长江科学院院报 ›› 2014, Vol. 31 ›› Issue (6): 48-52.DOI: 10.3969/j.issn.1001-5485.2014.06.0102014, 31(06):48-52

• 岩土工程 • 上一篇    下一篇

缅甸伊江上游某水电站坝基渗控效果研究

李洪斌1, 2b, 崔皓东2a, 2b, 张家发2a, 2b, 朱国胜2a, 2b   

  1. 1.长江勘测规划设计研究有限责任公司, 武汉 430010;
    2.长江科学院 a.水利部岩土力学与工程重点实验室;b.国家大坝安全工程技术研究中心, 武汉 430010
  • 收稿日期:2013-04-27 修回日期:2014-06-06 出版日期:2014-06-01 发布日期:2014-06-06
  • 作者简介:李洪斌(1970-), 男, 河南安阳人, 高级工程师, 主要从事水工基础处理及输电塔基设计工作, 027-82828889-88898, jangy1974@sina.com。
  • 基金资助:
    国家“十二五”支撑计划课题(2011BAB10B04);国家自然科学基金项目(51279016);中央级公益性科研院所基本科研业务费项目(CKSF2012023/YT;CKSF2014058/YT)

Seepage Control Effectiveness for Gravity Dam Foundationin the Upstream of Irrawaddy River in Burma

LI Hong-bin1, 3, CUI Hao-dong2, 3, ZHANG Jia-fa2, 3, ZHU Guo-sheng2, 3   

  1. 1.Changjiang Institute of Survey, Planning, Design and Research, Wuhan 430010, China;
    2.Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Yangtze River Scientific Research Institute, Wuhan 430010, China;
    3.National Research Center forDam Safety Technology, Yangtze River Scientific Research Institute, Wuhan 430010, China
  • Received:2013-04-27 Revised:2014-06-06 Online:2014-06-01 Published:2014-06-06

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摘要： 对于有断层带存在的坝基, 其防渗帷幕和密集排水孔幕的效果是水利水电工程安全的关键问题之一。针对伊江上游某重力坝基础, 利用三维渗流场有限元精细求解技术, 建立了伊江上游某坝基渗流场计算模型, 分析了断层带范围内防渗帷幕失效和坝基排水孔不同间距条件下的渗控效果。成果表明断层带范围内防渗帷幕失效, 坝基渗流量增大, 但扬压力折减系数仍满足设计要求;排水孔幕间距扩大1倍, 渗控效果并无明显变化。成果可为类似坝基渗控设计提供参考依据。

关键词: 重力坝坝基, 防渗帷幕, 排水孔, 渗控效果, 有限元

Abstract: The effect of impervious curtain and intensive drainage holes in the dam foundation with fault is a key problem in hydro-electric engineering. By employing three-dimensional finite element, a seepage model is proposed with a gravity dam foundation in the upstream of Irrawaddy River as case study. The seepage control effect in the presence of failed impervious curtain or different spacings of drainage holes is analyzed. Results indicated that when the impervious curtain in the fault failed, the discharge increased but the reduction coefficient of uplift pressure met the design requirement; and when the spacing between drainage holes doubles, the seepage control effect did not change significantly. The research result could be a reference for similar designs of seepage control for dam foundation.

Key words: gravity dam foundation, impervious curtain, drainage holes, seepage control effect, finite element

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