附壁风筒径向流量比及抽尘距离对综掘工作面隔尘风幕的影响

doi:10.16085/j.issn.1000-6613.2017-0695

化工进展 ›› 2017, Vol. 36 ›› Issue (10): 3610-3618.DOI: 10.16085/j.issn.1000-6613.2017-0695

附壁风筒径向流量比及抽尘距离对综掘工作面隔尘风幕的影响

王昊^1,2, 程卫民^1,2, 孙彪^1,2, 于海明^1,2

1. 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, 山东青岛 266590;
2. 山东科技大学矿业与安全工程学院, 山东青岛 266590

收稿日期:2017-04-19 修回日期:2017-06-13 出版日期:2017-10-05 发布日期:2017-10-05
通讯作者: 程卫民,教授,博士生导师,从事矿井灾害预测与防治方向的研究.
作者简介:王昊(1990-),男,博士研究生,从事矿井粉尘灾害防治方面研究.E-mail:wanghao1990_andy@163.com.
基金资助:
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（51404147）、中国博士后科学基金第57批面上一等项目（2015M570601）及研究生科技创新项目（SDKDYC170101）。

The effects of wind-splitting of a wall-attached air duct and dust exhaust distance on dust barrier air curtain in a fully mechanized working face

WANG Hao^1,2, CHENG Weimin^1,2, SUN Biao^1,2, YU Haiming^1,2

1. State Key Laboratory of Mining Disaster Prevention and Control Co-found by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, Shandong, China;
2. College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China

Received:2017-04-19 Revised:2017-06-13 Online:2017-10-05 Published:2017-10-05

摘要/Abstract

摘要： 为明确附壁风筒径向流量所占压风总量的比例及抽风筒的抽尘距离对综掘区域隔尘风幕形成及隔尘效果的影响，以蒋庄煤矿3_下610综掘工作面为研究对象，运用Ansys CFD软件对附壁风筒径向流量比例为50%～90%、抽尘距离为2～5m条件下的风流运移及粉尘逸散情况进行数值模拟分析。结果显示，径向流量比例的增加、抽尘距离的降低，有利于在综掘区域形成有效隔尘风幕。针对3_下610综掘工作面及与其生产条件相似的其他煤矿综掘工作面，当径向流量比例为80%、抽尘距离为2m以及径向流量比例为90%、抽尘距离为2～3m时，能够形成有效隔尘风幕并将高浓度粉尘阻隔于距迎头7.5m以内的空间范围内。现场实测数据表明，风流运移模拟结果与风流实测结果基本一致、风流流速平均相对误差低于13%，模拟结果较为准确。最优风幕参数条件下，距迎头7m实测断面处，平均总尘浓度降至18.6mg/m³，平均呼尘浓度降至8.1mg/m³，隔尘效果较为明显。

关键词: 附壁风筒, 径向流量比例, 抽尘距离, 风幕隔尘, 数值模拟

Abstract: To clarify the effects of wind-splitting ratio of a wall-attached air duct and dust exhaust distance on the air curtain formation and dust barrier effectiveness in the fully mechanized working area,3_down610 fully mechanized working face in Jiangzhuang coal mine was developed. The airflow migration and dust diffusion for various wind-splitting ratios (50%-90%) and dust exhaust distances (2-5m)were numerically simulated by Ansys CFD. The results showed that the increase of wind-splitting ratio and decrease of dust exhaust distance are both conducive to the formation of effective dust barrier air curtain. For 3_down610 fully mechanized working face and those working faces with similar production conditions,an effective dust barrier air curtain can be formed under the parameters of both the wind-splitting ratio-80% with dust exhaust distance-2m and wind-splitting ratio-90% with dust exhaust distance-2-3m. For these parameters,the high concentration dust can be blocked within the area 7.5m from the working face. The measured results indicate that simulation results generally agree with each other in terms of air flow direction,the average relative error of air flow velocity is less than 13%. By applying the optimal parameters,the average total dust concentration and average respiratory dust concentration in measured section 7m away from the working face are decreased to 18.6mg/m³ and 8.1mg/m³,respectively. It demonstrates that the dust barrier effect is significant.

Key words: wall-attached air duct, wind-splitting ratio, dust exhaust distance, air curtain dust barrier, numerical simulation

中图分类号:

TD714.4

王昊, 程卫民, 孙彪, 于海明. 附壁风筒径向流量比及抽尘距离对综掘工作面隔尘风幕的影响[J]. 化工进展, 2017, 36(10): 3610-3618.

WANG Hao, CHENG Weimin, SUN Biao, YU Haiming. The effects of wind-splitting of a wall-attached air duct and dust exhaust distance on dust barrier air curtain in a fully mechanized working face[J]. Chemical Industry and Engineering Progress, 2017, 36(10): 3610-3618.

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附壁风筒径向流量比及抽尘距离对综掘工作面隔尘风幕的影响

The effects of wind-splitting of a wall-attached air duct and dust exhaust distance on dust barrier air curtain in a fully mechanized working face

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