ok 周黎明 超声波在某大坝混凝土裂缝深度检测中的.PDF

声学技术 Technical Acoustics 超声波在某大坝混凝土裂缝深度检测中的应用 1 2 1 1 2 周黎明 刘天佑 刘江平 肖国强 （1. 中国地质大学地球物理与空间信息学院，武汉，430074; 2.长江科学院，水利部岩土力学与工程重点实验室，武汉，430010） 摘 要：为查明某大坝裂缝深度及其发展情况，保证大坝安全运行，对大坝3条表面裂缝和3条深度裂缝分别采用 超声表面平测法和超声钻孔对测法进行检测。通过对检测数据的处理，计算了裂缝的深度值，并在此基础上分 析了裂缝的发展情况和对大坝安全的影响。 关键词：超声波，裂缝，混凝土，大坝 The application of ultrasonic detecting on concrete cracks depth of a dam 1 2 1 1 2 ZHOU Liming LIU Tian-you LIU Jiang-ping XIAO Guo-qiang (1.China University of Geosciences, Institute of Geophysics Geomatics , Wuhan, 430074; 2. Changjiang Scientific Research Institute, Key Laboratory Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Wuhan, 430010) Abstract: In order to investigate and bring out into the open the depth and development of cracks in a dam, and protect the safe of the dam, we adopt ultrasonic surface test method to detect the depth of 3 external cracks, and adopt ultrasonic drilling hole test method to detect the depth of 3 deep crack . We compute the depth of cracks by processing the testing data. We analyze the cracks’ state of development and affecting the safe of the dam on the basis of above results. Key words：ultrasonci, crack, concrete, dam 1 引言 某水电厂拦河坝为砼重力坝和宽缝重力