混凝土面板堆石坝整体稳定性的数值分析  

Numerical Simulation for Stability Analysis of Concrete Face Rockfill Dam

作　　者：张军 景建伟[2] 陈效华 李守巨[4] 

机构地区：[1]辽宁蒲石河抽水蓄能有限公司,丹东118000 [2]中水东北勘测设计研究有限责任公司,长春130021 [3]武警水电-总队蒲石河工程项目部,丹东118216 [4]大连理工大学工程力学系,大连116024

出　　处：《科学技术与工程》2008年第14期3858-3862,共5页Science Technology and Engineering

基　　金：国家重点基础研究发展规划(973)项目(2007CB714006)资助

摘　　要：混凝土面板堆石坝的抗滑稳定性直接影响到大坝的建设和安全使用。根据实验室实测的堆石料的力学参数,采用极限平衡方法分析了堆石坝在竣工后,设计水位和死水位条件下的整体抗滑稳定性。数值计算结果表明,随着大坝上游水位的增加,坝体的扬压力逐渐增加,导致坝体的整体抗滑稳定性逐渐降低。基于毕肖普(Bishop)极限平衡理论计算结果表明,在不同大坝上游水位工况下大坝具有良好的抗滑稳定安全性。采用非线性有限元数值模拟方法,数值仿真了堆石坝的填筑过程和竣工后的沉降分布。The stability problem of rockfill dam can affect the construction and safety application of dams. Based on the tested mechanical parameters of rockfill materials and limit equilibrium principle, the stability of rockfill dam is estimated under different loading cases which include the final completion, design water level and lower water level. The numerical computation results show that the uplift pressure of dam will increase with increasing of upstream water level and then can decrease the factor of safety of dam stability. The dam poses good stability ac- cording to computational results based on Bishop limit equilibrium principle. The pouring process of rockfill dam is simulated by using nonlinear finite element method. The vertical and horizontal deformations of rockfill dam are computed.

关 键 词：混凝土面板堆石坝 整体稳定性 数值模拟 安全系数 沉降 

分 类 号：TV641.4[水利工程—水利水电工程]