Ground temperature anti-freezing heating system of energy tunnel lining burying type

Abstract

The invention discloses a ground temperature anti-freezing heating system of an energy tunnel lining burying type, and the system comprises a tunnel heat exchange segment and a tunnel heating segment. A heat exchange layer is disposed between a first tunnel lining and a second tunnel lining in a corresponding tunnel of the tunnel heat exchange segment. A first water inlet of the heat exchange layer is communicated with a water supply pipe. A first water outlet of the heat exchange layer is communication with a first water return pipe. The first water supply pipe and the first water return pipe are respectively connected with a front end of a heat pump, thereby forming a heat circulating pipe. Heat supply layers are respectively between the first tunnel lining and the second tunnel lining in a corresponding tunnel of the tunnel heating segment and between the road surface and a backfilling layer. The heat supply layers above and below the road surfaces are communicated, and second water inlets of the heat supply layers are communicated with a second water supply pipe. Second water outlets of the heat supply layers are communicated with a second water return pipe. The second water supply pipe and the second water return pipe are connected with the tail end of the heat pump, thereby forming a heat supply circulating pipe. The system is good in applicability, is higher in heat exchange efficiency, saves the cost, and shortens the construction cycle.

Description

technical field [0001] The invention relates to the field of tunnel surrounding rocks, in particular to an energy tunnel lining layer buried geothermal energy antifreeze heating system, which is suitable for extracting geothermal energy from surrounding rocks behind the tunnel lining and at the lower part of the inverted arch in areas where groundwater is not developed or underdeveloped The pavement and lining are heated. Background technique [0002] In recent years, with the rapid development of my country's transportation construction, the number of tunnels in cold areas is increasing day by day, but the problem of freezing damage in tunnels in cold areas has become increasingly prominent. Soon after some new tunnels were put into use, large-scale freezing damage occurred, which seriously affected the tunnel traffic safety. . An investigation of the operating tunnels in the cold region found that more than 80% of the tunnels in the cold region suffered from frost damage, ...

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Problems solved by technology

[0005] In order to overcome the fact that the existing geothermal water collection technology in the surrounding rock of the tunnel cannot be applied to areas with underdeveloped and undeveloped groundwater, and the geothermal energy in the surrounding rock at the lower part of the inverted arch cannot be extracted; although the technology of laying heat exchange pipes is not limited by the development of groundwater, However, the heat exchange tube is a linear heat source, its heat exchange capacity is limited, and the laying of the heat exchange pipeline will increase the construction cost of the project. Energy Tunnel Lining Layer Buried Geothermal Energy Antifreeze Heating System

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