我公司在南京工学院的协助下,成功地用钢筋混凝土井管代替钢铁井管打深井。经十多年来的使用表明,质量良好,受到使用单位的欢迎。现就其制作、使用情况简介于下。一、井管设计按钢铁井管的要求而设计外径360mm,内径300mm,壁厚50mm的配筋混凝土井管(图1)。经多次改进,采用抗拉主筋φ6.5×14和φ4mm环向筋螺旋缠绕,间隔50mm。井管两端用6×60mm钢板圆形钢 With the assistance of Nanjing Institute of Technology, our company successfully used steel reinforced concrete well pipes instead of steel well pipes to play deep wells. After more than a decade of use, it shows that the quality is good and it is welcomed by the users. Now it’s briefed on its production and use. First, the well pipe design According to the requirements of the steel well pipe and designed with an external diameter of 360mm, internal diameter of 300mm, wall thickness of 50mm reinforced concrete well pipe (Figure 1). After several improvements, the main tension bars φ6.5×14 and φ4 mm are spirally wound with a spacing of 50 mm. 6×60mm steel round steel at both ends of the well pipe