Solar heat collection device facing seasonal frost area roadbed construction, and implementation method

Abstract

The invention discloses a solar heat collection device facing seasonal frost area roadbed construction, and an implementation method, and relate to the technical field of frozen soil roadbed disease control. The solar heat collection device facing seasonal frost area roadbed construction comprises an overground heat collecting unit and a roadbed heat supplying unit, wherein the overground heat collecting unit comprises a heat absorption pipe; an outer sleeve pipe sleeves on the outer part of the heat absorption pipe; a heat insulation cavity is formed between the heat absorption pipe and the outer sleeve pipe; two ends of the heat absorption pipe and the outer sleeve pipe are connected through sealing sections; the roadbed heat supplying unit comprises a heat supplying pipe; the heat absorption pipe communicates with the heat supplying pipe; and heat transfer fluids are filled in the heat absorption pipe and the heat supplying pipe. According to the solar heat collection device facingseasonal frost area roadbed construction, and the implementation method provided by the invention, seasonal heat collection-output balance of a frozen soil roadbed is reasonably and effectively controlled, and an anti-freezing expansion effect is more effective; the energy is saved, and the cost and the manual labor intensity are reduced; the solar heat collection device is high in heat collectionefficiency, good in freezing resistance, leakproof, compact in structure, small in size, small in occupied area, flexible in arrangement ways, and capable of being dispersedly arranged; and comparedwith a boundary protection effect of an existing heat insulation material, all-directional close-range heat supply of a freezing expansion stratum can be realized.

Description

technical field [0001] The invention relates to the technical field of roadbed disease prevention and control in frozen soil regions, in particular to a solar heat collection device and an implementation method for roadbed projects in seasonal frozen soil regions. Background technique [0002] Frozen soil refers to various rocks and soils with a temperature at or below 0°C and containing ice. Soil is a material that is extremely sensitive to temperature. Under a negative temperature environment, the water in the soil will condense into ice and expand in volume, thereby reducing the pore volume of the soil. At the same time, the soil skeleton is further deformed under the additional stress of ice expansion. , the physical and mechanical properties of the soil will change greatly. The freezing and thawing cycle process of seasonal frozen soil has a great influence on the soil properties, so the roadbed is prone to a series of frost damage such as frost heaving and heaving in ...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a heat pre-storage and real-time supplement to the roadbed, high heat collection efficiency, good frost resistance, leak-proof, compact structure, small volume, flexible layout, and can realize the full protection of frost-heave formations. The solar heat collection device and method for preventing and controlling subgrade frost heaving in seasonally frozen soil areas for azimuth and short-distance heating to solve the problems of poor anti-frost heaving technology in the above-mentioned background technology, high maintenance costs, and poor subgrade heating control effect technical problem

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