Temperature and humidity control system for subgrade structure of seasonal frozen soil region

Abstract

The invention provides a temperature and humidity control system for a subgrade structure of a seasonal frozen soil region. The temperature and humidity control system comprises a drainage preventionsystem arranged at the lower part of a subgrade, a heating device is arranged in the middle of the subgrade and a heat insulation layer arranged at the upper part of the subgrade, wherein the drainageprevention system comprises a substrate composite water drainage plate arranged at the bottom of the subgrade; water drainage side ditches are arranged at two sides of the substrate composite water drainage plate; a herringbone composite water drainage plate is arranged at a frozen line part above the substrate composite water drainage plate. According to the temperature and humidity control system provided by the invention, efficient heating and a heating wire and efficient thermal conductivity of a heating pipe are sufficiently expressed and evaporation of liquid-state water in substrate soil is facilitated; a waterproof and drainage structure and a solar cell for supplying power to the heating device for a long period are combined, so that the subgrade soil keeps a low-moisture-contentstate for a long period, a soil body is prevented from being frozen and the deformation of the subgrade is effectively inhibited.

Description

technical field [0001] The invention belongs to the field of frozen soil research, in particular to a temperature and humidity control system for subgrade structures in seasonal frozen soil areas. Background technique [0002] In the construction of highways and railways in alpine regions, there are often seasonal frozen soils in the foundation of the roadbed. Due to the special physical properties of seasonal frozen soil, under the action of freezing and thawing, the roadbed will be damaged or even deformed, causing huge damage to the operation of roads and railways. security risks. In particular, the Western Sichuan Plateau belongs to the mixed area of ​​the subarctic monsoon climate zone and the plateau continental climate in terms of climate characteristics. The climate is mild and cold, and there is also a lot of rainfall. Entering the freezing period, a lot of heat will be needed to prevent frost heaving, and it is very important to drain or evaporate the water in the...

AI Technical Summary

Problems solved by technology

However, this invention does not consider the impact of excess solar photovoltaic power supply in summer and insufficient power in winter, and does not mention the impact of moisture on the roadbed. In summer, the condensation section of the hot rod stops working, and the device stops working

[0005] Therefore, there is still the problem that seasonal frozen soil cannot be in a relatively stable physical state for a long time due to repeated freezing and thawing.

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