一、井管淤沙及其产生原因混凝土管井和钢筋混凝土管井(简称“管井”)是开发利用浅层淡水的一种有效井型。它投资少,工艺简单,施工期短,发挥效益快,因此已被广泛采用。但是,在含水层为细砂、粉砂、亚砂土的水文地质条件下,管井经 First, well pipe silt and its causes Concrete pipe wells and reinforced concrete pipe wells (hereinafter referred to as “pipe”) is the development and utilization of an effective freshwater well type. It is less investment, simple process, short construction period, to play a fast, it has been widely used. However, under the hydrogeological conditions that the aquifer is fine sand, silt, and sandy soil, the well is well controlled