Cold region tunnel anti-freezing heat preservation layer and heat preservation system based on same

Abstract

The invention discloses a cold region tunnel anti-freezing heat preservation layer. The cold region tunnel anti-freezing heat preservation layer comprises an active heat supply module and a passive heat preservation module, wherein the active heat supply module comprises heat exchange pipe loops, a ground source heat pump, heat supply pipe loops and a heat supply assembly; the first heat supply pipe loop is arranged between a primary lining and a secondary lining in an inverted-arch-shaped disc mode, and the second heat supply pipe loop is arranged on the outer surface layer of the primary lining in an inverted-arch-shaped disc mode; the heat exchange pipe loop is laid at the deep buried position, exchanges heat with underground rock and absorbs heat, and the first heat supply pipe loop is in communication with the first heat exchange pipe loop through a first ground source heat pump; the second heat supply pipe loop is communication with the second heat exchange pipe loop through a second ground source heat pump; the heat supply assembly is buried under the tunnel ground and located above the heat exchange pipe loop, absorbs heat of the heat exchange pipe loop and supplies heat to the tunnel ground; and the passive heat preservation module is an inverted-arch-shaped heat preservation layer arranged on the outer side of the second heat supply pipe loop. According to the cold region tunnel anti-freezing heat preservation layer, freezing injury of the tunnel in the cold region can be avoided, and operation and management of the tunnel are guaranteed.

Description

technical field [0001] The invention relates to the field of antifreeze and heat preservation for tunnels in cold regions. More specifically, the invention relates to an antifreeze insulation layer for tunnels in cold regions and an insulation system based on the insulation layer. Background technique [0002] With the development of my country's economic construction and the implementation of the western development policy, there are more and more tunnels in cold regions, and there are more and more frost damage problems in cold region tunnels. The cycle of freezing damage problems may cause the lining structure to be pushed out, or even The overall collapse of the tunnel may lead to large-scale peeling and cracking of the tunnel lining; it may cause the back of the lining to freeze and cause water leakage; it may also cause water leakage and ice hanging on the invert of the tunnel, and the freezing of the side wall to produce wall ice, frost heaving and ice accumulation at ...

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Problems solved by technology

[0002] With the development of my country's economic construction and the implementation of the western development policy, there are more and more tunnels in cold regions, and there are more and more frost damage problems in cold region tunnels. The cycle of freezing damage problems may cause the lining structure to be pushed out, or even The overall collapse of the tunnel may lead to large-scale peeling and cracking of the tunnel lining; it may cause the back of the lining to freeze and cause water leakage; it may also cause water leakage and ice hanging on the invert of the tunnel, and the freezing of the side wall to generate wall ice, frost heaving and ice accumulation at the bottom , which has brought great difficulties to the operation and management of tunnels in cold regions

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