荒沟抽水蓄能电站上库主坝基础粘土质砂层试验研究

Main dam foundation of clayey sand test research of Huanggou pumped-storage power

荒沟抽水蓄能电站工程建设中主坝回填和副坝防渗均需要粘土土料。作为坝基的主要土层,粘土质砂广泛分布于岩基面上。此次试验研究即针对取自主坝基础的粘土质砂层进行三轴、固结、渗透试验,通过上述试验提出E-μ模型参数、固结系数、渗透系数,从而验证以粘土质砂代替常规粘土土料进行上坝填筑的可行性。

Huanggou pumped power station construction dam backfilling and vice dam are claymaterial storage.As the main soil dam foundation,clayey sand is widely distributed in the rock surface,such as clay sand can be used as the engineering needs of clay,which can not only prevent soil field land,mining,long distance transportation of trouble,greatly reduce the soil material cost,and also can reduce theamount of waste slag dam excavation.This experimental study is taken from the main dam foundation for clay sand to three axis,consolidation,permeability test,the test proposed by E-u model parameter,the coefficient of consolidation,permeability coefficient,which verifies the feasibility of clayey sand instead of conventional clay soil dam filling material.