Abstract:
The coal seams in the Binchang mining area are deeply buried, and the horizontal stress of surrounding rock in each mine is greater than the vertical stress, especially in the excavation working face.The formation of the surrounding rock is significantly different from that of coal mines in northern Shaanxi such as Yubei, resulting in difficulties in supporting the mining way, low standardization level, frequent repairs, and tedious manual labor in harsh cyclic operations.This has caused many risk points in construction organization and safety operations, and the single entry level is low, which even affects the normal connection of mines.In order to solve such problems, Mengcun Coal Mine adopts Jiuyi excavation-anchoring integrated machine rapid tunneling equipment.This system is mainly composed of EJM2×170 excavation and anchoring machine+DZQ100/95/30 bridge-type transfer belt+DWZY1000/1500 belt self-moving machine tail+DSJ100/100/2/2×200 kW long-distance material transportation machine.The construction process has been further optimized for this equipment, which significantly reduces the labor intensity of workers, By continuously improving the forming quality and single entry level of the roadway, the goal of “one-time support, never repair” has been achieved, effectively promoting the continuity level of the mine.