关键词: 高瓦斯, Y型通风, 高抽巷, 围岩控制, 联合支护

Abstract: In order to study the feasibility of Y-type ventilation system formed by reserving high extraction roadway along goaf side, this paper studies the rational layout of high extraction roadway and the stability of surrounding rock by means of field investigation, theoretical analysis, numerical simulation and field industrial test, taking the engineering geological conditions of 1112(1) working face of Zhuji Mine as background. The results show that the high-pumping roadway should be arranged in the sandy mudstone 15-35 m above the 11-2# coal seam, and the optimum value of different horizontal distance between the high-pumping roadway and the track roadway is 20 m; the high-pumping roadway is supported by U-shaped shed and anchor cable, and the anchor cable is supported by the maximum scheme of one time support; the on-site mine pressure observation and the anchor cable resistance monitoring knot The results show that the surrounding rock reinforcement effect of high extraction roadway is good, and the anchor cables play a more balanced role in its support efficiency, ensuring the safe and efficient production of the mine.