井点降水法在输水管线施工中的应用

Application of Well Point Dewatering Method in Water Pipeline Construction

本文以辽宁大伙房水库输水应急入连工程为例,介绍了井点降水法在输水管线施工中的应用。实践证明,对于地下水位以下存在粉细沙地层的沟槽开挖,采用井点降水,可实现沟槽的干面开挖,避免坡面塌方,保证管线安装质量,加快施工进度,从而节省工程费用。采用井点降水,是流沙地层最优的施工排水方案。

In the paper,Liaoning Dahuofang Reservoir water conveyance Dalian entrance project is adopted as an example for introducing the application of well point dewatering method in water pipeline construction. Practice shows that for ditch excavation below underground water level with silty fine sand stratum,adopting well point dewatering can realize dry surface excavation of ditch,avoid slope collapse,ensure pipeline installation quality,accelerate construction progress,and save project cost. Well point dewatering is adopted as the best construction drainage plan in the quicksand stratum.