摘要
沙湾水电站5#~8#泄洪冲砂闸,闸基下一期围堰2道塑性砼防渗墙对闸底板应力和闸基不均匀沉降产生较大影响。针对闸下塑性混凝土防渗墙提出了6种处理方案,通过有限元分析计算不同工况和塑性防渗墙处理方案下的沉降及应力分布,推荐采用对建基面以下8 m范围内的塑性砼防渗墙进行松动爆破,同时对建基面以下2.0 m范围内的残存防渗墙进行清挖后回填原状砂卵石。从处理后泄洪冲沙闸运行情况来看,闸基处理方式是合适的,可为类似工程作参考。
It caused great influence of uneven settlement on flood discharge foundation from two plastic concrete impervious walls of first-stage cofferdam of No.5 to No.8 flood discharge in Shawan hydropower station.In accordance with plastic concrete impervious walls under flood discharge foundation,this paper calculated settlement and stress distribution of 6 processing schemes in finite element method under different conditions.Numerical calculation research shows that loose blasting should be carried out to plastic concrete impervious wall under 8m of foundation surface,and original sandy gravel should be cleaned and filled the residual impervious wall under 2m of foundation surface.The subsequent operation confirms foundation treatment is correct,which can be used as a reference for similar projects.
作者
高远贵
高山
崔露丹
GAO Yuan-gui;GAO Shan;CUI Lu-dan(Institute ofWater Conservancy Science of Sichuan Provice,Chengdu 610072,China;College ofWater Resource&Hydropower of Sichuan University,Chengdu 610065,China;XieheWater Conservancy and Hydropower Engineering Company of Chengdu,Chengdu 610072,China)
出处
《西昌学院学报（自然科学版）》
2018年第2期9-12,共4页
Journal of Xichang University(Natural Science Edition)
基金
四川省教育厅科研基金项目(13ZB0169)
关键词
沙湾水电站
泄洪冲砂闸
闸基处理
有限元
Shawan hydropower station
flood discharge
foundation treatment
finite element
