Study on the air leakage pattern of Y-type ventilation mining area along the air-retention lane in Wangzhuang coal min
Liu Junwei1, Li Chaoyue2
1. Wangzhuang Coal Mine, Lu'an Chemical Group, Changzhi 046031, China; 2. School of Safety and Emergency Management Engineering,Taiyuan University of Technology, Taiyuan 030024, China
To reveal the air leakage law in goafs under Y-type ventilation of gob-side entry retaining, taking the 91-105 working face of Wangzhuang Coal Mine as the engineering background, field tests were carried out twice by adopting the instantaneous release method of SF6 tracer gas when the working face advanced to approximately 250 m and 500 m away from the open-off cut. The results show that the air leakage scope in goafs is extensive under Y-type ventilation. After reaching the gob-side entry, the air leakage flow mainly seeps inward along the goaf side of the entry, and the air leakage velocity increases closer to the working face.
刘军伟1，李超跃2. 王庄煤矿沿空留巷Y型通风采空区漏风规律研究[J]. 煤炭与化工, 2026, 49(9): 108-112.
Liu Junwei1, Li Chaoyue2. Study on the air leakage pattern of Y-type ventilation mining area along the air-retention lane in Wangzhuang coal min. CCI, 2026, 49(9): 108-112.
