A large-section flood drainage ditch used in mountainous terrain and its construction method

Abstract

The present invention relates to the technical field of flood drainage in mountainous areas, in particular to a large-section flood drainage ditch used in mountainous terrain and its construction method, wherein the large-section flood drainage ditch used in mountainous terrain includes a flood drainage ditch body, the The flood drainage ditch body includes a flood drainage ditch bottom plate and side walls of the flood drainage ditch arranged on both sides of the flood drainage ditch bottom plate. The flood drainage ditch bottom plate is provided with a drop water energy dissipation structure; The construction method of the flood ditch comprises the following steps: Step 1: construction of the flood discharge ditch body, including the construction of the flood discharge ditch bottom plate and the flood discharge ditch side wall; , correspondingly construct the falling water energy dissipation structure on the bottom plate of the flood discharge ditch; The energy dissipation function reduces the kinetic energy of the water flow, thereby reducing the impact of the water flow on the body of the flood discharge ditch and the downstream reservoir area.

Description

technical field [0001] The invention relates to the technical field of flood drainage in mountainous areas, in particular to a large-section flood drainage ditch for mountainous terrain and a construction method thereof. Background technique [0002] The existing supporting facilities in urban waste landfills often cannot keep up with the development of the city, and the aging is serious. The pressure of the main drainage pipes around the site is too high. During the heavy rain season, the rainwater washes away the slopes and buildings in the site. Safety and environment Risks are becoming increasingly prominent. In order to relieve the pressure of the general drainage pipeline around the site and divert the rainwater in the site, a city waste landfill site needs to build a new rescue and disaster relief drainage channel along the north slope of the site. At present, the following two methods are generally used to construct emergency and disaster relief drainage channels un...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is: in view of the complex terrain, twists and turns, steep mountains and large height difference in mountainous areas in the prior art, when a large-section flood drainage ditch is used as a drainage channel, when the water flow is too large, the flood drainage ditch The inner wall is washed by rainwater. Due to the concentration of energy at the bend or steep slope, the impact effect is large, which may easily cause the structure of the flood discharge ditch to be unstable, and the flow of large flow and high velocity water will cause high-intensity impact on the downstream reservoir area, threatening To solve the safety problems of slopes and buildings in the site, provide a large-section flood drainage ditch and its construction method for mountainous terrain

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