漏损管道无损检测的仿真分析

地下供水管道漏损的准确定位问题一直是困扰供水系统和市政建设的难题，它不仅造成水资源的损失，而且对基础设施的破坏较大。目前，提出的探测管道漏损的方法有流量差法、压力差法、化学法和应力波法等，用这些方法来准确定位漏损位置时误差较大，然而声学方法却能有效检测漏损并确定漏损位置。该文利用仿真方法，从声学的角度对此进行了有益的尝试和合理的分析，并利用虚拟仪器技术软件Labview对漏损点的声信号进行仿真分析，对准确定位管道的泄漏位置有很大的指导意义。

Simulation Analysis of Non - destructive Testing of Leakage Pipes

It has always been a difficult problem for water supply system and civil construction to precisely locate the position of the underground pipe leaks ,which not only caused the loss of water resource ,but also made great damage of the fundamental establishment. Now, the means of detecting non- destructive pipe leaks included: the flow quantity method,the pressure measurement method, the chemistry method ,and the stress-wave method, but these had much error when precisely locating the position of the underground pipe leaks .However, the acoustic technique could efficiently detect leakages and locate the leak position. The paper reasonably analysed the problem by acoustics simulation technique, and gave the simulation analysis of acoustic signal of the leak position with LabVIEW, which had more instruction to precisely locate the leak position of the underground pipes.