Closed barrier fire extinguishing method using coal gangue

The invention discloses a closed barrier fire extinguishing method by using coal gangue, which comprises the following steps: step 1, implementing a coal seam closed barrier structure layer, including coal seam closed barrier by using coal gangue and closed barrier of a goaf; 2, a platform sealing barrier structure layer is implemented; comprising a grouting cooling blocking structure layer and a coal gangue clay blocking structure layer. 3, a slope sealing and blocking structure layer is implemented; 4, implementing a water interception and drainage system; 5, implementing a monitoring system; and step 6, implementing a vegetation recovery technology. According to the invention, aiming at the inclined coal seam, coal gangue widely distributed in abandoned mines is taken as a raw material, and through the comprehensive sealing and blocking of the structure, a set of control-control combined sealing and blocking fire extinguishing method is formed, and the control is mainly used, and the detection and control