摘要
Abstract
In order to reduce water delivery loss of Main Canal in Middle Route Project of South-to-North Water Diversion, the anti-seepage measures of whole-section concrete lining was adopted, which is effective for the whole-excavated canal with better geotechnical condition and small permeability coefficient. But for canal section with lateral and vertical seepage problem, the composite geo-membrane is necessary to strengthen the anti-seepage design. The lining structure might be unstable in the case of underground water higher than canal water;therefore the drainage solution, consisted of drainage blanket, pervious hose and check valve, was designed and the plastic blind drainage ditch was used in canal slope. The in-situ practice shows that the drainage measures were effective.关键词
渠道防渗/衬砌排水/复合土工膜/南水北调中线工程Key words
anti-seepage of canal/drainage of lining/composited geo-membrane/Middle Route Project of South-to-North Water Diversion分类
建筑与水利
