我厂上水用的是自应力水泥管。其安装方法一般是在承、插口之间加一个橡胶圈,然后再用膨胀水泥堵塞,安装很方便。但是,一旦发现漏水,修理和堵漏是相当困难的。以前,我厂的修理方法是把漏的地方挖开,用6mm厚的钢板做一个“包箍”再割成两半,包在漏处,然后焊死,两端用麻塞紧,再用水泥堵塞。此法只能在漏管中无水的情况下施工,但是上水管埋在地下,出现漏水时(?)很困难的。因此,修理时间相当长, I plant the water is self-stress cement pipe. The installation method is generally in the bearing, socket plus a rubber ring, and then plug the expansion of cement, the installation is very convenient. However, repairs and plugging can be quite difficult once a leak is found. Previously, our factory repair method is to dig the leak place, with a 6mm thick steel plate to do a “bag hoop” and then cut into two halves, wrapped in leaks, and then welded to death, both ends with a tight plug, re-use Cement blocked. This method can only be constructed without water in the drain pipe, but the drain pipe buried in the ground, the leakage (?) Is very difficult. Therefore, the repair time is quite long,