The accumulated water in the goaf of coal mine is a serious threat to the safety of coal mine production. In order to effectively detect the accumulated water in the goaf within the mine area and to find out the fault conductance water content, the ground transient electromagnetic method and direct current sounding are used to detect. As the buried depth of coal seam in the area is 600m~900m, current test, wire frame size test, frequency size test and overlay times were carried out. Finally, construction parameters were selected as 720m×720m wire frame, 20A current, transmission frequency 6. 25Hz, overlay times 256 times and large constant source center loop device was used in the device. According to the test and research, it is found that the depth of the blind area is about 80m based on the size of wire frame L, the measured depth h and the turn-off time t, combined with the measured data. In order to detect the water content of quaternary system and weathering crust in the detection area, the direct current sounding work has been carried out. The results show that: By using the collected TEM data, Voxler platform for 3D data modeling and topographic data for bleaching, the 3D apparent resistivity model is studied, and the spatial distribution characteristics of goaf and water-rich area are intuitively displayed. The results of measurement are more intuitive, and the reliable and real basis is provided for the later drilling layout and coal mine water control work.

Lei Wang. Application of Comprehensive Geophysical Rospecting Method in the Detection of Goaf in Shanxi Wuyang Coal Mine. Academic Journal of Architecture and Geotechnical Engineering (2024) Vol. 6, Issue 3: 68-73. https://doi.org/10.25236/AJAGE.2024.060311.

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