探地雷达宽角反射图形拟合方法  

The graph fitting method of wide angle reflection of GPR

作　　者：蔡连初 缪念有[2] CAI Lian-Chu;MIAO Nian-You(Zhejiang Huadong Construction Engineering Co.,Ltd.,Hangzhou 310014,China;Huadong Engineering Co.,Ltd.,Hangzhou 310014,China)

机构地区：[1]浙江华东建设工程有限公司,浙江杭州310014 [2]华东勘测设计研究院,浙江杭州310014

出　　处：《物探与化探》2021年第1期239-244,共6页Geophysical and Geochemical Exploration

摘　　要：探地雷达共中心点(CMP)法仅用于局部速度测试,为使用宽角反射法进行剖面探测,可固定一个雷达天线而将另一个天线沿测线移动,从而获取整个地质界面的反射信号。本文提出宽角反射剖面探测方法,基于平直岩层界面导出其反射信号的关系式,并开发出解释软件,可精确计算岩层几何参数和层速度,从而进行地质分层。The Geological Radar Common Middle Point(CMP)method is only used for local velocity testing.For the purpose of using a wide-angle reflection method for profiling,one radar antenna can be fixed and another antenna moves along the line of measurement to obtain the reflection signal of the entire geological interface.In this paper,the method of wide angle reflection profile detection is proposed.The relations of reflection signals are derived based on the interface of straight rock formations,and the interpretation software is developed to accurately calculate the geometric parameters and layer velocity of rock formations,so as to carry out geological stratification.

关 键 词：探地雷达 宽角反射 图形拟合 时距曲线 层速度 

分 类 号：P631[天文地球—地质矿产勘探]