Study on surrounding rock control technology of roadway with high in-situ stress and compound strata in deep coal mine

According to the difficulties of roadway surroundings control with high in-suit stress in deep coal mine,such as large integrate deformation for long time,serious local broken and so on,the suitable supporting forms and scientific surroundings control methods of roadway were researched.The typical roadway with large-dip angle and compound strata was selected as engineering background in deep coal mine.Some main supporting design ideas were determined by systematic geo-mechanical on-site tests,analyzing the characteristics of surroundings deformation and its failure zones.The engineering practice proved that the optimized supporting manners and parameters could make roadway surroundings in stable state,reduce roadway repair tasks and achieve effectively supporting by once for roadway surroundings in deep coal mine.