桂花水库坝址区地下水渗流场模拟及渗漏量计算
摘要:坝址区地质勘察结果显示,桂花水库蓄水后存在坝基及绕坝渗漏问题,为了进一步研究水库渗漏问题,在坝址区工程地质和水文地质勘察基础上,概化出坝址区水文地质概念模型,建立坝址区地下水三维非稳定流数值模型,并采用GMS软件进行模拟水库蓄水前后坝址区三维渗漏场,同时计算水库天然工况、无防渗帷幕正常蓄水和有防渗帷幕正常蓄水3种工况下的渗漏量。模拟计算结果表明天然条件下过坝轴线流量170.42m3/d,无防渗帷幕正常蓄水工况渗漏量为6740.64 m3/d,有防渗帷幕正常蓄水工况渗漏量为1553.31m3/d。防渗处理后渗漏减少76.95%,防渗帷幕截渗效果显著。
关键词:水库渗漏;渗流场数值模拟;防渗帷幕;渗漏量
The numerical simulation and seepage quantity of groundwater in
dam of Guihua reservoir
Lizhong Yang1;Xiaolong Fu1;Luoming1
(1、The hydraulic power survey and design co. LTD of Chuxiong
xinyuan)
Abstract:Geological survey for the dam site area, according to
the results of osmanthus after reservoir dam foundation and seepage
around the dam problems, in order to further study the reservoir
leakage problem, engineering geology and hydrogeology survey in dam
site area, based on the hydrogeological conceptual model generalized