浅埋煤层采空区自燃“三带”分布及划分研究  

Study on the Distribution and Division of Spontaneous Combustion in Shallow Buried Coal Seam Goaf Area

作　　者：肖正江 XIAO Zheng-jiang(Shanbula Coal Mine,Ordos 100083,China)

机构地区：[1]山不拉煤矿,内蒙古鄂尔多斯100083

出　　处：《化工管理》2022年第36期78-81,共4页Chemical Engineering Management

摘　　要：为掌握浅埋煤层采空区煤的自燃规律及分布特点,并提出针对性防治措施,以中煤山不拉煤矿36203综采工作面为对象,利用现场实测、数值模拟仿真分析等方法对采空区自燃“三带”的分布与氧浓度和漏风强度规律进行研究。主要研究结论如下:36203工作面散热带主要分布在回风侧采空区距离工作面0~35 m以内,距离工作面290 m以上的采空区深部为回风侧窒息带;工作面进风侧无氧化升温带,工作面易发生自燃的区域为工作面回风侧的侧空区;计算得出该矿工作面的最小安全推采速度为5.2 m/d。In order to master the law and distribution characteristics of coal spontaneous combustion in shallow buried coal seam goaf and put forward the prevention measures, operating at the 36203 distribution, we study the distribution of spontaneous combustion in the goaf and the oxygen concentration and air leakage intensity there, by way of on-site measurement and numerical simulation analysis. Main conclusions are as follows.The main distribution area of 36203 in the return area is within 0~35 m and is suffocating zone on the return side. There is no oxidation heating zone on the inlet side of the working face, and the area prone to spontaneous combustion is the side open area on the return side of the working face. It is calculated that the minimum safe mining speed of the mine is 5.2 m/d.

关 键 词：浅埋煤层采空区 现场实测 仿真分析 氧浓度 漏风强度 

分 类 号：TD325[矿业工程—矿井建设]