煤矿安全2024，Vol.55Issue(9)：94-99,6.DOI:10.13347/j.cnki.mkaq.20221800
掘进工作面多层螺旋喷雾降尘技术研究
Research on multi-layer spiral spray dust removal technology in heading face
摘要
Abstract
In order to solve the problem of respirable dust pollution in the heading face,a multi-layer spiral spray dust removal meth-od was proposed,in which supersonic pneumatic nozzles were arranged in a spiral shape.Taking the heading face of Qipan Coal Mine as the research object,the three-dimensional numerical model of multi-layer spiral spray dust removal technology device was established by using discrete element and finite element method and k-ω turbulence model and fluid flow particle tracking model in COMSOL software.The velocity field of multi-layer spiral spray air flow,velocity section and trajectory of water mist particles were obtained.The simulation results show that the airflow velocity at the cutting head of the TBM is faster,the farther away from the cut-ting head,the smaller the airflow velocity,and the airflow near the cutting head is very disorganized;after the nozzle is opened,the water mist particles will form a multi-layer spiral fog curtain,and the spiral fog curtain will cover the entire simulated driving sur-face after 20 s,and the particle size of the water mist particles is smaller than that of the traditional spray method.关键词
掘进工作面/粉尘污染/多层螺旋喷雾/风流分布/喷雾降尘/粉尘防治Key words
heading face/dust pollution/multi-layer spiral spray/air flow distribution/spray dust removal/dust prevention and control分类
矿业与冶金引用本文复制引用
娄杰,郭永红,阚琦笙,姜福川,张天..掘进工作面多层螺旋喷雾降尘技术研究[J].煤矿安全,2024,55(9):94-99,6.基金项目
国家自然基金面上资助项目(52474229) （52474229）
