[1]何秉顺,丁留谦,刘昌军.面板砂砾石坝异常渗流及破坏机制探讨[J].自然灾害学报,2009,(06):141-145.
 HE Bing-shun,DING Liu-qian,LIU Chang-jun.Research on abnormal seepage and failure mechanism of faced rockfill dam[J].,2009,(06):141-145.
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面板砂砾石坝异常渗流及破坏机制探讨
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2009年06期
页码:
141-145
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Research on abnormal seepage and failure mechanism of faced rockfill dam
作者:
何秉顺 丁留谦 刘昌军
中国水利水电科学研究院防洪减灾研究所, 北京 100038
Author(s):
HE Bing-shun DING Liu-qian LIU Chang-jun
Chinese Institute of Water Resources and Hydropower Research, Beijing 100038, China
关键词:
面板砂砾石坝非饱和土三维渗流场
Keywords:
faced rockfill damunsaturated soil3D seepage field
分类号:
TV698.2+3
摘要:
利用非饱和土渗流理论,对沟后面板砂砾石坝进行了三维渗流场分析.通过渗流计算表明:渗注场受面板纵向缝止水失效的影响不大,仅仅呈现垂直入渗的特征.面板顶部与防浪墙接缝止水失效单独作用时仅能饱和坝体顶部小范围土体.面板在一定范围与坝体脱开、坝体填料渗流性质各向异性、库水位漫过防浪墙底板,这些异常情况的组合导致了坝体渗透破坏.异常状态渗流发生时,坝体顶部区域饱和,而坝体中部仍存在非饱和区,坝体下部饱和区相应点处孔隙水压力值则无明显提高.
Abstract:
The 3D seepage analyses of Gouhou faced rockfill dam was conducted using unsaturated soil seepage theory.The conclusions are that:the watertight invalidation of longitudinal joint would not affect much on the seepage field of the dam and it would only lead to a vertical direction seepage.The crack between the slab and the wave wall would only saturate a small scale soil nearby.combination of several abnormal cases including the separation between the slab and dam,the hydraulic anisotropy of dammaterial and the water level over the bottom of the wave wall leads to the seepage failure of the dam.When the abnormal seepage happens,the unsaturated zone still exists in middle part of the dam,while the value of porepressure in the saturated zone of the bottom dam does not increase obviously.

参考文献/References:

[1] 刘杰,丁留谦,缪良娟,杨凯宏.沟后面板砂砾石坝渗流溃坝模型试验研究(一)[R].//沟后水库砂砾石面板坝的失稳机理分析.北京:中国水利水电科学研究院,1996:1-10.
[2] 茹履安,韩练兵,黄丽清等.沟后水库砂砾石面板坝的失稳机理的离心模拟试验研究[R].//沟后水库砂砾石面板坝的失稳机理分析.北京:中国水利水电科学研究院,1996:32-57.
[3] 陈祖煜.土质边坡稳定分析-原理、方法、程序[M].北京:中国水利水电出版社,2003:321-325.
[4] 陈群,张利民.填料分层对砂砾石坝渗流场的影响[J].岩土工程学报,2006,28(2):179-183.
[5] Fredlund D G,Rahardjo H.Soil Mechanics for Unsaturated Soils[M].New York:John Wiley & Sons,Inc,1993
[6] 刘杰,缪良娟.大坝砂砾料的力学特性试验研究[M]//沟后水库砂砾石面板坝-设计、施工、运行与失事.北京:中国水利水电出版社,1996:18-25
[7] Van Genuchten M T.Aclosed form equation for predicting the hydraulic conductivity of unsaturated soils[J].Soil Science Society of America Journal,1980,44:892-890.
[8] 李雷,盛金保,李君纯,等.沟后面板砂砾坝破坏机理及溃决过程研究[R].南京:南京水利科学研究院,1996.
[9] 丁留谦,刘杰,缪良娟,杨凯宏.沟后面板砂砾石坝异常渗流原因分析[R].//沟后水库砂砾石面板坝的失稳机理分析.北京:中国水利水电科学研究院,1996:86-100.

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备注/Memo

备注/Memo:
收稿日期:2008-07-21;改回日期:2009-05-16。
基金项目:水利部“948”项目(200124)
作者简介:何秉顺(1980- ),男,博士研究生,主要从事边坡稳定分析研究.E-mail:hebs@iwhr.com
更新日期/Last Update: 1900-01-01