大口径长距离输水管道渗漏原位监测研究

Study on the in situ leakage detection of the long-distance water transmission pipe with large diameter

通过对大口径长距离输水管道渗漏进行原位监测试验,探讨利用高精度压力传感器进行渗漏监测的可行性,研究两种大口径管道能够监测到的最小渗漏量,提出采用压力降变化速率指标进行渗漏判别和渗漏点初步定位的思路,为管道安全运行和维护提供简捷有效的技术方法。

Through the experiment study on the in situ monitoring of the leakage of the longdistance and large diameter water transmission pipe,this paper studied the possibility of monitoring the leakage by pressure sensor with high accuracy.The minimum leakages to be detected on two kinds of large-diameter pipe were studied.This paper proposed the idea of using the index of head loss rate to detect the leakage and locate the leaking point,which would offer a simple and effective method for the pipe safe operation and maintenance.