摘要
相邻道瑞雷波法是首先从共炮点记录中采用τ～p变换法分离出瑞雷波 ,然后采用相邻道计算频散曲线 ,进而通过反演获取横波速度及物性参数。从而消除当前所采用的多道获取频散曲线方法所存在的平均效应的影响 ,提高瑞雷波法的纵、横向分辨率和无损检测精度 ,以及拓宽瑞雷波法的应用范围。通过理论模型记录对面波的分离计算 ,以及采用该方法对某槽孔防渗墙抗压强度检测的实例应用 ,说明了理论方法的正确性、相邻道瑞雷波法检测防渗墙强度的可行性和有效性 。
Adjacent-channel transient wave method is a new shallow seismic method. It uses the Rayleigh wave separated from CMP record by τ～p transform, and then calculates adjacent-channel dispersion curves, while the s-wave velocity and physical parameters of media are obtained by means of inversion method. As it avoids averaging effect, it has much higher resolution and test precision than those for the multi-channel method to be used to calculate dispersion curves. Hence, Rayleigh wave method can find wider application. This paper firstly describes the basic theory of picking-up Rayleigh wave using τ～p transform. Secondly, it shows the Rayleigh wave abruption result of model record. Finally it gives an example of this method's application in compression strength test of a water-tight wall. It demonstrates that the adjacent-channel transient Rayleigh wave method is effective and proper in compression strength test of water-tight wall.
出处
《人民长江》
北大核心
2003年第2期34-36,共3页
Yangtze River
基金
湖北省基金项目资助研究课题 :路基和地基质量无损检测中的相邻道瑞雷波法研究
关键词
瑞雷波法
防渗墙
强度
检测
无损检测
抗压强度
Rayleigh wave method
nondistructive test
strength test
watertight wall
applied research
