Mathematical simulation and experiment of CBM detection

Abstract

To accurately detect the underground Coal Bed Methane (CBM) accumulation in coal mining face by mine radio wave perspective method, this thesis simulated the characteristic curve of received values through coal seam, and discussed the feasibility of CBM. We conducted experiments in Chinese mine. The study concluded that the existence of CBM could cause abnormal area. Compared to the normal reception curve, the abnormal curve of CBM showed a much smaller value, and the attenuation was larger in middle area, smaller on both sides. The pattern formation was a "saddle" shape. Radio wave penetration method could be a more reliable detection for CBM in underground coal mine.