摘要
简要介绍了应用超声脉冲回波法对隧道衬砌混凝土质量进行检测的方法、原理及其实际应用效果。测试结果表明,超声脉冲回波法可通过频谱、振幅以及反射波的相位分辨空洞、裂隙和不密实处,能及时、快速地发现衬砌混凝土的质量问题,为工程质检和评价提供依据,是一种能很好地对衬砌混凝土质量进行检测的无损检测方法。
The basic principles and measuring techniques concerning ultrasonic impact--echo method used for quality detection of tunnel lining concrete are presented with real application examples. The testing indicates that ultrasonic impact--echo method can detect the cavities and empty areas behind the lining,the position of low density in concrete by analyzing frequency spectrum, phase and amplitude of reflection wave and superposition of waves. It＇s a useful method by providing important prediction in project examination and estimation.
出处
《工程地球物理学报》
2010年第2期197-200,共4页
Chinese Journal of Engineering Geophysics
关键词
脉冲回波
衬砌质量
频谱特性
无损检测
ultrasonic impact--echo method
lining concrete quality
spectrum
non--de- structive detection
