliation: | Institute for Water Conservancy and Hydropower Investigation and Design of Gansu Province |
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| Abstract: | The surrounding rock of Baichuan hydropower station tunnel is clastic rock with the properties of weak lithology,low strength and low modulus.It is easy to soften and disintegrate while it meets with water.But once the water loss it will shrink and crack soon.That is,there is significant wetting and drying effect.In this paper,the engineering geologic characteristics and classification of surrounding rock of the Cretaceous soft rock of Baichuan hydropower station tunnel are deeply expounded,the pattern of excavating and supporting,the measures and methods in control of the stability of surrounding rock in the course of construction are also summarized. |
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| Keywords: | Cretaceous soft rock tunnel classification of surrounding rock excavation and supporting |
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