Anti-frost heaving and anti-seepage structure and construction method of filling channel

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 particularly relates to an anti-frost heave and anti-seepage structure and a construction method for filling channels of hydraulic engineering. Background technique [0002] Agricultural water is a major 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. At present, my country has built a large number of trunk and branch canals without anti-seepage, and the canal water utilization coefficient is very low. A large amount of irrigation water is lost in the process of channel water delivery, especially in a region such as my country where water resources are unevenly distributed and very scarce, channel leakage is the direct cause of the low water utilization coefficient of the canal system. After the canal seepage prevention, on the one hand, it can impr...

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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