综放采空区瓦斯渗流规律数值模拟研究  

Study on Numerical Simulation of Gas Seepage Regularity in Gob of Fully Mechanized Caving Face

作　　者：李树刚[1] 张伟[1] 邹银先 林海飞[1] 徐红 

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]新疆煤矿安全监察局,新疆乌鲁木齐830000

出　　处：《矿业安全与环保》2008年第2期1-3,7,共4页Mining Safety & Environmental Protection

基　　金：国家自然科学基金项目(50574072);陕西省教育厅专项科研计划项目(06JK235)

摘　　要：根据综放采空区破碎岩体的垮落特征,将其分为自然堆积区、载荷影响区和压实稳定区等3个区域,分析计算了各区的空隙率。在此基础上,结合采空区瓦斯渗流的控制方程,利用CFD软件建立了采空区瓦斯渗流三维非均质数值模型,得到了漏风条件下有无瓦斯抽放措施的采空区瓦斯涌出规律,对防治综放工作面瓦斯超限具有一定的理论价值及实践指导意义。In this paper,the gob of a fully mechanized caving face was divided into naturally accumulated zone,pressure effecting zone and compaction stability zone according to the caving characteristics of the fractured rock in the gob,and analysis was made on the porosity of each zone.Based on this analysis,a 3-D inhomogeneous numerical model on gob gas seepage was set up according to gob gas seepage control equation and with CFD software,thus the gas emission regularity in the gob of a fully mechanized caving face with or without gas drainage measures in the case of air leakage was obtained,this has a certain theoretical value and practical guiding significance for controlling disallowed gas concentration in fully mechanized caving face.

关 键 词：瓦斯渗流规律 综放采空区 FLUENT数值模拟 

分 类 号：TD712.51[矿业工程—矿井通风与安全]