Physical experiment of mine transient electromagnetic advanced detection
Abstract：Adopted brine as the uniform surrounding rock medium,used a glass tank as roadway space,and established the full space physical model of transient electromagnetic advanced detection.Based on the sectoral scan data acquisition modes of mine transient electromagnetic advanced detection,the advanced detection response characteristics of a good guide cylinder and a low resistance plate was simulated.Results show that：there are some response characteristics of the abnormal body in multi-channel profile,these characteristics relate to the space position and the space shape of the abnormal body;when the good guide cylinder is in front of the drivage face,the responses from three scanning directions on the face are strongest,and the late-time curves appear double peak;the response of the low resistance plate is different from the good guide cylinder,there is no obvious ＂step＂ change in the Multi-channel profile,the response value increasing trend is agreed with the plate.
Keywords：coal minetransient electromagnetic methodadvanced detectionphysical experimentdrivage face
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)