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Novel cold-proof and anti-freezing system and method for high-ground-temperature tunnel in cold region

A high ground temperature, tunnel technology, applied in heating systems, heat recovery systems, hot water central heating systems, etc., to ensure the safety of trains and reduce energy consumption

Active Publication Date: 2021-09-03
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a new type of anti-freezing system and method for high-temperature tunnels in cold regions, which utilizes the High-temperature heat energy prevents frost damage in tunnels, and solves the problem of antifreeze in lining and thermal insulation ditches

Method used

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  • Novel cold-proof and anti-freezing system and method for high-ground-temperature tunnel in cold region
  • Novel cold-proof and anti-freezing system and method for high-ground-temperature tunnel in cold region
  • Novel cold-proof and anti-freezing system and method for high-ground-temperature tunnel in cold region

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Embodiment 1

[0052] Such as figure 1 , figure 2 As shown, the present invention is a novel anti-cold and antifreeze system for tunnels with high ground temperature in cold regions. The system includes a heat extraction system 2, a control transmission system 3 and a heating system 4. The transmission system 3 is connected to the heating system 4;

[0053] The heat extraction system 2 includes a heat extraction tunnel 5 and an air source heat pump unit 7 installed in the heat extraction tunnel 5. The air source heat pump unit 7 may include multiple sets of air source heat pumps; the heat extraction tunnel 5 is located in the main tunnel 1 Excavation and construction of the part with high surrounding rock temperature, and contact with the air through the heat exchange tube to absorb the heat of the air; where:

[0054] The heat extraction tunnel 5 is excavated and constructed in the part of the main tunnel 1 where the surrounding rock temperature is relatively high, and the ambient temper...

Embodiment 2

[0077] Such as figure 1 , figure 2 As shown, the difference between this embodiment and Embodiment 1 is that this embodiment provides a new type of anti-cold and anti-freezing method for a high-temperature tunnel in a cold region, which is applied to a new type of high-temperature tunnel in a cold region described in Embodiment 1. Cold and frost protection system; the method includes:

[0078] Heating control stage: the hot water produced by the heat pump unit 7 is stored in the thermal insulation water tank 9 installed in the control room 6. When heating is required in cold weather, the hot water medium is transported from the water supply pipeline 10 to the main tunnel 1 opening. The heating system 4 heats the lining heat supply pipe 12 and the drainage ditch heat supply pipe 13 to realize the heating and heat preservation of the lining and drainage ditch;

[0079] Cold water return stage: the cold water that has released heat in the lining heat supply pipe 12 and the dra...

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Abstract

The invention discloses a novel cold-proof and anti-freezing system and method for a high-ground-temperature tunnel in a cold region. The novel cold-proof and anti-freezing system comprises a heat taking system, a control and transmission system and a heating system. The heat taking system comprises a heat taking tunnel and an air source heat pump unit mounted in the heat taking tunnel, and the heat taking tunnel is excavated and built at the high-temperature part of the surrounding rock of the main tunnel and is in contact with air through a heat exchange pipe to absorb heat of the air. The heating system is arranged between a secondary lining and a heat preservation layer at the position of a portal of the main tunnel and in a drainage ditch. The heating system comprises a lining heat supply pipe and a drainage ditch heat supply pipe. The heat taking system takes heat by means of an air source, and heat is transmitted to the lining heat supply pipe and the drainage ditch heat supply pipe of the heating system through the control and transmission system, so that heat supply and heat preservation of the lining and the drainage ditch are achieved. According to the novel cold-proof and anti-freezing system and method for the high-ground-temperature tunnel in the cold region, high ground temperature is combined with freezing resisting, and novel cold-proof and anti-freezing system and method have great practical application value for the high-ground-temperature tunnel in the high-altitude cold region; and the active heat supply method can effectively solve the freezing damage problem of the tunnel.

Description

technical field [0001] The invention relates to the technical field of tunnel operating environment safety, in particular to a new anti-cold and frost-resistant system and method for tunnels with high ground temperature in cold regions. Background technique [0002] In recent years, with the rapid development of my country's economy and society, tunnel construction is also booming. With the development of the western region and the construction of the Sichuan-Tibet Railway, many ultra-long tunnels with high buried depths have appeared in high-altitude and cold areas. These areas have complex geology and harsh climates, and frost damage is one of the most significant problems in tunnel construction. [0003] According to research reports on tunnels at home and abroad, tunnel frost damage is mainly manifested as lining ice hanging, icicles hanging on the roof, and water ditch freezing, etc., which affect driving safety; Roof cracking poses a potential threat to the long-term ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D3/18F24D19/10
CPCF24D3/18F24D19/1039Y02B30/52Y02E10/10
Inventor 曾艳华周小涵任小川陶亮亮李杰严晓楠
Owner SOUTHWEST JIAOTONG UNIV
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