錾高水电站深覆盖层泄洪冲沙闸基础地震永久变形分析  

Analysis on Seismic Permanent Deformation of Foundation of Flood Discharge and Sand Flushing Sluice in Deep Overburden of Zangao Hydropower Station

作　　者：邓理想[1] 吴俊杰[1] 王景 DENG Li-xiang;WU Jun-jie;WANG Jing(Xinjiang Survey and Design Institute for Water Resources and Hydropower,Urumqi 830000,China)

机构地区：[1]新疆水利水电勘测设计研究院,乌鲁木齐830000

出　　处：《水利科技与经济》2022年第5期15-22,共8页Water Conservancy Science and Technology and Economy

基　　金：国家重点研发计划(2017YFC0404904)。

摘　　要：新疆錾高水电站工程泄洪冲沙闸建于深厚覆盖层上,闸前采用混凝土连接板+防渗墙的形式对深覆盖层进行全断面防渗。其中,计算闸室与连接板之间铜止水接缝处的最大沉降差对工程能否安全运行至关重要。通过ABAQUS大型非线性三维有限元软件,对闸室、连接板、防渗墙对覆盖层的绝对沉降与不均匀沉降差进行计算,分析不同工况条件下连接板与闸室的最大沉降差。结果表明,正常蓄水位+地震工况时的闸基沉降最大,不均匀沉降差均满足设计要求。以期研究成果能为今后同类型工程提供借鉴。The flood discharge and scouring sluice of Xinjiang Zangao hydropower station project is built on the deep overburden.In front of the sluice,the full section anti-seepage is carried out in the form of concrete connecting plate+anti-seepage wall.However,the calculation of the maximum settlement difference at the copper water stop joint between the lock chamber and the connecting plate is very important for the safe operation of the project.Through ABAQUS large-scale nonlinear three-dimensional finite element software,the calculation of the absolute settlement and differential settlement difference of the gate chamber,connecting plate and cut-off wall to the overburden is realized,and the maximum settlement difference between the connecting plate and the gate chamber under different working conditions is analyzed.The results show that the settlement of the gate foundation is the largest under normal pool level+seismic conditions,and the differential differential settlement meets the design requirements.Based on this,it can provide reference for similar projects in the future.

关 键 词：深覆盖层 泄洪冲沙闸 沉降变形计算 地震永久变形 三维有限元计算 

分 类 号：TV131[水利工程—水力学及河流动力学]