基于测氡法的余吾煤矿采空区火区探测研究

Detection Research for Fire Exploration of Goaf in Yuwu Mine Based on Radon Measurement Method

为了探测出井下采空区煤自燃位置及圈划火区范围,分析了采空区发火机理和氡气性质,表明煤自燃温度升高,伴随着氡气的析出和垂直向上转移,在地面集聚氡气。基于此,通过探测地面氡气含量,即可间接地检测到井下采空区发火的大致范围或区域。结合井下巷道布置系统图,确定了余吾煤矿N12区域的发火区域范围。

To detect the underground coal spontaneous combustion position and drawing a circle of fire area, analyzes the mechanism of spontaneous combustion goal coal spontaneous combustion and radon gas-properties, show that the temperature increased, accompanied by radon precipitation and vertical transfer, radon concentrate on the ground. Based on this, through the detection of radon content on the ground, it can indirectly detect underground goaf combustion range or area. Combine the underground roadway layout system diagram and identify the fire range in Yuwu mine area N12.