摘要
在研究煤火控制体模型、火区烟气流动模型和传热模型基础上,分析了火区煤燃烧放热、散热的动态平衡过程;结合煤燃烧理论初次在理论上提出了地下煤火燃烧系统热动力演化过程的关键参数之一:火源温度的定量计算方法;结合火区与外部环境的热量传递过程,提出了火区煤燃烧累积放热量、火区累积散热量的计算方法,理论上为定量揭示地下煤火燃烧系统热动力演化过程提供了参数依据;并可为地下煤火火源精确定位研究及实际火区治理工程设计提供一定依据.
Based on the study of coal fire control volume model, air/smoke flow model, and the heat-transfer model, the dynamic balance process of the heat producing and releasing from coal combustion in fire zone is analyzed. According to coal combustion theory, we firstly propose one of the key parameters to describe the thermal dynamic evolution of underground coal fire in theoreticaly, and the quantitative calculation method of fire source temperature. Additionally, we also put forward the methods to calculate both the accumulated producing heat by coal combustion and the accumulated releasing heat in fire zone, by considering the heat transfer process between the fire zone and external enviroment. The calculation model provides a quantitative basis to reveal the thermal dynamic process of coal fire conbustion system, as well as some potential help for the precise location of underground coal fire source and engineering design of coal fire extinguishing.
出处
《采矿与安全工程学报》
EI
北大核心
2011年第4期628-632,共5页
Journal of Mining & Safety Engineering
基金
新疆自然科学基金项目(2011211A106)
绿洲生态重点实验室开放基金项目(XJDX0201-2009-03)
国家自然科学基金项目(50927403)
关键词
地下煤火
火源温度
热动力演化过程
计算方法
underground coal fire
fire source temperature
thermal dynamics evolution
calculation method
