基于Fluent的高海拔矿山掘进工作面增氧通风技术研究

发布时间：2018-04-15 03:31

本文选题：安全工程 + 矿山通风　；参考：《安全与环境学报》2017年01期

【摘要】：为解决高海拔矿山掘进施工中的缺氧问题,基于Fluent软件对掘进巷道的供氧通风进行数值模拟与方案设计。为得到合理的供氧量,分别计算了海拔4 650 m的大气压力和海拔3 000 m大气中氧分压,进而换算出供氧巷道需要达到的氧气体积分数,再结合通风量得到数值模拟所需的供氧量;建立不同的巷道通风模型,通过数值模拟试验得到最优供氧管路布置方案,并在此模型的基础上对供氧量进行优化,并对优化结果加以分析。结果表明:供氧管出口位置对提高氧气与空气混合的均匀程度有极大影响,出口位置应适当降低,且与风筒出口的水平距离不宜过大;掘进巷道在供氧速率为12.46m~3/min时能够达到预定的供氧标准,低于此速率便不能达标,供氧速率过高则造成资金浪费。
[Abstract]:In order to solve the problem of anoxia in the construction of high altitude mine excavation, the numerical simulation and scheme design of oxygen supply ventilation in tunneling roadway based on Fluent software are carried out.In order to obtain the reasonable oxygen supply, the atmospheric pressure of 4 650 m above sea level and the partial pressure of oxygen in the atmosphere of 3 000 m above sea level were calculated, and the oxygen volume fraction needed to be achieved in the oxygen supply roadway was converted.Combined with the ventilation, the oxygen supply is obtained by numerical simulation, and different ventilation models of roadway are established, and the optimal layout of oxygen supply pipeline is obtained by numerical simulation test, and on the basis of this model, the oxygen supply is optimized.The optimization results are analyzed.The results show that the outlet position of oxygen supply pipe has a great influence on the uniformity of oxygen and air mixing. The outlet position should be reduced properly and the horizontal distance from the outlet of the tuyere should not be too large.When the oxygen supply rate of tunneling roadway is 12.46m~3/min, it can reach the predetermined oxygen supply standard, but if it is lower than this rate, it can not reach the standard, and if the oxygen supply rate is too high, it will lead to the waste of funds.
【作者单位】：北京科技大学金属矿山高效开采与安全教育部重点实验室;
【基金】：国家“十二五”科技支撑计划项目(2012BAB01B04)
【分类号】：TD724

【相似文献】