小浪底水库大坝坝基渗漏影响分析  

Effect Analysis of Dam Foundation Leakage in Xiaolangdi Reservoir Dam

作　　者：顾正聪 黄勇[1] 向衍[2] 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098 [2]南京水利科学研究院,江苏南京210029

出　　处：《水电能源科学》2015年第3期76-80,41,共6页Water Resources and Power

基　　金：国家自然科学基金项目(51079043)

摘　　要：水库运行期间,坝体及坝基的渗漏不可避免,渗流对其稳定性影响较大,确定渗流量及主要渗漏部位尤显重要,以小浪底水库大坝为例,采用Feflow地下水数值模拟软件计算坝址区的地下水位,并与观测孔的实测水位进行拟合,反演获得坝址区各种材料的渗透参数值,并在此基础上,对坝基深厚覆盖层和断层等条件变化时的渗流量进行模拟预测。计算结果表明,坝基深厚覆盖层和断层对坝基的渗漏量影响明显,应加强坝基和断层的补强灌浆措施。During the operation of reservoirs,the leakage of dam and dam foundation is inevitable and it has impact on the stability of the dam.So,it is important to determine the leakage flow and its major position.Taking Xiaolangdi reservoir dam for an example,groundwater numerical simulation software Feflow is used to calculate the groundwater level around the dam area.And then it is fitted with the water level of observation wells.At the same time,the penetration parameters of various materials in dam area are obtained by inversion method.Finally,the leakage discharge of the deep overburden and fault are simulated.The results show that the dam deep overburden and fault has significantly impact on the dam foundation leakage.Therefore,dam grouting should be strengthened.

关 键 词：坝基 渗流量 Feflow软件 深厚覆盖层 断层 小浪底水库大坝 

分 类 号：TV697.32[水利工程—水利水电工程]