Method for identifying pebble sand waves on upper reach channels of Yangtze River

Abstract

The invention discloses a method for identifying pebble sand waves on upper reach channels of the Yangtze River. The method comprises the following steps that actual measurement of fundamental data is conducted on a channel to be distinguished, or the fundamental data are calculated and acquired by establishing a two-dimensional mathematical model of a river reach; the range of the water flow of the water reach is determined; the transport and distinguishing coefficient of bed loads in the range of the channel is calculated; whether pebble sand waves are generated or not nearby the channel in the range of an engineering river reach is judged according to a calculating result; counter measures are taken after the sand waves happen. According to the method, the movement rule of the pebble sand waves is systematically studied through indoor flume experiments and site inspection data analysis, the critical conditions of occurring of the pebble sand wave movement are obtained, an identifying technology for identifying whether the pebble sand wave movement occurs or not in the upper reach channels of the Yangtze River is provided, ships are effectively protected to navigate safely, and the problem of lacking the identifying method for the pebble sand wave movement currently is better solved.

Description

technical field [0001] The invention belongs to the technical field of river pebble research, and in particular relates to a method for identifying pebble sand waves in the upper reaches of the Yangtze River. Background technique [0002] The Yibin-Chongqing section of the upper reaches of the Yangtze River (referred to as the Xuyu section), with a total length of 385km, is joined by tributaries such as the Minjiang River, Tuojiang River, Changning River, Chishui River, and Qijiang River. The drainage basin covers Sichuan, Guizhou, Yunnan, and Chongqing. Since ancient times, the Syria-Chongqing waterway has been the main artery of water transport connecting Sichuan, Guizhou, and Chongqing. As an important water channel between the provinces along the river in the west and the middle and lower reaches of the Yangtze River and the coastal areas, the Syria-Chongqing waterway occupies a very important position in the western transportation network. [0003] Some key shoal hazard...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide a method for identifying pebble sand waves in the upper re

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