After-combustion preventing gangue pile platform with checkerboard-shaped ditches, and grouting method thereof

The invention relates to a method for preventing after-combustion of gangue piles, and concretely relates to an after-combustion preventing gangue pile platform with checkerboard-shaped ditches, and agrouting method thereof. The method for preventing after-combustion is characterized in that the easy deforming, fracturing and spontaneous combustion parts of the gangue pile platform and its surrounding gentle slope are trenched in a checkerboard manner after the fire of the spontaneous combustion gangue piles is extinguished, and are grouted. The method has the advantages of easiness in operation, significant effect, long lasting time, solving of the spontaneous combustion prevention problem of the gangue pile platform, improvement of the integral stability of a gangue dump, and further solving of the selection problem of a grouting material and the monitoring of the temperature and the processing of a backfill layer after the grouting. 本发明涉及种对矸石堆体防复燃的方法，更具体而言，涉及种棋盘状开沟的防复燃矸石堆体平台及其注浆方法。具体是在矸石堆体平台以及平台四周缓坡面，容易变形、