在工程施工过程中，对管道进行水压试验时其试验工况与运行工况存在较大差异，使水压试验中管道的安全问题突出。在水电站的钢岔管和水轮机配水环管的水压试验中，采用声发射监测技术在线动态监测管道在水压试验中的缺陷变形和裂纹扩展情况，效果明显，其经验可供同类工程参考。

In the process of engineering construction, there was a great difference between the test condition and the operation working condition when the pipe was tested by hydraulic test, which made the safety problem of the pipe outstanding in the hydraulic test. In the hydraulic test of the steel bifurcated pipe and the distributing pipe of hydraulic turbine, acoustic emission monitoring technology was used to dynamically monitor the defect deformation and crack propagation of pipe in hydraulic test. The effect was obvious, and its experience can be referred for similar projects.