Channel improvement design method based on fluvial facies relation

Abstract

The invention discloses a channel improvement design method based on a fluvial facies relation. The method comprises the following steps that firstly, characteristic flow of fracture surfaces of a channel along the stroke is calculated; secondly, the fracture surface area, the river width and the average water depth characteristic value of a channel river bed are calculated; thirdly, a fluvial facies relational expression of the channel is fitted; fourthly, the width-depth ratio of the channel is calculated, and classified statistics is carried out; fifthly, the size design of the channel improvement project is carried out according to the fluvial facies relation and the width-depth ratio determined in the fourth step. The method overcomes the defect that original channel improvement excessively depends on the project practical accumulated experience, the design method is simple, time is saved, and the method can adapt to and meet the requirement for the improvement of channel sections of different riverbed topographic features.

Description

technical field [0001] The invention relates to a design method for waterway regulation, in particular to a design method for waterway regulation based on river phase relations. Background technique [0002] With the development of my country's river basin economy, the development process on both sides of the river basin is constantly accelerating. In order to meet the needs of rapid growth in traffic volume and the development needs of large-scale ships, the demand for waterway grades is also getting higher and higher. In practice, engineering methods are mainly used to improve the level of waterways, and to improve or maintain the navigation scale of waterways. The commonly used methods are dredging and renovation. The cost of dredging is high and it is easy to silt. The waterway regulation method can make the best use of the situation, follow the river situation, and has the advantages of stabilizing and improving the navigation conditions of the waterway. [0003] The ...

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Problems solved by technology

The disadvantages of this design method are: first, it relies too much on the accumulated experience of engineering practice, which takes a long time; second, the regulation of different types of waterway sections such as estuary sections is still designed according to the theory of inland waterway regulation, which cannot meet the requirements of the actual entire course of the waterway. Requirements for river bed landform improvement

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