基于天然源面波地形校正的堰塞体探测  

Detection of barrier body based on terrain correction of natural source surface waves

作　　者：刘海涛[1] 徐复兴[1] 熊友亮 李欢[1] LIU Haitao;XU Fuxing;XIONG Youliang;LI Huan(Changjiang Reconnaissance Technology Research Institute of Ministry of Water Resources,Wuhan 430011,China)

机构地区：[1]水利部长江勘测技术研究所,湖北武汉430011

出　　处：《水利水电快报》2024年第7期41-45,共5页Express Water Resources & Hydropower Information

基　　金：国家重点研发计划项目(2018YFC1508600)。

摘　　要：为提高堰塞体的天然源面波探测成果中面波速度值的准确性及计算面波速度记录点空间位置,改变以往处理模式中假定各检波器在同一高程的前提,在面波数据处理中加入台阵中各检波器的高程值,并采用最小二乘法计算各测点的面波速度记录点空间位置,进行地形校正处理,从而提高面波速度值和面波速度记录点空间位置的准确性。将此天然源面波地形校正处理技术应用于唐家山、叠溪、松坪沟等堰塞体探测中,结果表明:经地形校正处理后,探测平均误差由8.8%降低至4.3%,并使现场检波器台阵布置灵活性提高,提升了探测效率。在目前没有自带地形处理功能的面波处理软件情况下,该技术实现了对面波数据处理结果的地形校正,提高了面波勘探精度。In order to improve the accuracy of the surface wave velocity values in the results and to calculate the spatial position of the surface wave velocity recording points,the premise of assuming that each geophone was at the same elevation in the previous processing mode was changed,and the surface wave data processing was added to each geophone in the array.The least square method was used to calculate the spatial position of the surface wave velocity recording point of each measuring point,and the terrain correction process was performed to improve the accuracy of the surface wave velocity value and the spatial position of the surface wave velocity recording point.The technology was used in the detection of barrier bodies of Tangjiashan,Diexi,Songpinggou,etc.The results showed that the average error of detection was reduced from 8.8% to 4.3% after terrain correction processing,the flexibi-lity of field geophone array layout and the detection efficiency were improved.In the absence of surface wave processing software with built-in terrain processing function,the natural source surface wave terrain correction processing technology had achieved terrain correction of surface wave data processing results,improving the accuracy of surface wave exploration.

关 键 词：堰塞体 天然源面波 地形校正 瑞雷波 串行相关 

分 类 号：P631.4[天文地球—地质矿产勘探]