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本文介绍了英国GDS instrument ltd.研制的GDS连续表面波系统及其在武广高速铁路软土勘察中的应用,该系统轻便、灵活,采集的资料可重复性好、精度高、稳定可靠,避免了瞬态面波勘探中资料处理结果可重复性差的问题。在武广高速铁路软土勘探中,共完成313个物理点的勘探,与静探重合35个点,取得的速度资料与静探结果对应性好,深度误差一般小于10%,速度等值线图较好地反映了软土在勘探剖面上的分布规律。
This article introduces the GDS continuous surface wave system developed by UK GDS instrument ltd. And its application in the soft soil survey of the Wuhan-Guangzhou high-speed railway. The system is lightweight and flexible. The collected data are of good repeatability, high precision, stable and reliable. The problem of poor repeatability of data processing results in transient surface wave prospecting. In the soft soil exploration of Wuhan-Guangzhou high-speed railway, a total of 313 physical points were surveyed, coinciding 35 points with the static exploration. The obtained velocity data had good correspondence with the results of the static exploration, the depth error was generally less than 10%, and the velocity contour The map better reflects the distribution of soft soil in the exploration profile.