Method for treating plain river course

Abstract

The invention is a method for treating a plain river course. The technical problem to be solved by the method is to completely solve a world-class problem of plain river course regulation. According to the technical scheme, a diversion dam is constructed at a position between the boundary point of a canyon river and a lowland river and the boundary point of the lowland river and an aboveground river, two river channels are separated from the diversion dam, one is a flood water flow river, the other is a low water flow river, the navigation capacity is expanded, and the expanded navigation capacity is maintained throughout the year.

Description

Technical field: [0001] The invention relates to the technical field of water conservancy engineering, in particular to a method for river channel regulation. Background technique: [0002] In the plain area, the small drop of the river channel is easy to form an above-ground river, the water flow is slow, and the sand and gravel are not easy to wash away. In the dry season, the beach is shallow, the dark beach is everywhere, and navigation is dangerous. The river channel in the plain area cannot be improved by building a reservoir with a high water level. The river channel is open to navigation. The existing technology adopts the method of dredging the channel to expand the water depth and improve the channel. Since the plain river bed is characterized by ebb and flow, dramatic evolution, and easy siltation, after a period of time after dredging, there will be many beaches and shallow water. The decline of shallow navigability is the most difficult problem to solve, so the ...

AI Technical Summary

Problems solved by technology

[0005] The diversion dam has two functions, one function is the water level of the Yonggao diversion reservoir to the water level during the flooding period, so that the diversion reservoir can reach the same navigation capacity as that of the river channel in the reservoir area; the other function is to regulate the amount of water discharged into the river. size, so as to maintain the designed water depth of the dry river throughout the year, so that the dry river maintains the maximum navigable capacity throughout the year, and solves the problem of reduced navigability during the dry period of the plain river;

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