| 焦婉莹.综掘面抽出风筒吸风口直径对风流场影响分析:以煤矿矿井为例[J].矿产勘查,2020,11(1):215-219 |
| 综掘面抽出风筒吸风口直径对风流场影响分析:以煤矿矿井为例 |
| Suction air inlet diameter influence on the wind flow field in comprehensive excavation face:Take coal mine as an example |
| 投稿时间：2018-09-13 |
| DOI： |
| 中文关键词: 煤矿 瓦斯 粉尘 综掘面 吸风口直径 Fluent 风流场 涡流 矿产开采工程 |
| 英文关键词: coalmine, gas, dust, fully mechanized heading face, suction diameter, Fluent, wind flow field, mineral mining engineering |
| 基金项目: |
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| 摘要点击次数: 1292 |
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| 中文摘要: |
| 矿井综掘工作面良好的通风环境是保障煤矿安全生产的前提。文章以某煤矿综掘巷道为研究对象,采用Fluent软件模拟长压短抽通风系统中抽出风筒吸风口直径变化对风流场的影响。由模拟结果可知:吸风口直径的大小直接影响巷道内风流分布,吸风口直径的改变会对压入射流形成干扰,对距掘进端头0～10 m范围内的风速影响最大；同时对巷道内涡流有明显的影响,吸风口直径从0.5 m增加到0.6 m时,涡流区域减小,直径从0.6 m增加到1.0 m时,涡流区域逐渐扩大,吸风口直径0.6 m时能实现最佳通风效果。 |
| 英文摘要: |
| The comprehensive excavation face is the most seriously polluted place in the underground of coal mine. Using Fluent software to simulate the influence of the diameter change of the suction air inlet of the extraction duct on the airflow field in the long pressure short draft ventilation system, the roadway in the comprehensive excavation was taken as the research object. From the simulation results, it can be seen that the diameter of the air intake directly affects the air flow distribution in the roadway, the change of the diameter of the suction nozzle will interfere with the inrush jet, It has the greatest influence on the wind speed within the range of 0-10m from the excavation end; At the same time, it has obvious influence on the vortex in the roadway. When the diameter of the suction air outlet increases from 0.5m to 0.6m, the vortex area decreases, and when the diameter increases from 0.6m to 1.0m, the vortex area gradually expands,The ventilation effect is best when the diameter of air suction port is 0.6m. |
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