WATER-PRESERVING MINING METHOD FOR CLOSE-DISTANCE COAL SEAM GROUP

摘要

A water-preserving mining method for a close-distance coal seam group. A defining range for all the parameters capable of realizing water-preserving mining is obtained according to fixed parameters, including coal seam burying depth and the distance between two coal seams of close-distance coal seams and the mining depths of the upper and lower coal seams. The parameters provided by the method are concise, which can provide guidance for the water-preserving mining of the similar close-distance coal seams in western mine areas and have very strong practicability.