摘要
为了提高瓦斯的抽采效率,以林南仓5877Y工作面为研究对象,建立了采空区埋管瓦斯抽放数值模型,在保证其它参数不变的前提下,采用COMSOL模拟软件研究不同抽采负压对采空区温度场、氧浓度场和流场的影响规律。研究结果表明:随着抽采负压的增大,采空区的高温区域逐渐向回风巷一侧扩散;漏风风流由抽采前聚集在回风巷附近转移到埋管口一端;进风侧的自燃带宽度随着负压的增大逐渐增大,而回风侧呈先增大后减小的趋势。最后将模拟结果与现场数据进行对比分析,验证了模拟的准确性。
In order to improve the efficiency of gas drainage,a numerical model for gas drainage with buried pipe in goaf was established,taking the 5877 Y face of Linnancang as the research object.With other parameters unchanged,COMSOL software is used to simulate the influence of different negative pressure on temperature field,oxygen concentration field and flow field in goaf.The results show that with the increase of negative pressure,the high temperature area of the goaf gradually diffuses to the side of the return air lane.The wind leakage flow is transferred from the area near the return air lane to the end of the buried pipe,and the leakage velocity increases.The width of the spontaneous combustion belt gradually increases on the air inlet side,and the air return side increases firstly and then decreases.The accuracy of the simulation is verified by the field data.
作者
王月红
吴怡
张九零
WANG Yue-hong;WU Yi;ZHANG Jiu-ling(Mining Engineering College and North China University of Science and Technology,Tangshan 063009,China;Key Laboratory of Mining Exploitation and Safety Technology in Hebei Province,Tangshan 063009,China)
出处
《煤炭工程》
北大核心
2020年第1期106-110,共5页
Coal Engineering
基金
国家自然科学基金项目(51504077,51404086)
河北省自然科学基金资助项目(E2016209056)
河北省科技计划项目(15274112)
华北理工大学杰出青年基金(jp201509).
关键词
采空区
抽采负压
自燃
氧浓度场
温度场
流场
goaf
negative pressure extraction
spontaneous combustion
oxygen concentration field
temperature field
flow field
作者简介
王月红(1980—),女,河北唐县人,博士,副教授,现主要从事于煤化学、煤岩学以及矿山安全等方面工作,E-mail:wyuehong1201@163.com。
