摘要
通过在丁集矿1282(3)综采工作面采空区进行现场埋管观测,得到了采空区内不同测点距工作面不同距离处的温度和O2,CO,CH4气体浓度等参数,分析得出了采空区内O2浓度的分布规律。依据采空区"三带"划分的方法对丁集矿1282(3)工作面采空区自燃危险区域进行了划分,确定了1282(3)工作面采空区"三带"的范围,并根据氧化升温带宽度及浮煤最短自然发火期确定了工作面的极限推进速度,保证了工作面的安全回采。
By on-the-spot observation with buried pipe in gob of 1282 （3） full-mechanized mining face in Dingji Colliery, temperatures of difference places from mining face and O5 , CO and CH4 concentrations were obtained, and distribution rule 02 concentration in gob was analyzed. Gob spontaneous combustion danger area was divided with ＂three-zone＂ method and every zone range was determined. For safe mining, limit mining speed was present by the width of oxidation zone and the shortest spontaneous combustion time.
出处
《煤矿开采》
北大核心
2013年第2期91-93,共3页
Coal Mining Technology
基金
国家自然科学基金资助项目:爆破扰动下高瓦斯低透气性煤体的动态损伤本构关系及应力波传播特征(51204007)
关键词
采空区
三带
自然发火
极限推进速度
gob
three-zone
spontaneous combustion
limit mining speed
