Determination method for low-water ecological restoration project layout of straight stream channel

Abstract

The invention discloses a determination method for a low-water ecological restoration project layout of a straight stream channel, and belongs to the technical field of ecological river restoration. According to the technical scheme, the determination method for the low-water ecological restoration project layout of the straight stream channel is characterized by comprising the following steps that 1, a flow mathematic model is built; 2, low-water ecological restoration stream channel water flow characteristics are calculated; 3, the low-water ecological restoration project plane layout is analyzed and determined; 4, the influence of a low-water ecological restoration project on draining flood is verified. According to the determination method for the low-water ecological restoration project layout of the straight stream channel, on the basis of analyzing a winding river morphological characteristic empirical formula under the natural condition, numerical simulation is utilized, the plane layout is supplied to the low-water ecological restoration project design of a large number of existing straight stream channels with limit space, and the method is scientific and reasonable.

Description

technical field [0001] The invention relates to a method for determining the layout of a low-water ecological restoration project in a straight river, and belongs to the technical field of river ecological restoration. Background technique [0002] In recent years, excessive human disturbance has degraded the original natural ecosystems of many river courses. For the sake of saving land and flood safety, people cut the bends and straighten the river, and the cross section of the river is basically unchanged along the course. This kind of single-form river reduces the diversity of the ecological environment of the water flow and leads to the degradation of the river ecosystem. In order to meet the needs of people to protect the environment and get close to nature, it is necessary to carry out ecological restoration of rivers, especially urban rivers, so that they can become ecological landscape rivers with twists and turns, diverse water flows, and rapid and slow coexistence....

AI Technical Summary

Problems solved by technology

[0004] At present, there are many engineering practices for large-scale ecological restoration, but small-scale ecological restoration is rarely applied, and the current layout design of small-scale ecological restoration along straight rivers is mostly based on the statistical data of natural river bends. Empirical methods determine the design parameters. Therefore, inventing a scientific and reasonable method for determining the layout of low-water ecological restoration projects in straight rivers has become an urgent task in the field of river ecological restoration technology.

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