通风条件对综掘面控尘气幕的影响

发布时间：2018-04-08 21:59

本文选题：通风条件　切入点：综掘面　出处：《中国矿业大学学报》2015年04期

【摘要】：为了有效地控制综掘面高浓度粉尘污染,应用FLUENT软件数值模拟通风条件影响综掘面控尘气幕形成与作用的规律.结果表明:压风口与迎头距离、压抽比、压风筒及抽风筒直径越大,抽风口与迎头距离、压风量越小,越利于形成控尘气幕,但压抽比越小,控尘气幕的风速越大;根据数值模拟结果,拟合了50mg/m3以上高浓度粉尘扩散距离与各通风条件的关系式,确定了压抽比为0.75时,控尘气幕作用效果较佳,为控尘气幕形成与作用的最优通风条件,并将其进行了工程应用.实测值与数值模拟值基本一致,高浓度粉尘被控制在距迎头5m的无人作业区域内.
[Abstract]:In order to effectively control the high concentration dust pollution in fully mechanized excavating face, FLUENT software was used to simulate the law that ventilation condition affected the formation and action of dust curtain in fully mechanized excavating face.The results show that the larger the distance between the pressure tuyere and the head, the bigger the pressure suction ratio, the bigger the diameter of the pressure duct and the exhaust tube, the smaller the pressure air volume and the smaller the pressure air volume is, but the smaller the pressure / exhaust ratio is, the greater the wind speed of the dust curtain is.According to the results of numerical simulation, the relationship between the diffusion distance of high concentration dust above 50mg/m3 and various ventilation conditions is fitted. When the ratio of pressure and suction is 0.75, the effect of dust curtain is better, which is the best ventilation condition for the formation and action of dust curtain.It has been applied in engineering.The measured value is basically consistent with the numerical simulation value, and the high concentration dust is controlled in the uninhabited area of 5 m from head to head.
【作者单位】：山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地矿业与安全工程学院;
【基金】：国家自然科学基金煤炭联合基金重点项目(U1261205);国家自然科学基金项目(51474139);国家自然科学基金青年基金项目(51404147) 山东省科技发展计划项目(2013GSF12004)
【分类号】：TD714.4

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