复杂条件下的地下管线探测模拟  

Simulation of underground pipelines under complicated condition

作　　者：赵欣[1] 王希良[1] 刘珍岩[2] 习建军[2] 李占岭[2] 

机构地区：[1]石家庄铁道大学,河北石家庄050043 [2]河北省电力勘测设计研究院,河北石家庄050031

出　　处：《物探与化探》2014年第6期1307-1312,共6页Geophysical and Geochemical Exploration

摘　　要：近间距、非金属地下管线的探测是当今管线探测的两大难题,再加上复杂的层状介质及干扰因素的影响,使得管线探测的难度增加,雷达剖面上目标体异常的判断比较困难。为了定位目标管线,提高解释的精度,针对两大探测难题及干扰因素,运用探地雷达模拟软件Gpr Max,结合Matlab语言建立复杂层状条件下的管线模型进行模拟研究。模拟结果表明:250 MHz天线频率下埋深1 m的管线横向分辨率为50 cm,金属管线和非金属管线的雷达反射波图像不同,可根据非金属管线的雷达剖面图像判断出管线充填物质和管径大小。模拟结果对实际复杂地下管线探测可起到指导作用。The underground pipeline detection with small intervals and non metal are two major problems in current pipeline detection, plus the complicated layered medium and the influence of interference factors, thus increases the difficulty of the pipeline detection, and it is difficult to judge target abnormal bodies on radar section. In order to locate the target line and improve interpretation accuracy, in view of the two big detection problems and interference factors, we uses GprMax software and Matlab language to simulate pipeline models under complicated layer condition. The simulation resuhs indicates that the pipeline lateral resolution of 250 MHz antenna frequency is 50 cm in the ease of lm depth. Radar reflection wave image of mental and non mental are different.Therefore,based on these information to judge the filling material and the size of pipeline. The results of simulation can play a substantive role in actual complicated underground pipelines detection.

关 键 词：管线探测 近间距 非金属管线 探地雷达 GPR MAX 正演数值模拟 

分 类 号：P631[天文地球—地质矿产勘探] TU195.3[天文地球—地质学]