浅析云南富煤二矿瓦斯分布规律及其对煤层开采的影响

Analysis of gas distribution rule and its influence on coal seam mining in Yunnan Fumeierkuang

富煤二矿为高瓦斯矿井,其原因有两个方面:其一,由于该区煤系及上覆地层泥岩类渗透性差,封闭条件好,各煤层均属烟煤,瓦斯生成条件好。其二,矿床围岩富水性弱,地下水活动缓慢,有利于瓦斯赋存。在矿井建设和生产时,该矿区的主采煤层有产生瓦斯、煤突出的危险。应在设计和开采时加以重视。

Fumeierkuang is a highly gaseous mine.Firstly,the mine has good gas generating conditions,because the mudstones in coal and overlying strata of the mine has poor permeability and closed condition and bituminous coals.Secondly,on account of weak-water content of surrounding rock,groundwater activity slowly,it＇s gas＇ s saving is easy.In mine construction and production, the mine＇s flagship working bed risk of gas and coal is prominent.We should pay attention to the gas in the design and production.