摘要
近年来瑞雷波变频探测法已用于工程地质勘查。瑞雷波是一种沿地表传播的地震波一面波。瑞雷波的传播速度(V_R)可由地面上相隔一定间距的拾震器测定。众所周知,瑞雷波的波长随频率的降低而增大,故改变频率可获得不同深度上的V_R。本文简要地叙述了瑞雷波变频探测法的基本原理,并列举了一些初步研究的实例。例如,根据V_R的变化对地下土壤进行分层,并提供各层的动力学特性,根据V_R的异常探测地下管道或洞穴等等。前言在工程地质勘探中,应用常规的物探方法在不打钻的情况下。
the Rayleigh wave variable frequency method has been used for enginering survey recently. Rayleigh wave, namely surface wave, is one kind of seismic waves whioh propagates along the surface of the Earth. The velocity of Rayleigh wave(V_R) can be detecteb with geophones placed at a certain interval on the surface. It is common knowledge that the wavelength of Rayleigh wave(λ_R)increases with the decrease of the frequency, so the velocities of Rayleigh waves through different depths can be obtained by varying the frequency. In this paper the basic principles of the method are briefly expounded, and some concrete examples such as layering soil, finding out dynamic properties of each layer, probing into underground pipelines and caves and so forth on the basis of the changes and abnormalities of V_R are presented.
出处
《石家庄经济学院学报》
1988年第2期93-99,共7页
Journal of Shijiazhuang University of Economics
