基于非均匀介质的城市隧道渗水检测地质雷达数值模拟  

imerical simulation of GPR for water seepage detection of urban tunnel based on inhomogeneous mediun

作　　者：陈熙国 CHEN Xiguo(Changsha City Bridge and Tunnel Affairs Center,Changsha 410000,China)

机构地区：[1]长沙市城市桥梁隧道事务中心,湖南长沙410000

出　　处：《中国高新科技》2023年第3期78-80,共3页

摘　　要：随着城市建设的日新月异,因隧道相比桥梁而言能够更好地利用地下空间,导致城市交通出现越来越多的隧道。我国较多城市都建立在河流附近,以至于过江隧道在城市交通中的应用越来越广泛,如长沙的营盘路隧道、南湖路隧道。过江隧道由于位于江底,隧道渗水会带来一系列的隧道病害,因此对过江隧道的渗水检测尤为重要。文章从非均匀介质的地质雷达探测正演出发,总结富水区域在雷达扫描中的特征,说明该正演方法的有效性,这为隧道渗水病害检测的实际雷达扫描图中富水体的判定提供了一个更为可靠的依据。With the rapid development of urban construction,tunnels can make better use of underground space than bridges,resulting in more and more tunnels in urban trafic.Many cities in China are built near rivers,so that river crossing tunnels are more and more widely used in urban traffic,such as Yingpan road tunnel and nanhu road tunnel in Changsha.Because the river crossing tunnel is located at the bottom of the river,the water seepage of the tunnel will bring a series of tunnel diseases,so the water seepage detection of the river crossing tunnel is particularly important.Starting from the forward modeling of GPR detection in heterogeneous media,this paper summarizes the characteristics of water rich area in radar scanning,and illustrates the effectiveness of the forward modeling method.This provides a more reliable basis for the determination of rich water in the actual radar scanning map of tunnel seepage disease detection.

关 键 词：非均匀介质 地质雷达 数值模拟 CPML 渗水检测 

分 类 号：U456[建筑科学—桥梁与隧道工程]