综掘工作面粉尘运移特性分析及防治技术优化

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中图分类号：TD714 文献标志码：A 文章编号：1008-0562（2025）05-0520-08

Analysis of dust migration characteristics and optimization of prevention and control technology in excavation face

LIU Ziwen1，2，3

（1.China Coal Technology&Engineering Group Shenyang Research Institute，Fushun，China;2.State KeyLaboratory ofCoal Mine Disaster Prevention and Control，Fushun，China;3.KeyLaboratory ofNationalMine Safety Supervision Bureau ofCoalMineFire andGasPrevention and Control， Fushun ， China）

Abstract：Inorder to solve theproblemof dustpollution infullymechanized excavationface，theoretical analysis，numerical simulation and on-site monitoring methods were used to explore the characteristicsof dust stres，diffusion mechanismand itscoupling withairflow field，andan efficient dustcontrolscheme was sought through the optimization experiment of air volume ratio parameters.The results show that the dust control effect is the best when theratioofradialandaxialair distributionof the positive pressure air supplyductis optimized to 8：2 .Theaverage dust mass concentration at the head isreduced from 377.2mg/m3 to 30.2mg/m3 ，theoverall dust concentration of theroadway is greatly reduced，and the purification eficiencyof the dust removal fan is increased to 74.6% .The field application of this scheme can effectively inhibit the dust diffusion，and the dust concentration at the driver of the roadheader decreases by more than 91% .The research conclusions provide a reference forefficientdust preventionand control.

Keywords： excavation face; dust migration law; air volume ratio; dust control; numerical simulation

0引言

随着煤炭开采机械化程度的提高，局部生产区域粉尘浓度超标问题日趋严重。（剩余11186字）