采空区氧化自燃带宽度与工作面推进速度关系的数值模拟  

Numerical Simulation of Relation between Oxidation-combustion Zone Width in Gob Area and Face Advance Velocity

作　　者：李尚国[1,2] 陆伟[1,2] 梁林秀 

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中煤科工集团重庆研究院,重庆400037 [3]神华乌海能源有限责任公司路天煤矿,内蒙古乌海016000

出　　处：《矿业安全与环保》2011年第5期10-12,7,共3页Mining Safety & Environmental Protection

摘　　要：基于采空区渗流方程和多孔介质动量方程,应用FLUENT软件模拟了采空区漏风风速变化情况,结合采空区自燃"三带"划分标准,得出采空区氧化自燃带宽度与工作面推进速度的关系:随着工作面推进速度提高,进风侧、回风侧、工作面中部氧化自燃带与工作面距离都将增大;工作面中部氧化自燃带与工作面距离增幅较大,进风侧、回风侧氧化自燃带与工作面距离增幅较小。In this paper,the distribution of the air leakage velocity in the gob was simulated by using FLUENT software according to the seepage equation of the gob and the momentum equation of the porous medium,and based on the partitioning criterion of 'three spontaneous combustion zones' in the gob,the relation between the oxidation-combustion zone width in the gob and the face advance velocity was obtained: with the increase of the face advance velocity,the oxidation-combustion zone on the air-intake side,air-return side and at the middle of the face as well as the distance to the face will increase;the increment of the oxidation-combustion zone at the middle of the face and the distance to the face was relative large,and the increment of the oxidation-combustion zone on the air-intake side and air-return side and the distance to the face was rather small.

关 键 词：采空区 漏风风速 氧化自燃带 推进速度 

分 类 号：TD752.2[矿业工程—矿井通风与安全]