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滨海地区平原水库均质土坝挡水水头虽较低,但由于坝基地层由陆相和海相沉积共同构成,土层性状复杂,应重视坝基防渗的问题。本文通过对胜利油田孤河水库围坝的坝基渗漏原因分析,认为坝基浅层存在透水性较强的贝壳夹砂层是水库渗漏的主要原因;经对坝基防渗措施后的原型观测分析,得出垂直铺塑截渗是一种技术可靠、经济合理的防渗措施的结论。
Although the water head of the homogeneous earth dam of the plain reservoir in the coastal area is relatively low, the dam foundation should pay attention to the seepage prevention of the dam foundation due to the complex formation of the facies and the marine sediments. Based on the analysis of the dam foundation seepage in the dam of the Goupu Reservoir in Shengli Oilfield, it is considered that the sand permeable shell sand in the shallow layer of the dam foundation is the main reason for reservoir seepage. After the prototype observation and analysis of the dam foundation seepage control measures It is concluded that the vertical plastic interception is a reliable and economical anti-seepage measure.