Numerical simulation of the dust movement rule in fully-mechanized coal faces
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摘要: 運用氣固兩相流動理論,建立粉塵運動的數學模型.根據綜采工作面的具體特點和實測數據,采用計算流體力學的FLUENT軟件,對工作面的粉塵運動規律進行數值模擬.模擬結果顯示,粉塵產生后多數隨風流在煤壁一側運動,少數粉塵隨機擴散.綜采工作面的除塵重點應該放在采煤機下風向10m以內的煤壁一側;預濕煤壁對降低工作面粉塵濃度也有很大作用.Abstract: A mathematical model of dust movement was derived from the gas-solid two-phase flow theory. According to characteristics of the fully-mechanized coal face in mines and related survey data, numerical simulation of the dust movement rule was made with CFD software FLUENT. The result shows that most of dust moves with wind, and little of dust disperses at random. Dust control in the work face should focus on the place within 10 m under the coal mining machine near the coal wall, and wetting the coal face before coal cutting is also important for dedusting.
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Key words:
- fully-mechanized coal face /
- dust /
- movement rule /
- gas-solid two-phase flow /
- numerical simulation
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