长江科学院院报 ›› 2016, Vol. 33 ›› Issue (5): 145-150.DOI: 10.11988/ckyyb.20151068

• 第八届全国水利工程渗流学术研讨会专栏 • 上一篇    下一篇

兴隆水利枢纽坝基渗流控制研究

朱国胜1a,1b, 张家发1a,1b, 刘小江2, 李少龙1a,1b   

  1. 1.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;
    2.长江勘测规划设计研究有限责任公司,武汉 430010
  • 收稿日期:2015-12-15 出版日期:2016-05-01 发布日期:2016-05-10
  • 作者简介:朱国胜(1972-),男,湖北荆州人,教授级高级工程师,主要从事水工渗流及地下水环境研究,(电话)027-82927243(电子信箱)aazhuu@126.com。
  • 基金资助:
    国家自然科学基金项目(41402213);中央级公益性科研院所基本科研业务费(CKSF2014055YT,CKSF2014058YT);中国地质大学教育部长江三峡库区地质灾害研究中心开放性基金(TGRC201403)

Seepage Control Measures for the Foundation of Xinglong Hydropower Project

ZHU Guo-sheng1,2, ZHANG Jia-fa1,2, LIU Xiao-jiang3, LI Shao-long1,2   

  1. 1.Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Yangtze River Scientific Research Institute,Wuhan 430010,China;
    2.National Research Center for Dam Safety Technology, Yangtze River Scientific Research Institute,Wuhan 430010,China;
    3.Changjiang Institute of Survey, Planning, Design and Research, Wuhan 430010, China
  • Received:2015-12-15 Published:2016-05-01 Online:2016-05-10

摘要: 由于兴隆水利枢纽大坝坝基存在深厚的强透水粉细砂层和砂砾石层,坝基的渗透稳定性及渗漏问题成了需要重点研究的课题。对厂房坝段和泄水闸坝段坝基进行了三维渗流计算分析,着重对比分析了不同渗控措施的效果。结果表明,在设计水位条件下,采用一定的渗控措施可以使坝基粉细砂出逸坡降≤0.30;当考虑下游水位下降时,厂房坝段尾水渠粉细砂出逸坡降将>0.30,泄水闸坝段粉细砂出逸坡降将>0.20,但<0.30,粉细砂的渗透稳定更依赖于反滤保护。

关键词: 兴隆水利枢纽, 渗流控制, 三维渗流计算, 渗透系数, 出逸坡降

Abstract: Due to deep buried silty fine sand and sand gravel layers of strong permeability in the foundation of Xinglong hydropower project, the stability and seepage problem of the dam foundation are of great concern. By means of 3-D seepage analysis for the foundation of powerhouse segment and sluice segment, we compared the effects of different seepage control measures. Results reveal that under design water level condition, the exit gradient of foundation’s fine sand can be controlled less than 0.30 by taking some seepage control measures. When the downstream water level descents, the exit gradient of foundation fine sand will be larger than 0.30 behind the tail channel of powerhouse, and between 0.20 and 0.30 behind the sluice dam. The seepage stability of foundation fine sand is more relied on filter protection.

Key words: Xinglong hydropower project, seepage control, 3-D seepage analysis, coefficient of permeability, exit gradient

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