论文部分内容阅读
目前,地下输水管道多为铸铁管道。由于地基和地面荷载的变化,管道经常发生泄漏。传统的堵漏方法是,先找出漏水点,根据管径大小制作两块半圆形钢板,待全系统停水后,将两块半圆形钢板箍于输水管泄漏处,焊接好,将熔化的铅灌入钢板箍与输水管之间的缝隙中,待铅冷却后,试漏没问题,做防腐处理,再恢复供水。这种方法检修时间长,施工难度大。尤其是钢板箍
At present, underground water pipelines are mostly cast iron pipelines. Due to changes in ground and ground loads, pipelines often leak. The traditional method of plugging leakage is to find the leaking point and make two semi-circular steel plates according to the diameter of the pipe. After the water is stopped in the whole system, two semi-circular steel plates are hooped at the leaking point of the water pipe, which will be welded well. The molten lead is poured into the gap between the steel plate hoop and the water pipe. After the lead is cooled, there is no problem in the test leak, and the antiseptic treatment is performed and the water supply is resumed. This method has a long service time and is difficult to construct. Especially the steel plate hoop