煤层注水防尘润湿半径的影响因素研究  

Study on influential factors of dust wetting radius of water injection in coal seams

作　　者：王军[1,2] 宋天奇[1,2] 孔国强[1,2] 齐文跃[1,2] 

机构地区：[1]中国矿业大学矿业工程学院,江苏省徐州市221116 [2]中国矿业大学煤炭资源与安全开采国家重点试验室,江苏省徐州市221116

出　　处：《中国煤炭》2016年第8期87-91,共5页China Coal

基　　金：国家自然科学基金资助项目(51404247)

摘　　要：针对综合机械化高产高效工作面粉尘浓度高的问题,煤层注水防尘可有效地降低粉尘浓度、改善工作环境。通过FLAC3D数值模拟软件建立煤层注水降尘模型,研究煤体润湿半径与注水时间、注水压力之间的关系,在此基础上为注水方案及参数的确定提供一定的参考。根据试验结果,设计了陈四楼煤矿21002工作面煤层注水方案,并进行了工业性试验。现场粉尘浓度监测结果表明,工作面的全尘浓度和呼尘浓度均下降超过40%,煤层注水防尘取得了良好的效果。Aiming at high dust concentration at comprehensive mechanized,high yield and high efficiency working faces,water injection in coal seams can decrease dust concentration and improve work environment effectively.This paper built up water injection model by FLAC3D numerical simulation software and analyzed the relation between wetting radius of coal blocks and injection time and pressure;provided certain reference for injection plan and parameter determination.According to experimental results,this paper designed injection plan of 21002 working face of a mine and undertook industrial testing.The in-situ dust concentration monitoring outcome indicated that both total dust concentration and breathing dust concentration decreased more than 40%,and water injection in coal seams achieved positive effects on dust cleaning.

关 键 词：煤层注水防尘 润湿半径 注水时间 注水压力 数值模拟 粉尘浓度 

分 类 号：TD741[矿业工程—矿井通风与安全]