摘要
多年的煤矿井下应用证明,瞬变电磁法能够在煤矿相关地质工作上发挥重要作用,其原理是通过接收探测方向上的煤岩层因一次场信号激发的二次场信号,从而得到相关的地质信息。大量数据表明,如果在探测范围内煤岩层连续稳定时,可接收到随探测深度均匀衰减的二次场信号;如果探测范围内煤岩层出现断层构造时,必然会打破煤岩层原有的连续性及稳定性,这种变化将会在其激发的二次场信号中表现出来。通过研究这种断层所引起的二次场信号的变化规律,能够给瞬变电磁法在断层构造的解释上提供帮助,进一步为煤矿相关地质工作提供可靠依据。
Many years of application in coal mine proved that TEM can play an important role in coal mine related geological work.Its principle is to receive the secondary field signal of coal and rock strata in the detection direction due to the primary field signal,so as to obtain the relevant geological information.A large number of data showed that if the coal and rock strata within the detection range were continuous and stable,the secondary field signal with uniform attenuation of detection depth can be received;if the coal and rock strata within the detection range appear fault structure,the original continuity and stability of coal and rock strata will be broken,and this change will be reflected in the secondary field signal excited by it.By studying the change law of the secondary field signal caused by this kind of fault,it can help the transient electromagnetic method in the interpretation of fault structure,and further to provide a reliable basis for coal mine related geological work.
作者
邢楷
王克南
樊林林
廉玉广
Xing Kai;Wang Kenan;Fan Linlin;Lian Yuguang(Shanxi Jinmei Group Technology Research Institute Co.,Ltd.,Jincheng 048000,China;CCTEG China Coal Research Institute,Beijing 100013,China)
出处
《能源与环保》
2021年第3期81-86,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家自然科学基金青年基金资助项目(51704162)
天地科技股份有限公司科技创新创业资金专项资助项目(2018-TD-MS005)。
关键词
瞬变电磁法
掘进工作面
断层走势
电压特性
超前探测
transient electromagnetic method
heading face
fault trend
voltage characteristics
advanced detection
