本文将成功地用于农田供水和排水的水平井法推荐给大型基坑的排水施工。详细介绍了它的几种施工方法、主要设备,从排水效果、运行操作等方面与管井施工进行比较,如果取同深度的含水层水,水平井法是管井法排水量的三倍。本文还分别推导出潜水完整水平井、承压完整水平井及潜水非完整水平井在基坑排水时的涌水量公式。最后介绍了几种水平井布置方法。 The horizontal well method successfully applied to farmland water supply and drainage is recommended for drainage construction of large-scale foundation pits. Several kinds of construction methods and main equipments were introduced in detail. Compared with tube well construction in terms of drainage effect, operation and operation, if the aquifer water with the same depth was used, the horizontal well method was three times the displacement of tube well method. This paper also deduces the formula for the amount of water inflow when the submersible intact horizontal well, pressure-bearing intact horizontal well and submersible non-integrated horizontal well are drained in the foundation pit. Finally, several horizontal well layout methods are introduced.