Air self-circulation unpowered heating device and roadbed thereof

Abstract

The embodiment of the invention provides an air self-circulation unpowered heating device and a roadbed thereof, and relates to the technical field of seasonal frozen soil area engineering construction. The air self-circulation unpowered heating device comprises a heat collection header, a solar heat absorption box and a heat concentration pipe, wherein the heat collection header is used for being installed outside the roadbed; one end of the solar heat absorption box is inserted into the heat collection header; the solar heat absorption box is used for absorbing solar energy and transferring heat to the heat collection header; the heat concentration pipe comprises a heat absorption section and a heat releasing section which are communicated with each other; the heat absorption section is inserted into the heat collection header; the heat releasing section is used for being inserted into the roadbed; the heat absorption section is used for absorbing heat of the heat collection header and transferring the heat to the heat releasing section; and the heat releasing section is used for heating the roadbed. According to the device, solar energy resources can be utilized, and balanced and flat heating of the roadbed is achieved through flat heating of a ground temperature field of the roadbed and key regulation and control over the parts, prone to frost heaving, of the roadbed, so that engineering diseases such as frost heaving and uneven fluctuation of the roadbed in the seasonal frozen soil area are effectively avoided.

Description

technical field [0001] The invention relates to the technical field of engineering construction in seasonally frozen soil regions, in particular to an air self-circulating non-powered heating device and a roadbed thereof. Background technique [0002] In the seasonally frozen soil area in western my country, affected by low temperature and negative temperature climate environment changes in winter, the soil at a certain depth on the surface will freeze in winter, and the soil will completely melt in the warm season and other seasons, which is called seasonal frozen soil in geocryology. For example, in the area around Qinghai Lake in the central part of Qinghai Province, the average temperature in the coldest month is -20.6°C, and the maximum freezing depth can reach 1.8m, which belongs to a typical seasonal frozen soil area. Such areas are located in coastal plains, alluvial plains, ice sheet platforms and other places, where the groundwater level is shallow, and the roadbed...

AI Technical Summary

Problems solved by technology

[0003] For this kind of problem, methods such as coarse particle replacement, chemical grouting, and waterproof curtains are used in conventional areas, but in seasonally frozen soil areas, due to engineering conditions such as normal train running and uninterrupted construction, as well as soil freezing The cracking of the disposal part caused by the strong action of melting and the difficulty of sealing the lower part of the subgrade as a whole make it difficult for these methods to meet the actual engineering needs.

It is a more feasible method to prevent the freezing of the roadbed by heating the roadbed, but due to the weak research and development of the existing technology, there is still a lack of new measures that can be applied to the actual conditions on site and meet the actual needs

There have been some measures to use solar energy to heat the roadbed, but due to factors such as low work efficiency, need to use electricity, and high costs, it is difficult to meet the actual working conditions and actual needs in the field

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