【摘要】 针对沙坪水电站首部枢纽布置和闸址处深厚河床覆盖层复杂的地质条件,通过三维渗流场有限元分析得出渗流量、渗透比降、渗透压力,并对河床覆盖层渗透系数进行浮值分析和敏感性分析,评价各方案闸坝基础防渗措施的效果,优化混凝土防渗墙的深度,为工程的优化设计提供依据。更多还原

【Abstract】 According to the layout,condition of thick and complex riverbed overburden of Shaping hydroelectric project headwork,formulated many kinds of scheme by different depth of concrete impermeable wall,through analysis of 3D seepage flow finite element method,seepage quantity and gradient of permeation calculation,sensitivity analyses and floating value analyses to coefficient of permeability of riverbed overburden,appraise the effect of impervious measure of gate dam base for ever scheme and Optimize the depth of concrete impermeable wall.The result provides the foundation for the optimization design.更多还原