Insulation and anti-frostbite swelling phase change insulation board for canal subsoil in salty and cold regions

Abstract

The invention discloses an insulation and anti-frostbite swelling phase change insulation board for canal subsoil in salty and cold regions and an insulation, seepage-proofing and anti-frostbite swelling method of the insulation and anti-frostbite swelling phase change insulation board. The insulation and anti-frostbite swelling phase change insulation board comprises a phase change insulation seepage-proofing board, non-return capillary pipes and a concrete board, wherein the phase change insulation seepage-proofing board communicates with the non-return capillary pipes, the concrete board isarranged on the phase change insulation seepage-proofing board, the phase change insulation seepage-proofing board is provided with a plurality of lattices, the four side walls of the lattices are provided with communication holes, the four edges of the phase change insulation seepage-proofing board are provided with long baffles, and prepared salt solutions are injected into the phase change insulation seepage-proofing board from a solution injection port and flow among the lattices through the communication holes, so that a phase change layer is formed. The non-return capillary pipes are inserted into one end of the soil to absorb redundant pore water in the soil to fill the phase change layer. The phase change layer can store and release heat well under the diurnal variation of temperature and solar radiation and maintain the right temperature of the soil. Local agricultural abandoned plastics are remolded as materials, the insulation and anti-frostbite swelling phase change insulation board has flexibility and seepage-proofing functions, and the poor plastic heat-conducting property has good heat insulation effects.

Description

technical field [0001] The invention relates to the field of water conservancy engineering, in particular to a thermal insulation and anti-frost heaving phase-change thermal insulation board for canal foundation soil in salty and cold regions. Background technique [0002] In Northwest China, such as Inner Mongolia and Xinjiang, due to drought, large temperature difference between day and night, and serious evaporation, the soil in irrigation areas is prone to salinization. At the same time, the low temperature in winter causes frost heaving of canal foundation soil and serious frost damage of lining damage. The causes of freezing damage are mainly three factors: temperature, soil and moisture, among which temperature has the greatest impact, followed by moisture and soil. Most of the existing technologies mainly use closed-cell foam board, geomembrane + insulation board and other structures to keep the canal foundation soil warm and insulated mainly from the perspective of ...

AI Technical Summary

Problems solved by technology

Therefore, the effect of the canal foundation soil on mitigating frost heaving is not good, and the thermal insulation layer of the prior art is a multi-layer structure, the structure is relatively complex, and it is prone to water seepage and failure for a long time

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