土工膜在土石坝除险加固工程中的应用  

Application of geomembrane in earth-rock dam reinforcement project

作　　者：曹磊芳 李元奇 CAO Lei-feng;LI Yuan-qi(Guizhou Survey & Design Research Institute for Water Resources and Hydropower,Guiyang 550002,China;Guizhou Hydraulic Science and Technology Development Co.Ltd.,Guiyang 550002,China)

机构地区：[1]贵州省水利水电勘测设计研究院,贵阳550002 [2]贵州水利科技开发有限责任公司,贵阳550002

出　　处：《广西水利水电》2019年第5期67-69,72,共4页Guangxi Water Resources & Hydropower Engineering

摘　　要：土工膜是由高聚物制成的透水性极小的工程防渗材料,具有结构简单,施工方便,防渗效果好,节省工程造价,工期短等技术特点,可用于堤防、围堰、库区防渗、渠道防渗、新建土石坝防渗、病险水库防渗、尾矿坝的初期坝防渗层等。介绍了土工膜的在土石坝病险水库应用设计中材料的选择,土工薄膜水压力下厚度的计算、抗滑稳定分析以及土工织物排水计算。Geomembrane is engineering material made of high polymer and with very little water permeability,simple structure and good anti-seepage effects,permitting convenient construction,less cost and short construction period.It can be utilized in construction of dike,cofferdam,seepage prevention works of reservoir area,canal,newly built earth-rock dam,risk reservoir,initial anti-seepage layer of tailings dam etc.An introduction was made on the application of geomembrane in an earth-rock dam reinforcement project in respects of selection of materials,calculation of geomembrane thickness under water pressure,analysis of stability against sliding,geotextile drainage calculation.

关 键 词：土工薄膜 防渗 病险水库 厚度计算 抗滑稳定 排水 

分 类 号：TV641[水利工程—水利水电工程] TV698.2