摘要
以抚顺东露天矿为例,介绍了瞬变电磁法探测采空区的基本方法和原理.根据实测数据验证了瞬变电磁法在探测采空区时的可行性及诸多优点,并得出结论:在用大定源瞬变电磁法探测煤矿采空区时,发射线框长短边比应控制在10以内,而在距短边10m以内时,测点数据误差较大,不建议再布测点.
In the case of the Fushun East Open-pit Mine,the paper introduces the basic principle of coal gob detecting by large fixed TEM,and from the data obtained, the feasibility and advan- tages of large fixed TEM used in the coal gob detecting is validated. A conclusion is drawn that using this method, the ratio of the length of the long side of the wire frame to that of the short side should fall within 10; and also no measurement be made when the distance from the short side is less than 10m to avoid significant errors.
出处
《北方工业大学学报》
2013年第1期90-94,共5页
Journal of North China University of Technology
基金
国家自然科学基金项目(41172250)
国家十二五科技支撑项目(2012BAK09B06)
北京市创新人才项目(PHR201006118)
北方工业大学重点项目
关键词
大定源
瞬变电磁法
采空区
电磁感应
large fixed
transient electromagnetic method（TEM）
coal gob
electromagnetic induction
