在水文地质勘探工作中,为了了解岩石的渗透性能,常需进行抽水试验,在钻孔直径较小,地下水位埋藏很深而其单位涌水量又较大时,选择适当的设备就成为抽水工作的难题,而且一般抽水设备多是复杂而沉重的机械,既不方便又不经济,下面介绍一种由钻场基本设备——钻机、套管、钻杆等装置而成的拉杆水泵, In hydrogeological exploration work, in order to understand the permeability of rock, pumping tests are often required. When the drilling diameter is small, the groundwater level is buried deeply and the unit water inflow is large, selecting the appropriate equipment becomes the pumping work The general pumping equipment is more complex and heavy machinery, neither convenient nor economical, here is a basic equipment from the drilling site - drill, casing, drill pipe and other devices made of rod pump,