摘要
地下采空区的存在严重威胁着人们正常的生产生活,选取有效的方法对采空区探测有着重大的现实意义.本文探讨了瞬变电磁法和EH-4电导率成像法的方法技术以及在某钼矿采空区的应用效果.瞬变电磁法观测的是纯二次场,所以分辨率高,特别是对低阻异常体反应灵敏.EH-4电导率成像系统探测深度大,适用于各种复杂地形,可以有效的减少地形的影响,因此结合这两种方法对采空区进行综合探测,可以相互补充,提高对采空区评价的准确性.
The exist of underground mine＆out areas seriously threaten human production and life, so it has a real meaning to explored the mine＆out areas by effective measures. The paper introduces the application of Transient electromagnetic method（TEM） and EH-4 to the exploration of the mined-out areas. Because TEM measures the secondary field signal, it has high resolution, especially in low resistivity bodies. EH 4, which possesses very strong adoptability for the site and lager detecting depth, is reducing topographic influence efficiently, combing the two techniques, we can make comprehensive exploration to mined-out areas, therefore, the combination of these two methods to detect the mined-out area, we can complement each other to improve the accuracy.
出处
《地球物理学进展》
CSCD
北大核心
2013年第3期1541-1546,共6页
Progress in Geophysics
关键词
瞬变电磁法
EH-4
采空区
transient electromagnetic method, EH-4, mined-out area
