Jinjiaqu coal mine has complex hydrology occurrence condition,with 590m^3 / h normal water inflow and 725. 76 m^3 / h maximum water inflow. On the basis of hydrological survey, through the scientific analysis of the way of mine water filling,the composition and size of water inflow,this paper reasonablly main drainage system and equipment of mine,+690m level anxiliary drainage systems and equipment, determines vertical drainage system of concentrated drainage roadway in No. 13 mining area;The maximum drainage capacity of the mine is 1038m^3 / h, and the overall drainage system meets the requirements of mine safety production. According to the size of mine inflow, the mine water treatment system is built on the ground, the mine water treatment capacity is up to 1200m^3 / h, the depth treatment scale is up to 100m^3 / h, the daily treatment capacity is up to 1680m^3 / d, the indicators are all controllable, COD is controlled at 2. 2mg/ L~12. 83mg/ L, ammonia nitrogen is controlled at 0. 9 mg/ L~1 mg/ L,suspended matter is controlled at 2.4 mg/ L~9.54NTU, which is up to the water quality standard of the mine water discharge.
Journal of North China Institute of Science and Technology