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通过水泥板每孔灌浆量以及与其他孔连通情况,对几种脱空检测方法进行了验证。在500 m长的试验路中分别使用了FW D、声振法等设备进行了脱空检测,通过比较每孔灌浆量的方法对几种检测方法进行了验证,得到了不同检测方法的识别率,为施工单位选择适当的检测方法提供了依据。
Through the grouting amount per hole of cement board and the connection with other holes, several methods of void detection were verified. In the 500 m long test road, FW D and acoustic vibration method were respectively used for the void detection. Several detection methods were verified by comparing the grouting volume of each hole, and the recognition rate of different detection methods was obtained , Provided the basis for the construction unit to choose the appropriate detection method.