Multifunctional river water retention weir structure

By designing a multi-functional river water-retaining weir structure and using a buoyancy pool to achieve automatic adjustment of weir dams, the barrier problems and manual operation requirements of existing weirs during flooding during flood season are solved, and automated, environmentally friendly and multi-functional river management are achieved.

CN119711425APending Publication Date: 2025-03-28FUJIAN PROVINCIAL INVESTIGATION DESIGN & RES INST OF WATER CONSERVANCY & HYDROPOWER
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Patent Information

Application Number
CN202510051418.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-13
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing weirs will have a barrier effect when floods are flooded during flooding and require manual operation, affecting the ecology and biodiversity of the river.

Method used

A multifunctional river water-retaining weir structure is designed, including a water-retaining weir module, a force-relieving pond and a fish channel module set along the direction of the water flow. The water-retaining weir module and a fish channel module have built-in buoyancy pools, which automatically adjusts through the water level rise and fall of the buoyancy pool to avoid manual operation.

Benefits of technology

The automatic lifting and lowering of the weir barrage is realized without manual control and power consumption, reducing labor costs, protecting the river ecology, and taking into account flood control, ecological and landscape functions.

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Abstract

The multifunctional river water retention weir structure comprises a water retention weir module, a fishway module and a stilling pool which are sequentially arranged in the water flowing direction, a water retention weir cabin body which ascends and descends along with the water level of a buoyancy pool in the water retention weir module is arranged in the water retention weir module, and a fishway cabin body which ascends and descends along with the water level of the buoyancy pool in the fishway module is arranged in the fishway module; inner cavities of the water retention weir cabin and the fishway cabin are communicated with a designed flood level of an upstream water channel through a cabin water inlet system; the inner cavities of the water retention weir cabin and the fishway cabin are communicated with the low elevation position of the downstream water channel through a cabin water outlet system; the novel landscape drop weir can automatically ascend and descend according to the water level condition, is provided with a river water retention weir structure with multiple functions, can create a good water landscape in a river channel, and has multiple functions of flood prevention, ecology and the like; the whole barrage system is subjected to balance control through buoyancy of water and gravity of the fishway cabin body, the water retention barrage cabin body and the gravity after water filling, ascending and descending of the barrage system are achieved, and manual control and electric energy consumption are not needed.
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