高温矿井综采工作面通风条件温度场的数值模拟  

Numerical simulation of temperature field of ventilation condition in fully mechanized mining face of high temperature mine

作　　者：韩利军 Han Lijun(Xishan Coal and Electricity Mining Management Co.,Ltd.,Taiyuan 030053,China)

机构地区：[1]西山煤电矿业管理有限公司,山西太原030053

出　　处：《煤炭与化工》2025年第3期123-127,共5页Coal and Chemical Industry

摘　　要：随着开采深度的增加,矿井热灾害已成为制约矿业高速发展的重大难题,严重危害着从业人员的身心健康。基于上述问题,本文针对高温独头巷道作业环境差、通风效果不良的问题,以平煤十矿为工程背景,通过建立巷道通风降温几何模型,设计正交试验,使用数值模拟软件构建非稳态模型探究不同进风口直径、进风温度、进风速度和掘进面深度对巷道温度场及监测点处温度的影响。不同通风时间下,流体域的平均温度与监测点温度间并无明显关系,通过温度场分析,高进风温度、小进风口直径会造成低温区域距离掘进面较远的情况,降温效果差。极差分析得出流体域的平均温度与监测点温度的最佳组合相同,进风口直径对二者的影响最大,进风速度影响最小。增大进风口直径可以达到快速降温的目的,而降低进风温度可率先使巷道内整体温度下降。With the increasing of mining depth,mine thermal disaster has become a major problem restricting the rapid development of mining industry,which seriously endangers the physical and mental health of employees.Based on the above problems,aiming at the problems of poor working environment and poor ventilation effect in high-temperature single-head roadway,taking Pingdingshan No.10 Coal Mine as the engineering background,through the establishment of roadway ventilation and cooling geometric model,orthogonal test was designed,and numerical simulation software was used to construct non-steady-state model to explore the influence of different air inlet diameter,air inlet temperature,air inlet speed and excavation face depth on roadway temperature field and temperature at monitoring points.Under different ventilation time,there is no obvious relationship between the average temperature of the fluid domain and the temperature of the monitoring point.Through the analysis of the temperature field,the high inlet temperature and the small inlet diameter will cause the low temperature area to be far away from the tunneling surface,and the cooling effect is poor.The range analysis shows that the optimal combination of the average temperature of the fluid domain and the temperature of the monitoring point is the same.The inlet diameter has the greatest influence on the two,and the inlet velocity has the least influence.Increasing the diameter of the air inlet can achieve the purpose of rapid cooling,and reducing the air inlet temperature can first reduce the overall temperature in the roadway.

关 键 词：矿井热灾害 高温独头巷道 数值模拟 非稳态模型 极差分析 

分 类 号：TD724[矿业工程—矿井通风与安全]