地铁区间隧道热环境与土体蓄放热特性的监测研究
Monitoring of thermal environment and soil heat storage and release characteristics of underground railway interval tunnels
摘要：
通过对上海某地铁区间热环境空气温度、壁面温度、热流密度等参数约14个月的监测数据分析，得到了地铁区间空气温度随时间和位置的变化特性及区间土体蓄放热特性。区间隧道空气温度与室外空气温度的最大温差冬季为13 ℃，夏季为4 ℃；区间隧道土体冬季以放热为主，典型日热流密度范围为-2~23 W/m2；不同季节区间土体蓄放热是区间空气温度维持相对稳定的关键。
Abstract：
Based on the analysis of monitoring data for about 14 months of thermal ambient air temperature, wall temperature, heat flux density and other parameters of a underground railway interval in Shanghai, obtains the characteristics of the air temperature change with time and location in the underground railway interval and the heat storage and release characteristics of the interval soil. The maximum temperature difference between interval tunnel air and outdoor air is 13 ℃ in winter and 4 ℃ in summer. The soil of interval tunnel is mainly exothermic in winter, and the typical daily heat flux density ranges from -2 to 23 W/m2. The heat storage and release of the interval soil is the key to maintaining the relative stability of air temperature in the interval.
Keywords heat flux density, air temperature, interval soil, heat storage and release, underground railway
Keywords:heat flux density, air temperature, interval soil, heat storage and release, underground railway