煤窑沟水库坝壳料特性试验研究

Experimental study on shell material characteristics of coal kiln reservoir

煤窑沟水库是一座拦河式小(一)型水库,坝型为混凝土面板堆砂砾石坝。为了解坝壳料的物理、力学特性、渗透特性,对大坝筑坝坝壳料进行试验分析。结果表明,煤窑沟水库坝壳料场(C4料场)试料经过超径处理后最大干密度为2.32g/cm3,最小干密度为1.91g/cm3,相对密度控制在0.85,对应干密度为2.25g/cm3;对试验参数进行修正后,与同类工程相似,试验结果可信,E~μ、E^B试验参数满足大坝应力应变计算要求;在100kPa^200kPa范围内,C4料场坝壳料浸水饱和后压缩性变化不大;C4料场坝壳料渗透系数在10-2cm/s数量级以上,可以满足自由排水要求。结果可为工程建设提供依据。

The MeiYaogou Reservoir is a small river-type (1) type one, and the dam type is a concrete face pile sand gravel dam. In order to understand the physical, mechanical and permeability characteristics of the dam shell material, the shell dam dam shell material was tested and analyzed. The results show that the maximum dry density of the sample of the dam shell material yard (C4 stock yard) of the coal kiln reservoir is 2.32 g/cm3, the minimum dry density is 1.91 g/cm3, and the relative density is controlled at 0.85, corresponding to the dry density. 2.25 g/cm3;after the test parameters are corrected, similar to similar projects, the test results are credible, and the test parameters of E~μ and E^B meet the stress and strain calculation requirements of the dam;in the range of 100 kPa^200 kPa, the C4 stockyard dam The compressibility of the shell material is not changed after water saturation;the permeability coefficient of the shell material of the C4 material yard is above 10-2cm/s, which can meet the requirements of free drainage. The results can provide a basis for engineering construction.