A construction method for hanging irrigation canals

Abstract

The invention discloses a construction method of an irrigation canal by lifting and placing. The construction method comprises the following steps of a, construction preparation is carried out; b, earth excavation and compacting are carried out; c, concrete canal section is prefabricated; d, a concrete canal section and a canal section butt joint device are installed; e, concrete canal section combination units are washed; f, the concrete canal section combination units are placed; g, two adjacent concrete canal section combination units are connected; h, a cushion layer in an area between theconcrete canal section and an irrigation canal construction section is constructed; i, a concrete butt joint section in connecting area of every two adjacent concrete canal section combination unitsis constructed; j, a concrete water inlet end part and a concrete drainage end part are constructed; and k, water discharging test is carried out, and project checking and accepting is carried out after conformity. According to the method, the influence caused by a height error of a bottom face of the irrigation canal construction section can be eliminated, the concrete canal section can completely act on the bottom face of the irrigation canal construction section, so that the two adjacent concrete canal section combination units are firmly connected with each other, and the bearing capacityof the whole section concrete irrigation canal is improved.

Description

technical field [0001] The invention belongs to the technical field of water conservancy irrigation, and in particular relates to a construction method for hanging irrigation canals. Background technique [0002] With the rapid development of agriculture, the construction of water conservancy irrigation in agriculture has become more and more important, which is related to the bumper harvest of agricultural production. Therefore, the country invests huge manpower, material resources and financial resources in the construction of farmland water conservancy projects every year. The irrigation canal is an important part of the construction of farmland water conservancy, and it realizes the last mile irrigation. Most of the traditional irrigation canals are constructed by pouring concrete on site. The disadvantages are high construction cost, long construction period, serious damage to the production environment, and easy damage and difficult maintenance. Later, some people beg...

AI Technical Summary

Problems solved by technology

In the construction process, in order to facilitate the connection of the two sections of concrete U-shaped grooves, the excavated trenches need to be flattened, but the bottom surface of the trenches cannot be completely flat, and there is a certain height error. When steel bars are connected between them, there may be virtual contact between the concrete U-shaped groove and the bottom surface of the groove, resulting in a decrease in the bearing capacity of the entire irrigation canal

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