煤矿安全2012，Vol.43Issue(12)：157-160,4.
石港矿15109综放工作面初采期瓦斯涌出特征分析
Gas Emission Feature Analysis in No.15109 Fully Mechanized Caving Face of Shigang Coal Mine During Initial Mining Period
陈凯 1杨胜强 1刘亚东1
作者信息
- 1. 煤炭资源与安全开采国家重点实验室,江苏徐州221008／中国矿业大学安全工程学院,江苏徐州221008
- 折叠
摘要
Abstract
Gas emission was huge in fully mechanized caving face of Shigang Coal Mine,the problem of gas concentration exceeding limits threatened the safety production of this mine in initial mining period.Through analyzing the gas emission features in No.15109 fully mechanized caving face during initial mining period,it obtained that gas emission had a larger fluctuation in initial mining period,which was mainly caused by the activities of overlying coal and rock seams.Collapse of the direct roof and main roof led to a large number of gas emission of the adjacent seam in succession,it obtained the change law of ventilation gas volume,pumping gas volume of high level suction roadway and gas concentration of tail roadway in initial mining period.Gas concentration exceeding limits distance of tail roadway was 4.5~27.8 m.The gas emission features of No.15109 working face in Shigang Coal Mine in initial mining period also applied for other fully mechanized caving faces in the first mining area,and provided important parameters for the gas control in the initial mining period of working faces in other mining areas with the same overlying coal and rock seams.关键词
初采期/后伪高抽巷/瓦斯涌出量Key words
initial mining period/high position roadway/gas emission分类
矿业与冶金引用本文复制引用
陈凯,杨胜强,刘亚东..石港矿15109综放工作面初采期瓦斯涌出特征分析[J].煤矿安全,2012,43(12):157-160,4.
