巷道测风站风速传感器平均风速测定位置优化研究

Optimized study on location to measure average air velocity with air velocity sensor in wind measuring station of underground mine

为了得到井下巷道测风站内风速传感器测定巷道平均风速的最佳布置位置,以郑煤集团白坪煤矿井下-175 m水平并联进风石门测风站为研究对象,根据巷道测风站实测通风参数建立测风站巷道风速场CFD计算模型,经现场实测结果与模拟结果对比,验证了巷道测风站风速场CFD模型模拟计算的可靠性。利用巷道测风站风速场CFD模型,对测风站内人员处于极端位置条件下巷道测风站风速场进行定量模拟分析,研究结果表明:巷道测风站的中垂线距巷道底板距离区间3.63~3.64 m为风速传感器最佳布置区域,将风速传感器布置该区域内,可保证测风站附近区域存在人员时测风站内风速传感器的测风精准度,可为巷道精准化测风工作提供指导。

In order to have an optimal layout location to measure an average air velocity in a mine roadway with the wind air velocity sensor in the wind measuring station of an underground mine,based on the wind measuring station in a-175 m level and an air income crosscut of Baiping Underground Mine,Zhengzhou Coal Group as the study object,according to the measured ventilation parameters of the wind measuring station in the mine roadway,a CFD calculation model of the mine roadway air velocity field was established in the wind measuring station. In comparison with the site measured results and the simulation results,the reliability of the simulation calculation by the CFD model of the mine roadway air velocity field in the wind measuring station was verified. The CFD model of the mine roadway air velocity field in the wind measuring station was applied to the quantitative simulation analysis on the mine roadway wind measuring station with the personnel of the station under the condition of the extreme location. The study results showed that the optimum layout area of the air velocity sensor would be a zone distance of 3.63 m,3.64 m from the mine roadway floor distance to the central vertical line of the mine roadway in the wind measuring station. The air velocity sensor set up within the area could ensure the personnel in the area near the wind measuring station have the wind measuring accuracy of the air velocity sensor in the wind measuring station and they would provide the science guidance and proposals on the accurate wind measuring work in the mine roadway.