长沙地铁4号线明挖车站防水新技术探讨

Discussion on New Waterproofing Technology of Open-cut Station of Changsha Rail Transit, Line 4

长沙地铁4号线一期工程汉王陵公园站,底板和侧墙部位选用HDPE防水卷材+喷涂速凝橡胶沥青防水涂料的涂卷复合防水方案,顶板部位直接施工喷涂速凝橡胶沥青防水涂料。分别介绍了两种方案的施工工艺及重点控制事项,并论述了预铺反粘新工艺在地下工程防水中的优势。

The Han Tomb Park Station for the first phase project of Changsha Rail Transit Line 4 adopted HDPE waterproofing membrane and spraying-applied ＆ fast-cured rubber-modified bitumen waterproofing coating for basement and side walls, and merely spraying-applied ＆ fast-cured rubber-modified bitumen waterproofing coating for roof part. This article elaborates the construction process and attention points for the two schemes, and discusses the advantages for the new pre-laid method in underground waterproofing engineering.