Photopolymerization anti-freeze heave heat collection device and its roadbed

Abstract

Embodiments of the present invention provide a photopolymerization type anti-frost heave heat gathering device and its roadbed, which relate to the technical field of engineering construction in seasonally frozen soil regions. The light-condensing anti-frost expansion heat-gathering device includes a condenser cover and a heat-collecting tube, and the condenser cover is used to be installed on the outside of the roadbed; the heat-collecting tube includes a heat-absorbing section and a heat-radiating section that are connected to each other, wherein the heat-absorbing section is inserted into the condenser Inside, the heat release section is inserted into the interior of the roadbed, and the concentrator is used to focus sunlight to the heat absorption section to heat the heat absorption section, and the heat absorption section is also used to transfer the absorbed heat to the heat release section, and the heat release section is used for Heated roadbed. This embodiment provides a photopolymerization type anti-frost heave heat gathering device that can use solar energy resources to achieve balanced and flat heating of the subgrade through the leveling and heating of the temperature field of the subgrade and the key regulation of the subgrade prone to frost heaving, and effectively avoid subgrade frost heaving in seasonally frozen soil areas. , Uneven undulation and other engineering diseases.

Description

technical field [0001] The invention relates to the technical field of engineering construction in seasonally frozen soil regions, in particular to a light-polymerization heat-gathering device for preventing frost heaving and a roadbed thereof. Background technique [0002] The Xige section of the Qinghai-Tibet Railway is located in the northeast of the Qinghai-Tibet Plateau. The railway line passes through the coastal plain, alluvial plain, and ice sheet platform on the northern shore of Qinghai Lake. The average altitude is 3220m, and the average annual precipitation is 376mm. The precipitation is unevenly distributed, and most of it is concentrated in July-September , the annual average temperature is -0.6°C, and the average temperature in January, the coldest month, is -20.6°C. The Xige section of the Qinghai-Tibet Railway has a cold climate, a strong ability to freeze the temperature, and a large freezing depth. The maximum freezing depth can reach 1.8m, which belongs t...

AI Technical Summary

Problems solved by technology

However, there is still a lack of research on the development characteristics and distribution of freeze-thaw engineering diseases under special conditions such as high water level, coarse fill, and strong freeze-thaw in the Xige section of Qinghai-Tibet Railway.

Coarse particle replacement, chemical grouting, waterproof curtain and other methods used in conventional areas are limited by engineering conditions such as normal train running and uninterrupted construction, as well as disposal caused by strong freezing and thawing of soil. Partial cracking and the overall closure of the lower part of the subgrade are extremely difficult, which makes it difficult for these methods to meet the actual engineering needs.

Images