Large-section flood discharge ditch for mountainous terrain and construction method thereof

Abstract

The invention relates to the technical field of mountainous flood discharge, and particularly relates to a large-section flood discharge ditch for mountainous terrain and a construction method thereof. The large-section flood discharge ditch for the mountainous terrain comprises a flood discharge ditch body, wherein the flood discharge ditch body comprises a flood discharge ditch bottom plate andflood discharge ditch side walls arranged on the two sides of the flood discharge ditch bottom plate, and a water drop energy dissipation structure is arranged on the flood discharge ditch bottom plate. The construction method of the large-section flood discharge ditch for the mountainous terrain comprises the following steps that 1, the flood discharge ditch body is constructed, wherein the flooddischarge ditch bottom plate and the flood discharge ditch side walls are constructed; and 2, according to the plane turning angle and the longitudinal slope gradient of the flood discharge ditch body, the water drop energy dissipation structure is correspondingly constructed on the flood discharge ditch bottom plate; when water flow flows through a channel formed by the flood discharge ditch bottom plate and the flood discharge ditch side walls, the energy dissipation effect of the water drop energy dissipation structure is utilized to reduce the kinetic energy of the water flow, so that theimpact effect of the water flow on the flood discharge ditch body and a downstream reservoir area is reduced.

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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