Method for improvement and protection of spur dike channel of mountain river

Abstract

The invention discloses a method for improvement and protection of a spur dike channel of a mountain river. The method comprises the steps that (1) the channel improvement water level and the channel improvement line width are determined according to the direction of the channel, the planned line form, the hydrological characteristics of the river, the riverbed components and the erosion and deposition evolution characteristic, and (2) the position and the length of a spur dike are determined according to the shipping hindering characteristic of a dangerous shoal and the improvement line width. The method for improvement and protection of the spur dike channel of the mountain river is characterized by further comprising the steps that (3) a dike body structure is laid, wherein a layer of block shaped like the twisted Chinese character 'Wang' is laid on the downstream slope of a dike body; (4) the bottom of the head of the dike is protected; (5) the bottom of the root of the dike is protected; (6) a bank protection structure is arranged. The method is particularly suitable for improvement and protection of the spur dike channel of the mountain river, the strength of the root of the dike and the strength of the head of the dike can be improved, stronger current impact force can be resisted, the overall service life is prolonged, and the method has the advantages of being capable of preventing sediment accumulation, stabilizing a riverbed, protecting the ecological environment and achieving safe flood discharging.

Description

technical field [0001] The invention belongs to the field of river management, and in particular relates to a method for regulation and protection of a spur channel in mountainous rivers. Background technique [0002] A groyne is a hydraulic structure used for river regulation, because one end of it is connected to the river (sea) bank, and the other end extends into the water, forming a "D" shape with the embankment, so it is called a groyne. The main function of the spur dike is to protect the river bank from scour damage caused by the direct erosion of the incoming flow. At the same time, it also plays a role in improving the channel, maintaining the river facies and protecting the diversity of water ecology. It can hinder and weaken the erosion effect of oblique waves and coastal currents on the coast, promote the siltation of dam fields, form new beaches, and achieve the purpose of protecting the coast. The cross-section of the spur dam is trapezoidal with a narrow top...

AI Technical Summary

Problems solved by technology

In the process of managing shoals, spur dikes are bound to be widely used as waterway improvement structures, but spur dikes are prone to water damage, and the head and root of the dam are the key parts of water damage

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