深厚覆盖层上某闸坝工程的应力应变分析

摘要

随着水电资源的继续开发,地质条件良好的坝址多已建坝,因此在深厚覆盖层上建坝的趋势日益明显.覆盖层具有结构松散、渗透性强、岩性不均匀等特征,使工程常遇到地基承载力低,不均匀沉降大,渗流不够稳定等问题.本文利用有限元软件对深厚覆盖层上某闸坝工程进行建模、计算,最终对计算结果进行应力应变分析,为工程应用提供有力依据.%With the hydropower resources continue to develop,the dam sites with good geological condition had been used; so,the trend of dam building on the thick overburden becomes increasingly obvious.The thick overburden has the characteristics of loose structure,strong permeability,uneven lithological,so as to make projects to exhibit problems of lower bearing capacity of foundation,serious uneven settlement,seepage flow instability.The authors use the finite element software SDAS to model and calculate a project example on the thick overburden,and analyze the stress-strain calculation results,so as to provide a favorable evidence for engineering application.