摘要
掘进工作面的围岩散热是至今尚未解决的一个重要问题。笔者根据掘进工作面围岩温度场的特点 ,分析了移动柱坐标下的导热微分方程 ,合理地确定了温度场边界、划分了单元格 ;推导了该特定导热微分方程的变分方程 ,阐述了有限元解算的原理 ;论述了由温度场解算结果计算围岩散热量的方法。由此原理和方法 ,编制了计算机程序 ,以一个简单的实例 。
It is important and difficult to calculate the heat emitting from the wall rock at drifting face. According to the characteristic of temperature field around the drifting face, the differential equation of heat transfer under movable pillar coordinate is analyzed, the boundary of the temperature field is rationally set up, and the elements are plotted.The theory of finite element method to solve this heat transfer differential equation and the calculation method for the heat emitting from wall rock to air according to the result from solution of the temperature field are discussed.According to this principle and method, a program is compiled and exemplified with a simple example.
出处
《中国安全科学学报》
CAS
CSCD
2002年第6期33-36,共4页
China Safety Science Journal
基金
国家自然科学基金资助项目 (编号 :5 970 40 0 3 )
