瓦尔河取水项目低位泵房竖井开挖及墙体施工

Shaft Excavation and Walls Construction for Low Lift Pump Station for VRESAP in South Africa

南非瓦尔河取水项目低位泵房竖井施工是该项目中重要的组成部分,其位置紧临VAAL河边,低位泵房土建工程施工主要包括竖井开挖和墙体施工,竖井开挖施工主要是根据地质情况,松散土采用正常开挖,岩石部分以下采用爆破后开挖的方法并随时在开挖过程中岩体喷锚支护,墙体施工主要介绍了墙体混凝土浇筑方法、质量控制,以及在施工过程中遇到的强渗水处理。

Construction of the low lift pump station(LLPS) is the important section for the project.Civil works for LLPS mainly consist of the shaft excavation and walls of the LLPS.The shaft excavation is according the geologically condition,and the loose materials are remoued firstly,then blasting for the rock and rock support is done during the excavation.Wall construction mainly consists of the concrete pouring,quality control and dealing with the strong water seepage from the dam during construction.