高溜井粉尘扩散特征试验研究  

Experimental Study on Dust Diffusion Characteristics of High Pass

作　　者：葛连梦 汪林红 陈宜华 陈颂 GE Lianmeng;WANG Linhong;CHEN Yihua;CHEN Song(School of Energy and Environment,Anhui University of Technology;Shandong China Mining Group Co.,Ltd.)

机构地区：[1]安徽工业大学能源与环境学院 [2]山东中矿集团有限公司

出　　处：《现代矿业》2021年第2期167-172,共6页Modern Mining

基　　金：超深井典型事故灾害安全监测及预控技术(编号:2016YFC0801605)。

摘　　要：为了研究高溜井放矿时粉尘分布及扩散特征,采用相似实验的方法,通过改变矿石质量、粒径、连续放矿次数和溜井放矿高度等条件,监测3个中段的粉尘浓度和风速变化。实验结果表明,粉尘浓度、风速最大值随着放矿质量、连续放矿次数及溜井放矿高度的提高而增大,随矿石粒径增大而减小。选用Fluent软件中DPM模型来模拟不同时刻模型整体的压力、风速变化情况。模拟结果表明,随着矿石颗粒从溜井顶端向下做加速运动,越靠近溜井底部压强越大;放矿时间越长,风速值波动越小,斜溜槽内风速值较大。实验研究结果与模拟计算结果具有很好的一致性。In order to study the dust distribution and diffusion characteristics of the high pass during ore drawing,similar experiments were used to monitor the dust concentration and wind speed changes in the three middle sections by changing the ore quality,particle size,continuous drawing times and ore draw⁃ing height.The experimental results show that the dust concentration and the maximum wind speed increase with the increase of the quality of ore drawing,the number of continuous drawing and the height of the pass drawing,and decrease with the increase of the ore size.The DPM model in the Fluent software is selected to simulate the overall pressure and wind speed changes of the model at different times.The simulation results show that as the ore particles accelerate downward from the top of the pass,the closer to the bottom of the pass,the greater the pressure.The longer the ore drawing time,the smaller the fluctuation of wind speed val⁃ue,and the larger the wind speed value in the inclined chute.The experimental results are in good agree⁃ment with the simulation results.

关 键 词：高溜井 相似实验 粉尘扩散 冲击风速 模拟仿真 

分 类 号：TD714[矿业工程—矿井通风与安全]