Anti-frost heaving canal lining plate containing thermal insulation material

Abstract

The invention discloses an anti-frost heaving canal lining plate containing a thermal insulation material. The anti-frost heaving canal lining plate comprises two prefabricated lining plate forms, namely, a rectangular plate and a six-edge plate, and is characterized in that two cavities of which one ends are open are arranged inside the lining plate; one of the two cavities is cuboid and the other of the two cavities is approximate isosceles trapezoid-shaped; the cavities are filled with the thermal insulation material through on-site foamed EPS casting or direct foam plate filling; a separation block of which the thickness is not smaller than 2 cm is arranged between the adjacent cavities; the thickness of the surrounding concrete is not smaller than 2 cm; the thickness of the cavities (the thickness of an insulating layer) can be determined through calculating the local freezing depth; and the entire lining plate except the insulating layer is integrally prefabricated through concrete. The anti-frost heaving canal lining plate has the advantages that canal foundation soil keeps warm, the frost heaving amount is decreased, the project cost is reduced, the construction is facilitated, and waste plastic is fully utilized, the anti-frost heaving canal lining plate can be widely applied to northern canals, and the water delivery of the canals is guaranteed to be safe.

Description

technical field [0001] The invention relates to the field of water conservancy engineering, in particular to a thermal insulation lining structure of a water delivery channel. Background technique [0002] In permafrost regions, the lining structure of water conveyance channels is often damaged due to frost heave of channel foundation soil. It is manifested in the form of uplift, bulging, cracks, protrusions, collapse and dislocation, that is, foundation soil erosion. While generating a large amount of leakage, it seriously threatens channel security. [0003] The current anti-frost heave measures include: foundation soil replacement, drainage measures, structural measures and thermal insulation measures. [0004] The amount of foundation soil replacement and filling is large, and the project cost depends on the abundance of local coarse-grained materials. During the operation period, the intrusion of fine-grained soil often leads to failure of anti-frost heave. Drainage ...

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Problems solved by technology

[0006] During construction, the whole piece of thermal insulation material is laid under the lining structure, and the thermal insulation effect is good, but there are two problems: one is that the construction is difficult and the construction process is easily damaged; Excessive pressure and low buoyancy caused the lining to be jacked up and damaged. This has happened many times in Xinjiang, threatening the safety of water delivery in the channel

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