Channel joint leakage prevention construction method

Abstract

The invention discloses a constructing method for a kind of water-tight channel seam: the invention preforms a seam with width of 3.0cm-8.0cm when lays concrete preformed block or pouring concrete in field, the depth of the sea is not less than 5.0cm, the invention lays a layer of sands (particle radius 0.1-1.0 cm) on the bottom of the seam, then the concrete sand pulp is poured into the seam and flat with the concrete block with pulp pouring machine or manually, sprays M1500 water repellent compound on the surface of seam and in range of 3.0-5.0 at two sides of the seam.

Description

technical field [0001] The invention belongs to a construction method for a canal joint, and relates to a method for a canal anti-seepage joint. Background technique [0002] With the development of social economy, people pay more attention to water resources and environment, especially China is already a water-poor country, saving water is an important task that the country cares about, and agricultural water is the largest water user in my country, accounting for about 72%. Among them, the loss of agricultural water delivery is the largest, and the amount of water leaked from water delivery channels accounts for about 50%. Therefore, the anti-seepage technology of channel joints has become a hot spot in the water conservancy industry in recent years. [0003] At present, the joints of agricultural water delivery channels are mostly filled with cement mortar. This method has the following disadvantages: [0004] 1. The concrete poured for the second time is not dense and th...

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Problems solved by technology

[0004] 1. The concrete poured for the second time is not dense and the contact surface of the original concrete often produces cracks and leakage;

[0005] 2. The plasticity of cement mortar is small, and the frost heave resistance is poor. After the construction is completed, after a season of cold and heat changes, some cracks will be caused to the channel due to thermal expansion and contraction, especially in the northern region, resulting in high maintenance costs. Some serious cracks or frost heaves even damage the canal body and the canal has to be re-laid

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