| 小湾水电站坝址区低高程岸坡表生改造特征及机制研究 |
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| 引用本文： | 林锋,黄润秋,裴钻,吴琦,高政.小湾水电站坝址区低高程岸坡表生改造特征及机制研究[J].工程地质学报(英文版),2009,17(6):802-808. |
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| 作者姓名： | 林锋 黄润秋 裴钻 吴琦 高政 |
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| 作者单位： | 成都理工大学地质灾害防治和地质环境保护国家重点实验室|成都:610059 |
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| 摘 要： | 摘要:小湾水电站坝基、水垫塘边坡及低高程排水洞系统广泛地揭示了低高程岸坡的地质特征。基于现场调查和二维弹塑性有限元分析，深化认识了低高程岸坡表生改造特征:（1）它是在建造和构造改造的基础上进行的:原构造缓倾角节理扩展、错动；陡倾角节理扩展、产状改变以及错动；新生了大量中缓倾角裂隙；表生改造程度向坡内减弱。（2）建立了低高程岸坡表生改造缓裂生成机制模型，分析了其生成过程。（3）在二维弹塑性有限元分析中，基于拉破坏区分布、剪应变和点安全度等指标，分析了低高程岸坡卸荷松弛范围，其中谷底表生改造明显影响深度为6~9m。
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| 关 键 词： | 关键词: 小湾水电站 低高程岸坡 表生改造 卸荷松弛 弹塑性有限元 |
EXOGENETIC RECONSTRUCTION CHARACTERISTICS AND MECHANISM OF LOWER ELEVATION BANK SLOPE AT DAM SITE OF XIAOWAN HYDROPOWER STATION |
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| LIN Feng HUANG Runqiu PEI Zuan WU Qi GAO Zheng.EXOGENETIC RECONSTRUCTION CHARACTERISTICS AND MECHANISM OF LOWER ELEVATION BANK SLOPE AT DAM SITE OF XIAOWAN HYDROPOWER STATION[J].Journal of Engineering Geology,2009,17(6):802-808. |
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| Authors: | LIN Feng HUANG Runqiu PEI Zuan WU Qi GAO Zheng |
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| Institution: | State Key Laboratory of Geo-hazard Prevention and Geo-environment Protection in Chengdu University of Technology, Chengdu610059 |
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| Abstract: | The geo-characteristics of the lower elevation bank slope of Xiaowan Hydrostation were systematically and widely observed at the foundation of dam,the slope of water-cushion pond and lower elevation drainage galleries. Based on field investigation and 2D finite element analysis of elasticity and plasticity,the exogenetic reconstruction characteristics of lower elevation bank slope were more understood. (1) Its development was based on the reconstruction of rock association and structure,including the stretc... |
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| Keywords: | Xiaowan Hydropower Station Bank slope of lower elevation Exogenetic reconstruction Unloading relaxation Finite element of elasticity and plasticity |
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