偏心式激振器在稳态瑞利波勘探中的应用

THE APPLICATION OF ECCENTRIC TYPE VIBRATION EXCITER TO STEADY STATE RAYLEIGH WAVE EXPLORATION

介绍了偏心式激振器在稳态瑞利波勘探中的应用,现场工作布置方法以及频散曲线的计算方法,并对稳态瑞利波法勘探与钻孔波速测试进行了对比,两者数据很接近,偏心式激振器激振频率低,激振能量大,在稳态瑞雷波法勘探中应用效果很好,可以代替钻孔声波测试,进行地层波速测试,降低成本,提高工程勘察效率。

This paper describes the application of eccentric type vibration exciter to steady state Rayleigh wave exploration, the method of in situ work arrangement and the calculation method for frequency dispersion curves, and makes a comparison between the result of the steady state Rayleigh wave exploration and that of the drill hole wave velocity test. The data obtained by these two methods are quite close to each other. With its low exciting frequency and large exciting energy, the eccentric type vibration exciter can yield good result in steady state Rayleigh wave exploration. It can thus be used to replace drill hole sonic wave test in stratigraphic wave velocity test so as to cut down the cost and raise the efficiency of engineering exploration.