| 大渡河沙湾水电站厂房深基坑渗流反分析 |
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| 引用本文： | 吴越建,秦俊虹,何勇.大渡河沙湾水电站厂房深基坑渗流反分析[J].四川水力发电,2008,27(6). |
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| 作者姓名： | 吴越建 秦俊虹 何勇 |
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| 作者单位： | 1. 中国水利水电第七工程局有限公司,四川,成都,611730
2. 河海大学,江苏,南京,210098 |
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| 摘 要： | 沙湾水电站工程厂房区地质条件复杂,基岩完整性差,地层中有较厚的夹沙层及岩溶层,覆盖层中存在大量渗漏通道并发育有承压水.为获得较大的发电水头,保证厂房建于基岩上,施工期开挖形成深基坑并导致大量渗水.针对厂房深基坑围堰范围纵横剖面建立了两个有限元模型,对地下水流场及渗透流量等进行了分析研究,论述了沙湾水电站深基坑围堰防渗的处理方法及效果,为类似工程提供参考.
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| 关 键 词： | 沙湾水电站 深基坑 防渗排水 有限元法 渗流量 |
Back Analysis on Seepage Flow in Deep Foundation Pit of Powerhouse at Shawan Hydropower Station on Dadu River |
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| WU Yue-jian,QIN Jun-hong,HE Yong.Back Analysis on Seepage Flow in Deep Foundation Pit of Powerhouse at Shawan Hydropower Station on Dadu River[J].Sichuan Water Power,2008,27(6). |
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| Authors: | WU Yue-jian QIN Jun-hong HE Yong |
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| Affiliation: | WU Yue-jian1 QIN Jun-hong2 HE Yong1(1.Sinohydro Engineering Bureau 7 Corporation,Chengdu,Sichuan,611730,China,2.Hehai University,Nanjing,Jiangsu,210098,China) |
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| Abstract: | In powerhouse area at Shawan hydropower station,geological conditions are complex.Bedrock integrity is poor,the rock mass is interbedded with thick sand layer and karstic formation,considerable seepage paths with confined water exist in overburden.To gain greater water head for power generation and ensure powerhouse to be founded on bedrock,considerable seepage water is caused by deep excavation of foundation pit during construction stage.Two finite element models are developed for longitudinal and cross se... |
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| Keywords: | Shawan hydropower station deep foundation pit watertight water drainage finite element method seepage volume |
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