A method and structure for channel anti-seepage and anti-frost heave

Abstract

The invention provides a method for seepage and frost heaving prevention of a channel. The method comprises the following steps: 1) geotechnical cloth is laid on the surface of the channel, and concrete is poured on the geotechnical cloth along a connection section of the channel to allow the connection section to be arc-shaped; 2) a seepage and frost heaving prevention layer is laid from the end part of the cast-in-place concrete along a channel slope to the top of the channel; and 3) a net structure is laid on the seepage and frost heaving prevention layer, and a concrete slab is placed in a net movably; and 4) gaps between the concrete slab and the grid are filled with cement mortar. The invention further discloses a structure for the seepage and frost heaving prevention of the channel. The method and the structure have the following beneficial effects: frost heaving deformation is small, the ice push prevention ability is high, and a frost heaving prevention effect is good.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, and more specifically relates to a method and structure for anti-seepage and anti-frost heave of canals. Background technique [0002] Frost heave damage and leakage of channels are common problems in water conservancy projects in cold northern regions of my country. The channel slope protection will produce frost heaving deformation under the action of negative temperature in winter, and the temperature rise in spring will cause it to melt and cause thawing deformation. In spring, ice thrust will be generated under the action of wind and waves. . [0003] At present, some achievements have been made in anti-seepage and anti-frost technology of canals. Canal anti-frost-heave materials have changed from single materials to composite materials, canal lining forms have changed from single structures to composite structures, and canal construction has developed from semi-mechan...

AI Technical Summary

Problems solved by technology

[0004] The anti-seepage and anti-frost heave structure of the existing channel is single, the anti-frost heave effect is poor, and the capillary water cannot be restrained from rising. Materials such as concrete, asphalt concrete and membrane materials are used as the antifreeze and anti-seepage layer of the channel, which can achieve the purpose of preventing channel leakage, but its anti-frost heave performance is not ideal. The existing block laying simply relies on cement mortar to fill and fix However, there is still the problem of non-uniform frost heave deformation of the concrete slab, which causes damage to other concrete slabs or large-area concrete frost heave damage, and does not fundamentally solve the problem of frost heave prevention

[0005] Therefore, after several freeze-thaw cycles and freezing damage in the existing anti-frost structure of the channel in some harsh environment areas, the anti-frost heave body of the channel will be damaged by frost heave, which will affect the operation efficiency of the channel and increase the maintenance cost of the channel. Therefore, in the cold There is an urgent need for a method that can not only prevent seepage, prevent erosion, but also resist frost heaving in the construction of canals in the region.

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