浅谈山体人防工程防水板锚固技术

Brief Discussion on Anchoring Technology of Waterproof Board in Mountain Civil Air Defense Project

柳州市桐油山一号人防工程,洞高7.95 m,洞跨17.2 m,主洞长509 m,工程防水原设计采用喷锚混凝土支护(初支面)+土工织物+热熔垫片+PVC复合防水板+混凝土结构顶板的形式。工程实施时,防水板由射钉固定改为膨胀螺栓双垫片固定工艺,取得了良好的工程经济和质量效果,可为类似工程施工提供借鉴。

The No.1 civil air defense project of Tongyou Mountain in Liuzhou City has a tunnel height of 7.95 m,a tunnel span of 17.2 m,and a main tunnel length of 509 m.The original waterproof design of the project adopts the form of bolting and shotcreting(initial support surface)+geotextile+hot-melt gasket+PVC composite waterproof board+concrete structure roof.During the construction,the waterproof board is fixed with expansion bolts and double gaskets instead of nails,which achieves good engineering economic and quality effects,and can provide reference for similar engineering construction.