基于数值模拟的综采工作面通风除尘风速优化

摘要

In order to solve the high dust mass concentration problem of the fully-mechanized coal mining face in coal mine,taking No. 2225 fully-mechanized coal mining face of Xingdong Mine as a study object,based on the mathematics model,a fully-mechanized coal mining face was established.The FLUENT software was applied to the numerical simulation to analyze the air velocity affected to the dust migration law of the fully-mechanized coal mining face.The study results showed that in a certain air velocity scope,with the air velocity increased,the average dust mass concentration of the fully-mechanized coal mining face would steadily reduced. But the air velocity too high would also cause a negative influence to the working environment and condition.Therefore,an air velocity of 2 m/s at the air inlet was determined as the optimized air velocity and under the condition of working environment not influenced,the dust mass concentration would be minimum.%为解决煤矿综采工作面粉尘质量浓度较高的问题，以邢东矿2225综采工作面为研究对象，在建立综采工作面数学模型的基础上，利用FLUENT软件进行数值模拟，以分析风速对综采工作面粉尘运移规律的影响。研究结果表明：在一定风速范围内，随着风速的增大，综采工作面的平均粉尘质量浓度会逐渐减小，但是风速过大也会对工作的环境和条件造成负面影响，因此应确定进风口风速2 m/s为最优风速，在不影响工作环境的条件下使粉尘质量浓度达到最小。