| 双层堤基中悬挂式防渗墙渗控效果的试验研究 |
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| 引用本文： | 丁留谦,姚秋玲,孙东亚,刘昌军,周晓杰.双层堤基中悬挂式防渗墙渗控效果的试验研究[J].水利水电技术,2007,38(2):23-26. |
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| 作者姓名： | 丁留谦 姚秋玲 孙东亚 刘昌军 周晓杰 |
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| 作者单位： | 1. 中国水利水电科学研究院,北京,100038
2. 清华大学,水利水电工程系,北京,100084 |
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| 基金项目： | 水利部科技创新项目;水利部科技攻关项目 |
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| 摘 要： | 通过砂槽模型试验,研究了双层堤基设置悬挂式防渗墙情况下管涌发展并导致溃堤的过程和机理。试验结果表明,悬挂式防渗墙可以有效提高堤基管涌破坏的水平平均临界水力比降,降低管涌的危害程度,使堤基整体抵抗管涌破坏的能力显著提高,且布置在背水侧较临水侧更加有效。同时给出了悬挂式防渗墙的设计方法。
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| 关 键 词： | 堤基 悬挂式防渗墙 管涌 模型试验 渗控效果 |
| 文章编号： | 1000-0860(2007)02-0023-04 |
| 修稿时间： | 12 12 2006 12:00AM |
Experimental studies on the seepage control effects of suspended cutoffs |
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| DING Liu-qian,YAO Qiu-ling,SUN Dong-ya,LIU Chang-jun,ZHOU Xiao-jie.Experimental studies on the seepage control effects of suspended cutoffs[J].Water Resources and Hydropower Engineering,2007,38(2):23-26. |
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| Authors: | DING Liu-qian YAO Qiu-ling SUN Dong-ya LIU Chang-jun ZHOU Xiao-jie |
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| Affiliation: | 1. China Institute of Water Resources and Hydropower Research, Beijing 100038, China; 2. Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Flume model tests are carried out to study the development processes of piping and its mechanism. From the tests, it can be concluded that suspended cutoffs can effectively increase the average critical horizontal seepage gradient of dike foundation and decrease the risk of piping. This type of cutoff can increase the integrated resistance of dike foundation against piping. It will be more effective when the cutoff is placed in landside than in riverside. Design methods for suspended cutoffs are suggested. |
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| Keywords: | dike foundation suspended cutoff piping physical model test seepage control effect |
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