塑料管封闭井是用塑料管做为井壁,井口直接与水泵进水管相联的一种井.因水文地质结构不同,可分为填料塑料管封闭井(简称填料井)和插管塑料管封闭井(简称插管井)两种.成井工艺:(一)钻孔:在摸清土层结构的基础上,开始钻孔.第一次钻孔孔径为75～100毫米,根据 Plastic tube closed well is a kind of well with plastic pipe as well wall and wellhead directly connected with water pump inlet pipe.Because of different hydrogeological structure, it can be divided into filling plastic pipe closed well (referred to as filling well) and intubated plastic pipe Closed well (referred to as intubation well) into two kinds of well technology: (a) drilling: to find out the structure of the soil foundation, began drilling the first hole diameter of 75 to 100 mm, according to