混凝土垫层对抽蓄电站引水系统围岩内水压力分担率的影响
wf（2017）
Abstract
基于FLAC3D软件,通过对比分析工程实测数据、数值仿真和规范方法结果,研究引水系统回填混凝土标号改变对钢衬变形和围岩内水压力分担率的影响.结果表明,现行规范在计算钢衬环向应力时,未考虑混凝土垫层,可能导致计算应力值偏差,进而影响围岩内水压力分担率;垫层混凝土标号由C15增加到C25,虽可减小钢衬的径向位移和环向拉应力,提高围岩内水压力分担率,但效果不显著.
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Key words
pumped-storage power station,concrete cushion,sharing ratio of internal pressure in bedrock,specification method,numerical simulation
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