1施工方法的比较山东省博兴县东南部地形南高北低，地下水位很低，为解决水资源问题，计划进行北水南调工程。工程施工可选方案有三：明渠引水、大开挖暗渠引水和机械施工地下暗管引水。明渠引水由于永久占用大量农田，工程量大，所以不直采用。大开挖掘施工方法虽然简单，但缺 Comparison of Construction Methods The southeastern part of Boxing County in Shandong Province is characterized by low elevation in the south and north and low groundwater level. In order to solve the problem of water resources, it is planned to carry out the North-South Water Transfer Project. There are three alternative construction options: open channel diversion, excavation of culvert drainage and mechanical construction of underground pipe diversion. Open channel diversion due to the permanent occupation of a large number of farmland, a large amount of engineering, it is not straightforward to use. Open excavation method of construction is simple, but lacking