坝址区三维渗流场数值模拟及监测成果对比  

Numerical simulation of three-dimensional seepage field in dam site area and comparison of monitoring results

作　　者：王开明 刘练 Wang Kaiming;Liu Lian

机构地区：[1]中国电建集团成都勘测设计研究院有限公司,四川成都610072

出　　处：《吉林水利》2017年第11期10-13,共4页Jilin Water Resources

摘　　要：通过Visual MODFLOW软件对某水电站的坝址区进行三维渗流场数值模拟,分析在正常蓄水位条件下坝址区的渗流场分布特征,渗流量大小等。发现渗流绕过灌浆帷幕和混凝土防渗墙后,水头损失明显,坝后压重平台坡脚有渗流溢出,渗流主要是库水绕过防渗墙底部,通过坝基覆盖层(1)、(2)向下游渗透。模型计算的三维渗流场与监测成果对比显示,二者分布特征大体一致,存在的一定差异是模型对坝体结构进行了概化,以及模型未能完全模拟地质条件的复杂性所造成。The three-dimensional seepage field of dam site of a hydropower station is simulated by Visual MODFLOW software,and the distribution characteristics of seepage field and seepage flow in dam site are analyzed under normal storage level.Think around the seepage curtain grouting and concrete cutoff wall,head loss,dam berm slope seepage and seepage of reservoir water overflow,mainly around the bottom of the cutoff wall,seepage through the dam foundation covering layer（1）、（2） and seepage to the lower reaches.Compared with the monitoring results of 3 D seepage field calculation model,the two distribution is largely the same,differences exist in the model are generalized to the dam structure,complexity and model fails to completely simulated geological conditions caused by the.

关 键 词：坝址区 渗流场 数值模拟 监测 

分 类 号：TV139.16[水利工程—水力学及河流动力学]