地质雷达在隧道检测中空洞图像分析  

Analysis of Cavity Image in Tunnel Detection with Geological Radar

作　　者：蔡建华[1] 刘亮红[1] 李庚[1] 

机构地区：[1]江西省地矿局九〇二地质大队,新余338000

出　　处：《价值工程》2016年第2期208-210,共3页Value Engineering

摘　　要：空洞是隧道检测中非常常见,本文针对隧道衬砌中经常出现的空洞的基本形状进行研究。以探地雷达理论为基础,运用时域有限差分法,建立隧道衬砌中三角形、矩形和圆形空洞的二维模型,进行探地雷达二维正演模拟。利用制作圆形空洞、直角三角形和正方空洞模型,依次将模型分别埋于砂槽中,应用探地雷达探测。数值模拟和实测结果表明:探地雷达可以探测到三角形、矩形和圆形空洞的存在。The cavity is often seen in tunnel inspecting. the thesis is focus on basic shape of cavity in tunnel lining. On the basis of ground penetrating radar（GPR） theory, triangle, rectangle and circular cavity 2-dimension models were builded. The typical cavities were done 2D-forward simulation by the finite difference time domain method. Circular cavity right triangle and rectangular cavities were made.We detected the right triangle, rectangular and circular cavity which was installed sequence at the same position in a same sand launder by GPR. Numeric and physical simulation results show： GPR could detect triangle, rectangular and circular cavities.

关 键 词：探地雷达 空洞 形状 隧道检测 

分 类 号：P63[天文地球—地质矿产勘探]