A combined integrated anti-seepage insulation board for channel anti-freeze heave

Abstract

The invention relates to a channel frost-heave combined integrated anti-seepage insulation board. The anti-seepage insulation board includes a plurality of composite panels connected in any combination. Each composite panel includes a central plate structure and a peripheral connection interlocking structure. The flat plate structure includes two layers of anti-seepage layers and insulation boards arranged between the two layers of anti-seepage layers; the peripheral connection interlocking structure includes beams with curved angle structures arranged on the opposite sides of the flat plate structure, and installed on the other side of the flat plate structure Vertical beams on opposite sides, wherein the inner side of the angled structure of one composite panel is in pressure contact with the vertical beam of the adjacent composite panel, and the outer side is in pressure contact with the outer side of the angled structure of the other adjacent composite panel . The beneficial effects of the present invention are: anti-seepage and thermal insulation functions are integrated, and composite technology is adopted, which not only has the anti-seepage function, but also has the thermal insulation function; the combined structure can ensure the stability of the connection between the boards, and can simply Realize the reliability of sheet joint seepage prevention.

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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