衬砌水化热对隧道内热交换管换热量的影响

发布时间：2019-06-17 15:36

【摘要】：为解决寒区隧道冻害问题,将地源热泵型供热系统应用于内蒙古博牙高速扎敦河隧道中。将热交换管以串联纵向的布置形式埋设在初衬与二衬之间,隧道衬砌施工过程中的水化热影响围岩的温度场,从而影响热交换管的换热量。研究表明:隧道施工过程中,衬砌水化热对围岩温度场产生两次影响;保温层可以加剧水化热的影响,浅部围岩温度场受到的影响更显著;衬砌水化热提升热交换管的换热量,保温层铺设越早,热交换管换热量提升也越大,最大达到31.9%。系统运行初期,应充分利用衬砌水化热对热交换管换热产生的有利影响。
[Abstract]:In ord to solve that problem of the freezing damage of the tunnel in the cold area, the ground source heat pump type heat supply system is applied to the high-speed Zun River tunnel in the Inner Mongolia. The heat exchange tube is embedded between the primary lining and the second lining in a series longitudinal arrangement, and the hydration heat during the construction of the tunnel lining influences the temperature field of the surrounding rock, thereby affecting the heat exchange of the heat exchange tube. The research shows that during the construction of the tunnel, the hydration heat of the lining has two effects on the temperature field of the surrounding rock, the thermal insulation layer can increase the effect of the hydration heat, the influence of the temperature field on the surrounding rock of the shallow part is more obvious, the heat exchange of the heat exchange tube is promoted by the hydration heat of the lining, the earlier the laying of the heat-insulating layer is, The higher the heat exchange rate of the heat exchange tubes, the more the heat exchange tubes reach 31.9%. In the early stage of system operation, it is necessary to make full use of the effect of lining hydration heat on the heat exchange of the heat exchange tubes.
【作者单位】：呼伦贝尔市交通技术管理站;同济大学地下建筑与工程系;同济大学岩土及地下工程教育部重点实验室;
【基金】：交通运输部西部交通建设科技项目(2009318822047) 内蒙古自治区交通科技项目(NJ-2008-25)
【分类号】：U455

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