井间电磁波技术在居民区地下洞穴调查中的应用  

Application of Crosshole Electromagnetic Wave Computerized Tomography in the Investigation of Underground Caves on Residential Areas

作　　者：罗传华[1,2] 昌彦君[2] 陶喜林[3] 李永涛[2] 李彦军[2] 

机构地区：[1]安徽省地矿局321地质队,铜陵244031 [2]中国地质大学地球物理与空间信息学院,武汉430074 [3]中国地质大学机械与电子信息学院,武汉430074

出　　处：《工程地球物理学报》2010年第1期78-83,共6页Chinese Journal of Engineering Geophysics

摘　　要：井间电磁波技术具有分辨力高、施工方便,相对其它电磁法受地面电磁干扰较小的特点。针对矿区居民区房屋出现裂缝的环境地质问题,文中给出了利用井间电磁波技术开展地下洞穴调查中的应用案例。分别介绍了井间电磁波技术的基本原理、野外方法技术、数据处理、CT剖面特征及地质分析,最终结合工程钻孔取芯结果,基本查清了该区的洞穴发育分布情况。对该区地基稳定性进行了合理的评价,为后期房屋地质灾害治理提供了必要的依据。Crosshole electromagnetic wave CT technology has many characteristics, such as high resolution, easy implementing, less affected by electromagnetic interference on the ground than other electromagnetic methods. To the environmental geological problem of the cracks on residential houses in the mining area, this paper gives an investigation case of using cross--hole electromagnetic wave computerized tomography on the survey of underground caves. It introduces the principle of crosshole electromagnetic CT technology, field- work techniques, data processing, section CT features and geological analysis, and in- tegrates the results of engineering drilling borehole to find out the distribution of caves. The work gives a reasonable assessment for the ground stability in the area, and it also provides the necessary materials to bring geological disasters under control in the future.

关 键 词：井间电磁波CT 洞穴 地基稳定性 居民区 

分 类 号：P631[天文地球—地质矿产勘探]