摘要
根据五轮山煤矿8煤的高变质煤质特征和瓦斯突出情况,采用顺层钻孔预抽本煤层瓦斯、采空区埋管抽采和高抽巷抽采上临近层及采空区瓦斯的治理措施,对各抽采措施的对比分析表明,高抽巷和穿层钻孔对采空区和裂隙区以及上邻近层卸压瓦斯的抽采是最有效的瓦斯治理措施。高抽巷的抽采浓度是顺层钻孔的3倍左右,而抽采纯量远高于其他抽采措施。高抽巷抽采瓦斯是高变质低透气性煤层瓦斯治理的最佳措施。
According to the characteristics of high metamorphic coal and gas outburst in NO. 8 coal mine of Wulunshan mine,control measures are used,including advanced draining along the boreholes in the coal seam,gob drainage tube,and the high drainage roadway drilling through strata contrast. The results show that the measures of high drainage roadway and boreholes are the most effective measures to extract the gas of the gob and the upper layer. Extraction concentration of high drainage roadway is about 3 times to the bedding drilling,and the extraction of pure was much higher than other drainage measures. High drainage roadway is the effective measures in gas control of high metamorphic and low permeability coal seam.
出处
《煤矿开采》
北大核心
2015年第6期105-107,122,共4页
Coal Mining Technology
关键词
高抽巷
高变质煤层
瓦斯抽采
效果对比
high drainage roadway
high metamorphic coal seam
gas drainage
effect comparison
