Mountain river pebble beach group linked renovation method based on gradient principle

Abstract

The invention discloses a mountain river pebble beach group linked renovation method based on a gradient principle. The mountain river pebble beach group linked renovation method is characterized by setting two control conditions needed in shoal channel flow renovation, namely the unit discharge control condition and the gradient control condition, and construction and management are conducted by obtaining submerged dike specification data through a water conservancy simulation test according to the control conditions. In the control conditions, the linkage condition and the gradient principle of riverbeds are sufficiently considered, the number of model test groups is greatly reduced, the shoal renovation success probability is improved; finally the channel size can be better improved, the flow state can be improved and the silt is prevented from accumulating in the channel after obtained submerged dike data are implemented. Meanwhile, the submerged dike has the advantages of being simple in structure, fast and convenient to implement, low in implementation cost, good in strength and impact resistance and long in service life, and is suitable to be used in mountain rivers.

Description

technical field [0001] The invention belongs to the field of river governance, and in particular relates to a method for linkage regulation of pebble beach groups in mountainous rivers based on the gradient principle. Background technique [0002] Rivers in mountainous areas mainly flow through mountainous areas and most hilly areas, and are characterized by sharp rises and falls in water levels, steep slopes, and swift currents. The upper reaches and many tributaries of the Yangtze River, Yellow River, Pearl River, Minjiang River and Lancang River are all mountainous rivers. In mountainous rivers, there are rapid, shallow, dangerous and other hazards that hinder navigation, which will cause great maintenance to shipping, and need to be adjusted to meet shipping needs. Water transportation is by far the most economical and environmentally friendly mode of transportation. Especially in the central and western regions of China, the cost of rail and road transportation is hig...

AI Technical Summary

Problems solved by technology

[0005] In addition, because the submerged dam is submerged underwater all the year round, it bears a large impact force of the water flow, and the bubbles in the mountainous rivers are often swirling, and the flow state is extremely turbulent, so the submerged dam is prone to water damage

Ordinary submerged dams have the defects of insufficient strength, poor overall stability and short service life

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