为了获得沿轴线冻结的斜井冻结温度场分布规律,采用一定几何缩比的物理模拟试验对斜井冻结温度场发展规律做了较全面系统的研究。通过在模型中布置热电偶,监测出直墙拱斜井拱部、侧墙、底板处的冻结温度场随冻结时间的变化规律,分析了不同关键界面的温度分布特征。结果表明:冻结壁主面和界面向内发展速度快于向外发展的速度,侧墙与底部交接的拐角处冻结壁发展速度要快于其他界面,拱顶与侧墙的交接面处冻结壁发展速度与侧墙的发展速度相近。

In order to have the freezing temperature field distribution law of the mine axial freezing inclined shaft, a certain geometrical scaling physical simulation experiment was applied to the full system study on the development law of the freezing temperature filed of the mine inclined shaft. The electric thermo-couples set in th e model were applied to monitor and measure the variation law with the freezing time of the freezing temperature fields at the arch roof, sidewall and floor of the vertical wall and arch inclined shaft. The temperature distribution features of the different key interface were analyzed. The inner development speed of the main interface measu red was faster than the external development speed.At the turning corner between the sidewall and floor, the development speed of the freezing wall was faster than th e other interface.At the connection face between the arch roof and the sidewall, the development speed of the freezing wall was closed to the development speed of the sidewall.

国家高技术研究发展计划(863计划)资助项目(2012AA06A401)；