TEM Detection Technology for Deep Buried Strip Goaf under Complex Conditions
The electromagnetic environment in suburban areas is relatively complex.In order to achieve effective exploration of deep buried coal mine strip goaf under complex conditions,TEM(transient electromagnetic method)is used for detection,which is flexible in construction equipment and sensitive to low resistance waterlogging goaf response.First introduces the complexity of surface exploration conditions in the exploration area,and then discusses the development law of the three zones of overlying rock in strip type goaf and the electrical characteristics of surrounding rock media.It analyzes the significant difference in electrical resistivity between the detection target body and the surrounding rock media,which enables it to have the prerequisite conditions for geophysical exploration.During the project implementation process,effective and targeted technical support measures should be taken during the design and construction stages to ensure the quality and reliability of the first-hand data obtained;secondly,in the data processing stage,electromagnetic noise interference correction technology and constraint inversion technology are adopted to improve the detection and resolution ability of geological anomalies,and achieve effective detection of target bodies.The drilling verification results are reliable,providing a strong basis for later treatment.
TEM detectionstrip goafelectromagnetic interference correctionconstrained inversion
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