Numerical simulation on reasonable position of strike high roadway with FLUENT
Numerical simulation on reasonable position of strike high roadway with FLUENT
复制标题
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Lin Haife
中科院分区：
文献类型：
--
作者：
Lin Haife
为获得走向高巷的最佳布置位置，建立了采空区走向高巷瓦斯脱气输送模型，利用FLUENT软件分析了走向高巷布置不同水平回风巷距离、不同垂直煤层顶板距离时的脱气效果，数值模拟和实际应用结果表明，布置不同水平回风巷距离、不同垂直煤层顶板距离时，走向高巷的脱气效果最好，走向大巷位于回风巷和上部冒落带附近，平行于倾向转折线的距离为0.46倍带宽，垂直于冒落带边界的距离为2.8倍采高，走向大巷可消除工作面瓦斯超限，保证安全生产。
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.