Channel anti-frostbite swelling combination type integrated seepage-proofing and thermal insulation board

Abstract

The invention relates to a channel anti-frostbite swelling combination type integrated seepage-proofing and thermal insulation board. The seepage-proofing and thermal insulation board comprises a plurality of combination board bodies which are freely connected in a combined mode, wherein each combination board comprises a middle flat board structure and a peripheral connection interlocking structure, and each middle flat board structure comprises two seepage-proofing layers and a thermal insulation board body arranged between the two corresponding seepage-proofing layers; each peripheral connection interlocking structure comprises transverse beams and vertical beams, the transverse beams are arranged on the two opposite sides of the corresponding flat board structure and are of corner structures, the vertical beams are arranged on the other opposite sides of the corresponding flat board structure, the inner side of one corner structure of one combination board body makes contact with one vertical beam of one adjacent combination board body in an abutting mode, and the outer side of the corner structure of the combination board body makes contact with the outer side of one corner structure of another adjacent combination board body. The seepage-proofing and thermal insulation board has the advantages that the seepage-proofing function and thermal insulation function are integrated, and the combination technique is adopted for integrating the seepage-proofing function and thermal insulation function; the combination structure can guarantee connection stability among panels, and seepage-proofing reliability of joints of the panels can be guaranteed easily.

Description

technical field [0001] The invention relates to the technical field of canal protection, in particular to a combined anti-seepage and thermal insulation board for anti-frost heaving of canals. Background technique [0002] In the western and northern regions of my country, the damage and leakage of the rigid channel lining caused by the frost heaving of the channel bed foundation are serious frost damage problems that are common in channel engineering at present. The basic factors of frost heaving in channel soil are negative temperature, frost heaving soil and soil water, all of which are indispensable. Foreign developed countries adopt the method of replacing frost-heaving soil and anti-seepage when preventing channel frost-heave damage: such as changing concrete to reinforced concrete, and at the same time replacing the frost-heave soil layer under the anti-seepage plate with gravel materials, and adding sand and gravel Lay a layer of plastic film between the material an...

AI Technical Summary

Problems solved by technology

Engineering practice shows that although it plays a certain role in anti-seepage and heat preservation, there are still obvious defects: ① Due to the certain water absorption of polystyrene board, the insulation effect decreases year by year after long-term use; ② The gap between geomembrane and polystyrene board The friction coefficient is small, which is easy to cause slope sliding; ③ The construction of anti-seepage and heat preservation materials is cumbersome and the cost is high

④The more important point is that the geomembrane and the polystyrene board are separate anti-seepage boards and insulation layers, and the puncture resistance of the geomembrane deviates. If the geomembrane is damaged during construction and operation, the overall anti-seepage performance will be greatly reduced At the same time, the insulation effect of the insulation layer is reduced due to water absorption, and the anti-frost heave effect of the entire project cannot meet the design requirements

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