Construction method for prefabricated assembly of irrigation channel and cast-in-place concrete coping

Abstract

The invention relates to a construction method for prefabricated assembly of an irrigation channel and a cast-in-place concrete coping. The construction method comprises the steps that 1, an excavator is used for excavation at a designed position, during excavation, a soil loosening device arranged at the front end of a chassis of the excavator is used for scarifying pre-excavated groove soil, and then a U-shaped groove foundation pit is easily excavated in cooperation with a U-shaped excavator bucket; and 2, a cushion layer is arranged after the bottom of a U-shaped groove is compacted, the cushion layer is laid between soil bodies through concrete, and a polytetrafluoroethylene coating is sprayed to the upper portion of the cushion layer. The construction method has the beneficial effects that the groove can be formed at a time under the construction condition of hard soil frozen soil, the slope surface is smooth and flat, the slope top is straight and attractive, and manual finishing is not needed; the prefabricated U-shaped groove can be produced through an assembly line, and the production efficiency is high; the on-site construction workload is reduced; the requirement for hoisting precision is reduced, and the construction difficulty is lowered; and the problems that a connecting gap of the prefabricated U-shaped groove is permeable, a traditional concrete coping and a concrete channel are weak in connecting strength, and the coping is prone to falling off are solved.

Description

technical field [0001] The invention relates to an artificial waterway structure for agricultural soil irrigation and / or drainage, in particular to a construction method for prefabricated assembly of irrigation channels and topping with cast-in-place concrete. Background technique [0002] Concrete irrigation channels are widely used in farmland water conservancy projects. How to quickly realize the prefabricated assembly of concrete irrigation channels and ensure the quality of cast-in-place concrete capping is very important. The existing concrete prefabrication and assembly technology for irrigation channels has problems such as poor connection and joint water permeability. The existing concrete capping includes cast-in-place concrete capping and prefabricated concrete capping, and there are problems such as weak connection between the capping and the channel. [0003] Therefore, it is necessary to design a new construction method of prefabricated assembly and cast-in-pla...

AI Technical Summary

Problems solved by technology

The existing concrete prefabrication and assembly technology for irrigation channels has problems such as poor connection and joint water penetration. The existing concrete capping includes cast-in-place concrete capping and prefabricated concrete capping, and there are problems such as weak connection between the capping and the channel.

[0003] Therefore, it is necessary to design a new construction method of prefabricated assembly and cast-in-place concrete roofing for irrigation canals, which can effectively reduce engineering costs, adopt centralized prefabrication and on-site assembly methods for construction, and speed up construction. The cast-in-place concrete roofing formwork system effectively solves the traditional The connection strength between the concrete cap and the concrete channel is weak, and the cap is easy to fall off

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