混凝防渗墙在涵管上的施工浅析

Construction of Concrete Cut-off Walls on Culvert Pipes

病险水库除险加固中,垂直防渗墙在涵管上的施工是难点。采用橡胶充气胶囊在涵管内予留防渗墙施工尺寸,上下游封堵涵管,防渗墙泥浆槽在两胶囊之间通过。待防渗墙初凝后,放空胶囊,在墙上重新打孔,接通涵管。既可以解决施工中漏浆、漏水的问题,又能达到缩短工期、不误用水的目的,具有推广价值。

The construction of vertical cut-off walls on culvert pipes is the most difficult part in the reinforcement of reservoirs in danger.Inflatable rubber capsules are used inside the culverts to give room for construction and both sides of the culverts are blocked,the cut-off wall concrete going between the two capsules.When the initial setting of the walls,empty the capsules and re-punch the walls to connect the culverts,which may solve the problems of concrete and water leakage,shorten the construction period and guarantee the use of water.