煤巷综掘面瓦斯流场数值模拟及瓦斯涌出构成分析  

Numerical simulation of gas flow field and source analysis of gas emission in fully mechanized excavation face

作　　者：四旭飞[1] 徐刚[2] 张天军[3] 

机构地区：[1]山西潞安环保能源开发股份有限公司生产处,山西襄垣046204 [2]西安科技大学能源学院,陕西西安710054 [3]西安科技大学理学院,陕西西安710054

出　　处：《陕西煤炭》2013年第6期7-10,14,共5页Shaanxi Coal

基　　金：国家自然科学基金资助项目(51174158);西安科技大学博士启动基金资助项目(2012QDJ021)

摘　　要：在对综掘工作面瓦斯涌出特点进行分析的基础上,通过数值模拟和现场实测得到了综掘工作面的瓦斯浓度分布特征,建立了综掘工作面瓦斯涌出预测模型,并对瓦斯涌出构成进行了分析。结果表明:综掘工作面15 m范围内可划分为折返区、不稳定区和稳定区三个区域;随着巷道长度的增加,掘进落煤瓦斯涌出比例减少,但存在一个极限值,为综掘工作面的瓦斯治理指明了方向。based on the analysis of gas emission characteristics in fully mechanized excavation face, obtained the gas concentration dis- tribution characteristics of fully mechanized excavation face by way of numerical simulation and field measurement, established gas e- mission prediction model and analyzed gas emission composition. The results showed that 15m range of the fully mechanized excavation face can be divided into the reentry area, unstable area and stability area and with the increase of the roadway length, the proportion of gas emission from excavation drop-coal reduced, but there is a limit value which pointed out the direction for gas control in fully mecha- nized excavation face.

关 键 词：综掘工作面 瓦斯浓度 瓦斯涌出 风流 

分 类 号：TD712.53[矿业工程—矿井通风与安全]