井下巷道喷浆过程产尘的运移及分布特性  

Transportation and distribution characteristics of dust produced by slurryspraying process in underground roadway

作　　者：宋小林[1] 李世航[1] SONG Xiaolin;LI Shihang(China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学,江苏徐州221116

出　　处：《煤炭科技》2024年第3期19-24,30,共7页Coal Science & Technology Magazine

基　　金：国家自然科学基金面上项目(52174215)。

摘　　要：煤矿井下全气动喷浆技术的喷射过程涉及浆体基料、喷雾作用与周围空气等,是典型的气、液、固三相流。基于CFD-DPM方法,采用欧拉双流体模型模拟气相和水相,采用拉格朗日模型追踪喷浆过程产生的粉尘,研究了多种工况喷雾作用下粉尘的扩散过程,分析了粉尘运移及分布特性,获得了喷雾角度与流量对粉尘分布的影响规律。喷射角度的变化对粉尘扩散的影响主要集中在中下部区域,控制喷雾流量可有效降低区域粉尘,为合理降尘、提高喷射效率提供了理论支持。The spraying process of the fully pneumatic slurry technology in underground coal mines involves slurry base material,spray effect and surrounding air,etc.It is a typical three-phase flow of gas,liquid and solid.Based on the CFD-DPM method and using the Euler two-fluid model,the simulation involves the gas phase and water phase,while employing the Lagrangian model to track dust generated in the spraying process.The dust diffusion process under the action of spray under various working conditions was studied,and the dust transportation and distribution characteristics were analyzed.The influence of spray angle and flow rate on the dust distribution was obtained.The influence of the change of spraying angle on the dust diffusion was mainly concentrated in the middle and lower regions.Controlling the spray flow can effectively reduce the regional dust,providing theoretical support for reasonable dust reduction and improving the spraying efficiency.

关 键 词：喷射过程 粉尘扩散 气固液三相流 CFD-DPM方法 

分 类 号：TD714[矿业工程—矿井通风与安全]