大断面综掘巷道长压短抽条件下粉尘运移模拟

doi:10.16265/j.cnki.issn1003-3033.2017.02.023

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (2): 127-132.doi: 10.16265/j.cnki.issn1003-3033.2017.02.023

大断面综掘巷道长压短抽条件下粉尘运移模拟

肖峻峰副教授, 许峰, 樊世星, 卢平教授, 沈学, 陈忠伟

安徽建筑大学安全工程系,安徽合肥 230601

收稿日期:2016-11-04 修回日期:2016-12-31 出版日期:2017-02-28 发布日期:2020-11-22
通讯作者: 卢平(1966—),男,安徽庐江人,博士,教授,主要从事矿山安全理论与实践研究。E-mail: plu2003@163.com。
作者简介:肖峻峰 (1978—),男,湖北大冶人,博士,副教授,主要从事安全工程专业的教学与科研工作,主要研究方向为矿井瓦斯、火灾、粉尘等灾害防治。E-mail: xiaojia@ahjzu.edu.cn。
基金资助:
安徽省科技攻关计划项目(1301042104);安徽高校优秀青年人才支持计划重点项目(gxyqZD2016154);安徽省特色专业项目(2015tszy021);安徽省大学生创新创业训练计划项目(201510878155)。

Simulation of dust diffusion in fully mechanized excavation face having large cross-section under FPNA ventilation condition

XIAO Junfeng, XU Feng, FAN Shixing, LU Ping, SHEN Xue, CHEN Zhongwei

Department of Safety Engineering, Anhui Jianzhu University, Hefei Anhui 230601, China

Received:2016-11-04 Revised:2016-12-31 Online:2017-02-28 Published:2020-11-22

摘要/Abstract

摘要： 为改善大断面掘进巷道内通风除尘效果,针对龙王沟煤矿副斜井净断面积24.9 m²、供风量1 500 m³/min的情况,采用计算流体软件Fluent,建立长压短抽混合式通风条件下稳态离散相模型(DPM),研究压、抽风筒口相对位置和压抽风量配比对粉尘-风流耦合运移的影响。结果表明,当压入式风筒口到工作面距离为27.5 m,抽出式风筒口到工作面距离为5.0 m,压抽比为1.2时,龙王沟煤矿副斜井大断面综掘巷道内风流稳定,综合除尘效果最佳,模拟结果与现场实测结果基本一致。

关键词: 大断面掘进巷道, 粉尘, 长压短抽, 数值模拟, 相对间距, 压抽比

Abstract: In order to improve the effect of dust removal by ventilation in fully mechanized excavation face of large cross-section, a steady discrete phase model (DPM) was built in Fluent software for a vice inclined shaft, having an effective sectional area of 24.9 m² and an air rate of 1 500 m³/min,of Longwanggou Mine under far-pressing-near-absorption ventilation. It was used to research the effects of both the forced and exhaust ventilation opening positions and the pressure extraction ratio on the diffusion. The results show when the distance from the forced-ventilation opening to mechanized excavation face and the distance from the exhaust-ventilation opening to mechanized excavation face are respectively 27.5 m and 5.0 m, and the ratio of pressure air volume to extraction air volume is 1.2, the effect of dust extraction by combined ventilation is optimal. And moreover, results from the numerical simulation conform with the measured results on the spot.

Key words: excavation roadway of large cross-section, dust, far-pressing-near-absorption(FPNA), numerical simulation, relative spacing, pressure-extraction ration

中图分类号:

X964
TD714

肖峻峰, 许峰, 樊世星, 卢平, 沈学, 陈忠伟. 大断面综掘巷道长压短抽条件下粉尘运移模拟[J]. 中国安全科学学报, 2017, 27(2): 127-132.

XIAO Junfeng, XU Feng, FAN Shixing, LU Ping, SHEN Xue, CHEN Zhongwei. Simulation of dust diffusion in fully mechanized excavation face having large cross-section under FPNA ventilation condition[J]. China Safety Science Journal, 2017, 27(2): 127-132.

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大断面综掘巷道长压短抽条件下粉尘运移模拟

Simulation of dust diffusion in fully mechanized excavation face having large cross-section under FPNA ventilation condition

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