摘要
采场排烟时间过长,严重影响了正常生产、延长了有毒有害气体的滞留时间。以长白山JT铁矿地下采场通风问题为背景,借助FLUENT流体力学软件,对爆破炮烟在采场空间的运动规律进行了研究。通过模拟矿山-100 m水平3号采场爆破通风状况,分析了采场在现有通风方案条件下的炮烟和通风风流运移规律。研究表明,新鲜风流进入采场后沿回采工作面附近流走,并未进入到采场深部,有毒有害气体在采场内大量聚集,造成通风风流的浪费,回采工作面CO浓度与采场深部CO浓度相差很大,该结论可以为矿山地下采场通风措施的改进提供新方案,同时也验证了流体力学软件FLUENT在解决采场通风问题上的可行性,这将为今后优化采场通风提供可靠的研究途径。
The smoke exhaust time in the mining area is too long,which seriously affects the normal production and prolongs the retention time of poisonous and harmful gases.Taking the ventilation problem of underground stope in Changbai Mountain JT Iron Mine as the background and with the help of FLUENT fluid dynamics software,this paper makes an effective exploration on the study of the motion law of blasting smoke in stope space.A simulation study of blasting ventilation in mine-100 m horizontal No.3 stope is carried out,and the migration law of smoke and ventilation flow in stope under the condition of existing ventilation scheme is analyzed.The results show that the fresh air flow flows along the mining face and does not enter the deep part of the stope.The toxic and harmful gases gather in the stope,resulting in the waste of ventilation and air flow.The CO concentration of mining face is very different from that of deep CO.By studying the flow field distribution and smoke migration law of stope,a new scheme can be provided for the improvement of ventilation measures in underground stope.At the same time,the feasibility of fluid mechanics software FLUENT solving stope ventilation problem is verified.This will provide a reliable research way for optimizing stope ventilation in the future.
作者
吴慧
张峰
张昭
黄刚
张建华
倪才华
WU Hui;ZHANG Feng;ZHANG Zhao;HUANG Gang;ZHANG Jian-hua;NI Cai-hua(China Society of Explosives and Blasting,Beijing 100070,China;School of Resource and Environment Engineering,Wuhan University of Technology,Wuhan 430070,China;North Blasting Technology Co.,Ltd.,Beijing 100089,China;Yangtze Ecology and Environment Co.,Ltd.,Wuhan 430062,China)
出处
《工程爆破》
CSCD
北大核心
2024年第4期51-57,共7页
Engineering Blasting
基金
国家重点研发计划(2018YFC0808404)
青年自然科学基金资助项目(51804235)。
关键词
地下矿山
爆破炮烟
数值模拟
通风优化
underground mine
blasting smoke
numerical simulation
ventilation optimization
