氡气在采空区及采动裂隙探测中的应用

Mining-induced fractures caused by coal mining process communicate the surface in shallow coal seam, easily causing a series of environmental and safety issues which may arouse huge economic losses. And only mastering the expansion and distribution characteristics of mining-induced fractures could it be possible to solve the problems effectively. Because of the special physical and chemical qualities and features,Radon has been put into use of the survey of coal goafs which has made great effects. In consideration of this, the paper chooses a new low dibon measurement of investigating Radon-α ray detcetion , delving mining-induced fractures high-sensitively and mastering their different characters scientifically. By choosing the 1203 working face of da-liuta coal mine as a prototype to conduct the physical simulation experiment of solid and gas coupling similar materials, the feasibility of radon in the survey of mining-induced fractures of the shallow seam longwall face has been verified.