大兴矿两翼分区域通风运输大巷风流稳定性研究
发布时间：2018-09-19 16:12
【摘要】：大兴矿两翼分区通风,南北运输大巷风流不稳定,可能引起南北运输大巷中存在瓦斯积聚、甚至超限,也可能引发两翼采区内采煤工作面的风量变化,或造成采空区漏风体系内压差的变化,导致或加剧采空区遗留煤自燃的危险,影响工作面的顺利回采。为解决南北运输大巷风流不稳定问题,通过大兴矿现场实际观测,得出大兴矿井巷通风基础数据和参数,建立大兴矿全矿井巷道系统模型。运用TF1M3D仿真软件对大兴矿通风系统进行仿真分析,得出在地表大气温度33℃,711工作面在末采位置、1号调节风门关闭、2和3号调节风门面积为5.1m2时南北运输大巷风流停滞,继续增大2和3号调节风门面积后风流发生反向。为有效控制大兴矿南北运输大巷的风流稳定性提供了参考。
[Abstract]:Ventilation on the two wings of Daxing Coal Mine and unstable wind flow in the north-south transport roadway may cause gas accumulation in the north-south transport roadway, or even exceed the limit, and may also lead to changes in the air volume of the coal mining face in the two-wing mining area. Or cause the change of pressure difference in the system of air leakage in goaf, cause or aggravate the danger of spontaneous combustion of coal left over in goaf, and affect the smooth mining of working face. In order to solve the problem of unstable air flow in the north-south transportation roadway, the basic data and parameters of ventilation in Daxing mine are obtained through the field observation of Daxing mine, and the model of the whole mine roadway system in Daxing Mine is established. The ventilation system of Daxing Coal Mine is simulated and analyzed by using TF1M3D simulation software. It is concluded that the air flow in the north and south transport roadways is stagnant when the air flow in the north and south roadways is stagnant when the surface air temperature is 33 鈩，
本文编号：2250650
[Abstract]:Ventilation on the two wings of Daxing Coal Mine and unstable wind flow in the north-south transport roadway may cause gas accumulation in the north-south transport roadway, or even exceed the limit, and may also lead to changes in the air volume of the coal mining face in the two-wing mining area. Or cause the change of pressure difference in the system of air leakage in goaf, cause or aggravate the danger of spontaneous combustion of coal left over in goaf, and affect the smooth mining of working face. In order to solve the problem of unstable air flow in the north-south transportation roadway, the basic data and parameters of ventilation in Daxing mine are obtained through the field observation of Daxing mine, and the model of the whole mine roadway system in Daxing Mine is established. The ventilation system of Daxing Coal Mine is simulated and analyzed by using TF1M3D simulation software. It is concluded that the air flow in the north and south transport roadways is stagnant when the air flow in the north and south roadways is stagnant when the surface air temperature is 33 鈩，
本文编号：2250650
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