走向高抽巷合理层位的FLUENT数值模拟  

Numerical simulation on reasonable position of strike high roadway with FLUENT

作　　者：林海飞[1] 李树刚[1] 索亮[1] 黄猛[1] 赵鹏翔[1] 

机构地区：[1]西安科技大学能源学院,陕西西安710054

出　　处：《辽宁工程技术大学学报（自然科学版）》2014年第2期172-176,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(51327007);国家自然科学基金资助项目(51104118;51174157;51204134);陕西省自然科学基础研究计划基金资助项目(2011JQ7015);陕西省教育厅专项科研基金资助项目(2013JK0865;2013JK0876)

摘　　要：为获取走向高抽巷抽采瓦斯的最佳位置,构建走向高抽巷条件下的采空区瓦斯运移模型.通过FLUENT数值模拟软件分析了高抽巷与回风巷不同平距,与煤层顶板不同垂距条件下,抽采瓦斯的效果.数值模拟和现场应用结果表明:高抽巷布置在回风巷附近,与倾向断裂线边界0.46倍带宽(回风巷侧裂隙带);且位于冒落带之上,与其边界垂高2.8倍采高时,效果最好,能有效解决工作面瓦斯超限问题,保证工作面安全回采.In order to obtain the optimum position of strike high roadway, the methane degasification and delivery model of strike high roadway in gob was built. The degasification effect of strike high roadway was analyzed with FLUENT software, which layout different horizontal distance to return entry, and the different vertical distance to the roof of coal seam. The results of numerical simulation and practical application show that the degasification effect is best, where is located near the return roadway and upper caving zone, the parallel distance from dip break line is 0.46 times zone width, and the vertical distance from caving zone boundary is 2.8 times mining height. The strike high roadway can eliminate the methane overrun in face, which guarantees the safety of production.

关 键 词：走向高抽巷 层流与湍流 质量守恒 动量守恒 FLUENT数值模拟 平距 垂距 瓦斯抽采 

分 类 号：TD721[矿业工程—矿井通风与安全]