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本文给出了该工程的基本情况及本次测试所采用的P．I．T桩基完整性测试仪基本性能，同时简要论述了反射波法的基本原理及典型曲线的判别规则。最后给出了该工程的部分实测曲线，重点论述了一种异常曲线的研判及开挖验证。
This article gives the basic situation of the project and the P. I. T pile foundation integrity tester basic performance, at the same time briefly discussed the basic principle of the reflected wave method and the identification of typical curves. Finally, some measured curves of the project are given, focusing on the analysis of an abnormal curve and excavation verification.