【摘要】 下坂地水库地处高地震区,大坝基础覆盖层厚度达150 m,且存在粉细砂层,针对下坂地大坝工程的特点,在坝料静、动力特性试验和三维静力分析的基础上,采用考虑坝体—覆盖层—防渗体等动力相互作用的非线性有效应力地震反应分析方法,对下坂地沥青混凝土心墙坝坝体和覆盖层进行了地震情况下安全评价。更多还原

【Abstract】 Xiabandi Reservoir is located in a high seismic zone,the covering thickness of the dam foundation reaches to 150 m,and there exists a fine sand layer.Directing against the characteristics of the dam,and based on the static and dynamic tests of the materials of the dam and the three-dimensional static analysis,the security of the dam and cover in circumstances of earthquake are evaluated by adopting the nonlinear and effective stress analysis of considering the dynamic interreaction of dam-cover-cut off wall.更多还原