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一定埋深的隧道结构位于可供地源热泵利用的恒温层中,以隧道围岩作为热源,将热交换管布置于隧道结构内吸收围岩中的地温能,可用于隧道自身及周围建筑的供热和制冷。内蒙古扎敦河隧道建成了利用地温能的隧道加热系统试验段,介绍了该系统的设计参数。并对前期研究成果进行完善和改进,获得了考虑隧道通风、地形条件和隧道进、出口处气象条件的围岩地温场解析解,并分析洞内风速和隧道长度对围岩地温能的影响,为隧道地温能利用提供指导。
The tunnel structure with a certain depth is located in a constant temperature layer that can be used by the ground source heat pump. The tunnel surrounding rock is used as a heat source. The heat exchange tubes are arranged in the tunnel structure to absorb the geothermal energy in the surrounding rock and can be used for the tunnel itself and surrounding buildings Heating and cooling. Inner Mongolia Zhaoduhe Tunnel has built a test section of tunnel heating system using geothermal energy, and introduced the design parameters of the system. The results of previous research are improved and improved. The analytical solution of the geothermal field of surrounding rock considering the tunnel ventilation, the topography and the meteorological conditions at the entrance and exit of the tunnel are obtained, and the influence of the wind speed and tunnel length on the geothermal energy of the surrounding rock is analyzed. Provide guidance for the use of tunnel geothermal energy.