综掘面径向分风与压风配比对风幕阻尘的影响

发布时间：2019-03-13 08:37

【摘要】：为明确附壁风筒径向分风与巷道压风配比对风幕阻尘的影响,建立了三交河煤矿2-5082综掘面等比例物理模型,并运用FLUENT软件对压风量Q为350~600m~3/min、附壁风筒径向分风量与压风量配比B为50%~90%条件下的风流运移及粉尘扩散情况进行数值模拟分析.结果表明,综掘面Q的降低以及B的增加有利于在迎头范围内形成阻尘风幕,迎头风流场阻尘能力亦随之增强.对于2-508_2综掘面及与其生产条件相似的综掘面而言,当Q为350~400m~3/min,B为80%~90%及Q为450m~3/min,B为90%时能够在综掘司机前部断面空间形成有效阻尘风幕,其中,Q为350m~3/min、B为90%时风幕阻尘效果最佳.将数值模拟结果在2-5082综掘面进行工程应用,实测结果表明数值模拟结论较为准确,附壁风筒形成的阻尘风幕能够将50mg/m~3以上的高浓度粉尘阻控在距迎头10m以内的巷道空间内,有效改善了综掘区域作业环境.
[Abstract]:In order to clarify the effect of the ratio of radial air distribution of wall-attached wind tube and tunnel pressure air ratio on wind curtain dustproof, an equal proportion physical model of 2 脳 5082 fully mechanized excavation face in Sanjiahe Coal Mine was established, and the FLUENT software was used to calculate the pressure air volume Q of 350 ~ 600 m ~ (3) ~ (3) 路min ~ (- 1). Numerical simulation of air flow migration and dust diffusion was carried out under the condition that the ratio of radial air volume to pressure air volume B was 50% ~ 90%. The results show that the decrease of Q and the increase of B are beneficial to the formation of dust-resistant wind curtain in the head-on area, and the dust-blocking ability of the head-on wind field is also enhanced. When Q = 350 / 400 m / min, B = 80% and Q = 450 m / min, B = 90%, and B = 90%, an effective dust screen can be formed in the front cross-section space of the driver, and an effective dust screen can be formed in the front cross-section space of the driver when Q = 350 / 400 m / min, B = 450 m / min and B = 90% / 2 / 2, and the production conditions are similar to their production conditions. When Q is 350 m ~ 3 min and B is 90%, the effect of wind screen dust suppression is the best. The numerical simulation results have been applied to the engineering application of the 2x5082 fully mechanized excavation face. The measured results show that the numerical simulation results are more accurate. The dust-proof curtain formed by the wall-attached wind tube can control the high-concentration dust above 50mg/m~3 in the roadway space less than 10 m away from the headhead, thus effectively improving the working environment of the fully mechanized excavation area.
【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) 国家自然科学基金青年基金项目(51404147) 山东科技大学研究生科技创新项目(SDKDYC170101)
【分类号】：TD714.4

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