Application of self-ramming gangue filling hydraulic support in deep mine

Aiming at the problems of larger buried depth, larger thickness of coal seam under the village,which is hard to mine in 12212 working face of Xingdong mine.In this paper, the difficulties of mining and relationship between hydraulic support and surrounding rock of gangue filling mining are studied by methods of theoretical analysis.Based on related research, the principle and requirements of the type selection of the self-ramming gangue filling hydraulic support are determined, and the parameters such as support strength and working resistance of the hydraulic support are calculated through theoretical method, then field application is carried out.The results show that the self-ramming gangue filling hydraulic support has been successfully applied, and surface subsidence has been effectively controlled by gangue filling technology in deep mine, and the level of surface damage after mining is level 1, basically without damage.