综掘工作面粉尘分布规律及通风除尘优化研究

周全超; 杨胜强; 蒋孝元; 桑乃文

doi:10.13272/j.issn.1671-251x.2019050026

综掘工作面粉尘分布规律及通风除尘优化研究

doi: 10.13272/j.issn.1671-251x.2019050026

周全超^{1, 2, 3},
杨胜强^{1, 2, 3},
蒋孝元^{1, 2, 3},
桑乃文^{1, 2, 3}

1.
中国矿业大学安全工程学院，江苏徐州221116
2.
中国矿业大学煤矿瓦斯与火灾防治教育部重点实验室，江苏徐州221116
3.
中国矿业大学煤炭资源与安全开采国家重点实验室，江苏徐州221116

基金项目:

国家重点研发计划项目（2018YFC0807900）

双一流建设自主创新专项（2018ZZCX05）

详细信息

中图分类号: TD714.43
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出版历程
- 刊出日期: 2019-11-20

Research on dust distribution law and optimization of ventilation and dust reduction on fully mechanized heading face

ZHOU Quanchao^{1, 2, 3},
YANG Shengqiang^{1, 2, 3},
JIANG Xiaoyuan^{1, 2, 3},
SANG Naiwen^{1, 2, 3}

1.
School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
2.
Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Xuzhou 221116, China
3.
State Key Laboratory of Coal Resource and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China

摘要

摘要: 为了确定通风方式对综掘工作面粉尘分布的影响，并探究综掘工作面不同通风方式下的降尘效果，以隆德煤矿209综掘工作面为研究对象，利用FLUENT软件模拟压入式通风方式下巷道中粉尘分布情况以及抽、压组合式通风方式下粉尘分布规律及降尘效果，并通过现场实测验证数值模拟的准确性。分析结果表明：压入式通风方式下工作面巷道中粉尘污染严重，粉尘影响区域较大且沉降缓慢；模拟结果与现场实测粉尘浓度变化规律基本相同，验证了数值模拟结果的可靠性，进而说明了建立的数学模型及其参数设置的合理性；通过对比长压短抽式及短压长抽式通风方式的降尘效果得出，压风筒出风口距离工作面5 m的长压短抽式通风方法降尘效果最好，粉尘浓度可快速降低至6 mg/m3以下。
- 综掘工作面 /
- 粉尘分布规律 /
- 通风除尘 /
- 长压短抽式通风方式 /
- 短压长抽式通风方式
Abstract: In order to determine influence of ventilation mode on dust distribution on fully mechanized heading face and explore dust reduction effect under different ventilation modes, the 209 fully mechanized heading face of Longde Coal Mine was taken as research object, and the software of FLUENT was used to simulate distribution of dust in the roadway and dust distribution law and dust reduction effect under combined pumping and pressure ventilation mode. Accuracy of numerical simulation was verified through field measurement. The analysis results show that the dust pollution in the roadway under the forced-in ventilation mode is serious, the area affected by dust is large and settlement is slow; the simulation results are basically the same as the measured dust concentration in the field, which virifies reliability of the numerical simulation results, and furthermore, the rationality of the established mathematical model and its parameter settings is explained; by comparing dust reduction effect of ventilation mode of long-pressure short-pumping and short-pressure long-pumping, the conclusion is got that the ventilation mode of long-pressure short-pumping has the best dust reduction effect when air outlet of the pressure cylinder is 5 m away from the working surface, and the dust concentration can be quickly reduced to below 6 mg/m3.
- fully mechanized heading face /
- dust distribution law /
- ventilation and dust reduction /
- long-pressure short-pumping ventilation mode /
- short-pressure long-pumping ventilation mode