bottom thickness meaning in English

底厚

In order to detect the bottom thickness , cavity , leak and deformation of steel meshes in secondary lining of concrete in tunnel construction , the authors evaluate the wave character and the detected result in the second lining of the tunnel using surveying radar technology and conclude the wave character in the tunnel lining which has mass defect and tested the accuracy and reliability of this technique
摘要为检明隧道混凝土二次衬砌中的底界厚度、空洞、漏水、钢筋网变形等质量问题，利用探地雷达技术，通过对检测方法及工程检测实验的研究，进行隧道二次衬砌中雷达波形特征参数及检测结果评价，总结了隧道衬砌质量问题的雷达波形特征，验证检测方法的精度和可靠性。