摘要
为对周期性风流温度下的围岩温度场相似模拟的可行性进行研究,建立了周期性边界条件下的巷道围岩导热微分方程,引入无因次准数对导热微分方程进行了无因次化;然后根据方程分析法和量纲分析法,推导出周期性风温的巷道围岩温度场相似准则。并以某一矿井岩石巷道为例,设计了5组相似模拟实验方案,通过比较,选择几何相似比为20的相似模型。
In order to research the feasibility of the simulation test of surrounding rock temperature field under the periodic airflow temperature, the surrounding rock heat diffusion equation under the periodic airflow temperature was established. Introducing the non-dimension parameters and the heat diffusion equation was dimensionless. Then according to the equation and dimensional analysis method, deduces that the similarity criterions of surrounding rock temperature field under the periodic airflow temperature.Taking an example of mine rock roadway, five groups of similar simulation experiments were designed. Finally, by comparison, choose the similar model of the geometric similarity ratio is 20.
出处
《煤炭技术》
CAS
北大核心
2016年第3期180-182,共3页
Coal Technology
关键词
周期性风温
模拟试验
相似准则
可行性
periodic airflow temperature
simulation test
similarity criterions
feasibility
