| 双层堤管涌的悬挂型防渗控制实验研究 |
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| 引用本文： | 李更杰.双层堤管涌的悬挂型防渗控制实验研究[J].地下水,2019(3):212-214. |
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| 作者姓名： | 李更杰 |
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| 作者单位： | 辽宁省沈阳市昌图县八面城水利站 |
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| 摘 要： | 双层堤基是应用较多的双面层的堤基构造类型,上层为弱透水层,下层为强透水深厚砂层。堤内弱透水层在汛期高水位时面临较高的水头承压,出现管涌的危险性极大。以实验室模拟分析的方式,专题探究双层堤管涌的悬挂型防渗控制规律,结果可知:悬挂型防渗墙在有效截断管涌迁移路径方面具有独特功能和阻滞效果,管涌没有出现之前,悬挂式防渗墙消解水头冲刷的作用一般不很明显,而一旦有管涌发生,防渗墙对透水堤基深入越深,防渗作用将越好,如果保持贯入度相同,则下游布置防渗墙比上游布置防渗墙效果要好。研究结果为同类工程应用提供研究和技术参考。
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| 关 键 词： | 双层堤 管涌 防渗控制 悬挂型 模拟实验 分析研究 |
Experimental study on suspension type anti-seepage control of double dick piping |
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| LI Geng-jie.Experimental study on suspension type anti-seepage control of double dick piping[J].Groundwater,2019(3):212-214. |
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| Authors: | LI Geng-jie |
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| Institution: | (Bamian City Water Conservancy Station, Changtu County, Shenyang City, Liaoning Province, Changtu , Liaoning 1125000, China) |
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| Abstract: | The double dick foundation is a type of foundation structure with a double-sided layer that is applied more, the upper layer is a weakly permeable layer, and the lower layer is a strong permeable deep sand layer. The weak permeable layer in the dike faces a high head pressure during the high water level in the flood season, and the risk of piping is extremely high. In the way of experimental simulation analysis, the suspensiontype anti-seepage control law specializing in doubledick piping. The results show that the suspended anti-seepage wall has unique functions and retarding effects in effectively intercepting the pipe migration path. Before the pipe is not present, the effect of the suspended anti-seepage wall to eliminate head scouring is generally not obvious. Once a pipe burst occurs, the anti-seepage wall will penetrate deeper and deeper into the permeable foundation, and the anti-seepage effect will be better. If the penetration degree is the same, the downstream arrangement will be prevented. The anti-seepage wall is better than the upstream placement of the anti-seepage wall. The research results provide research and technical reference for similar engineering applications. |
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| Keywords: | Double levee piping anti-seepage control suspension type simulation experiment analysis and research |
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