QMS水电站压力前池沉降和渗流复核计算及处理措施  

Check Calculation and Treatment Measures for Settlement and Seepage of Forebay in QMS Hydropower Station

作　　者：吴亮[1] WU Liang(Xinjiang Water Conservancy and Hydropower Survey and Design Institute,Urumqi 830000,China)

机构地区：[1]新疆水利水电勘测设计研究院,新疆乌鲁木齐830000

出　　处：《红水河》2022年第1期72-78,共7页Hongshui River

摘　　要：QMS水电站为引水式电站,具有水头低、流量大的特点,为形成有效的发电水头,在引水渠道末端设置压力前池。压力前池基础为湿陷性黄土和砂砾石互层,基础厚实,施工过程中采用砂砾石换填基础。压力前池在运行时出现结构缝漏水情况,渗漏水造成基础不均匀沉降,进一步加大了结构缝的破坏,加大了压力前池运行的风险。笔者根据压力前池实际建设情况,采用有限元计算方法,对压力前池稳定及渗流进行了计算分析,评价了压力前池运行状况,并提出了相应的处理措施,依据计算结果及处理措施最大限度地保证压力前池的运行安全,为其他类似工程提供了借鉴参考。QMS Hydropower Station is a diversion type hydropower station with the characteristics of low head and large flow.In order to form an effective power generation head,a forebay is set at the end of the diversion channel.The foundation of the forebay is collapsible loess and gravel interbedded,and the foundation is thick and solid.In the construction process,the gravel is used to fill the foundation.In the operation of the forebay,the structural joint leakage occurs,and the leakage causes uneven settlement of the foundation,which further increases the damage of the structural joint and increases the risk of the operation of the forebay.According to the actual construction of the forebay,the finite element method is used to calculate and analyze the stability and seepage of the forebay.The operation status of the forebay is evaluated,and the corresponding treatment measures are put forward.According to the calculation results and treatment measures,the operation safety of the forebay is guaranteed to the maximum extent,which provides reference for other similar projects.

关 键 词：压力前池 沉降 渗流 处理措施 

分 类 号：TV732.6[水利工程—水利水电工程]