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一、概述 铜街子电站左岸堆石坝基础深槽覆盖层厚达70余米,为解决深槽段堆石坝的基础防渗与承重问题,设计采用两道承重式防渗墙,其受力条件非常复杂(详见本刊1986年第三、四期)。 土工建筑物的应力和变形是土体自身重量所引起,用原型尺寸进行试验,难以实现,故采用离心模型,利用离心力加大材料的自重,使小的物理模型能模拟原型的应力、变形等性状。 为论证堆石坝施工完建、蓄水等不同情况下,坝体、坝基、混凝土防渗墙和挡墙等各
I. Overview The thickness of the foundation deep trench cover of the left bank rockfill dam of Tongjiezi Hydropower Station is more than 70 meters. To solve the problem of foundation seepage prevention and load-bearing of deep-groove rockfill dam, two load- Force conditions are very complex (see journal third 1986, period). The stress and deformation of the geotechnical structures are caused by the weight of the soil body. Experiments with the prototype size are difficult to realize. Therefore, the centrifugal model is used to increase the self-weight of the material by means of centrifugal force so that the small physical model can simulate the stress and deformation of the prototype. Traits. To demonstrate the completion of construction of rockfill dam, water storage and other different circumstances, the dam, dam foundation, concrete cutoff walls and retaining walls, etc.