A kind of cold area tunnel electric heat tracing active thermal insulation and antifreeze facility and its construction method

Abstract

The invention discloses a construction method of a cold region tunnel electric heat tracing active insulation antifreezing facility, which comprises the steps of: firstly, arranging a heating cable in a secondary lining surface of a tunnel; secondly, connecting the heating cable with a temperature controller, arranging a temperature control probe connected to the temperature controller beside theheating cable; thirdly, arranging an insulation board on the heating cable; and fourthly, arranging a fireproof board on the surface of the insulation board, wherein the insulation board and the fireproof board are fixed by using steel flat and bolts. The method has a simple construction process, and materials used in the method have lower cost. The invention also discloses the cold region tunnelelectric heat tracing active insulation antifreezing facility constructed by adopting the method is environmentally-friendly, energy-saving, and convenient for construction and maintenance, and has an intelligent active insulation characteristic.

Description

technical field [0001] The invention relates to a construction method for tunnel heat preservation and antifreeze facilities, in particular to a construction method for tunnel electric heat tracing active heat preservation and antifreeze facilities in cold regions. Background technique [0002] Highway tunnels in seasonally cold regions are generally mountain-crossing tunnels. Due to the perennial flow of water in the surrounding environment, the surface of the secondary lining at the entrance of the tunnel appears as icicles hanging on the roof and icicles hanging on the side walls. Comes a high risk. At the same time, frost damage also brings many structural damages to the tunnel concrete, such as serious weathering of the lining concrete surface, cracking of the vault, and extrusion of the side wall. After the tunnel has been used for a period of time, due to leakage and freezing damage, the water behind the secondary lining cannot be drained, and the freeze-thaw cycle o...

AI Technical Summary

Problems solved by technology

[0004] With the vigorous development of highway construction in my country and the continuous improvement of highway tunnel technology, for highway tunnels in cold regions, if the surface heat insulation treatment method of directly laying a thermal insulation layer on the lining concrete surface is still adopted, this method The temperature on the surface of the secondary lining cannot be kept stably above 0°C, and the expected effect cannot be achieved

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