Fill channel anti-frost heaving and anti-seepage structure and construction method

Abstract

The invention discloses a fill channel anti-frost heaving and anti-seepage structure and a construction method. The structure is characterized in that drainage channels are arranged on the two sides of the channel; a wind-blown sand layer is arranged on the bottom and two sides of an embankment of the channel; a plastic film is arranged on the wind-blown sand layer; a slope toe on a connection position of the bottom and the embankment of the channel is cast-in-place concrete; prefabricated concrete blocks are laid on the plastic film; and a capping concrete board is arranged on the top of the embankment of the channel. The construction method comprises the following steps: digging a drainage open channel; clearing channel base earth; carrying out filling to form the embankment of the channel; laying wind-blown sand; laying the plastic film; casting the arc channel-bottom concrete in place; laying the prefabricated concrete blocks; and laying the capping concrete board. The problems of the common channel design such as seepage, frost heaving and destruction, and not stable quality are eliminated, the wind-blown sand layer is arranged on the bottom and the two sides of the embankment of the channel, the foundation bearing force is increased, the frost heaving is lightened; the polyethylene plastic film is laid on the wind-blown sand layer to prevent seepage of the channel; concrete is arranged on the film to prevent water flow from scouring and seeping; the concrete arc channel bottom is cast in place, the stress condition is good and the stress concentration is prevented; and the drainage open channel prevents underground water retention and eliminates frost heaving.

Description

technical field [0001] The invention belongs to the technical field of hydraulic structure engineering, and in particular relates to an anti-frost heaving and anti-seepage structure and a construction method of filling channels in hydraulic engineering. Background technique [0002] Agricultural water consumption is the largest water user in my country. According to statistics, my country’s agricultural water consumption accounts for more than 70% of the country’s total annual water consumption. However, a large number of canals and branch canals have been built in my country without anti-seepage, and the water utilization coefficient of canal systems is very low. A large amount of irrigation water is lost in the process of channel water delivery, especially in my country, a region where water resources are unevenly distributed and very scarce. Channel leakage is the direct cause of the low utilization coefficient of canal water. After anti-seepage through channels, on the on...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an anti-frost heave and anti-seepage structure for filling channels, which overcomes the defect that the existing channel anti-seepage technology cannot simultaneously take into account the requirements of anti-scour, anti-seepage and anti-frost heave

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