Water gate dipper type shunting energy dissipating rushing-proof technology

Abstract

The invention discloses a novel sluice bucket type flow-dividing and energy-dissipation scour prevention technology. The technology comprises five parts, i.e., the overall design thought, the type selection of a section simulating hydraulic model, the verification of an integral simulating hydraulic model, the observation of an original model, and the comparison of economic technology, and the like. The design of the invention has eight most important key parts, i.e., the frontal edge width B1 of a pier, the top width B2 of a tail end, the bottom width B3 of the tail end, the inverted arc radius R of the upstream face of the pier, the flip shot angle Theta, the pier height P, the number of the pier, and the top space B4 between the tail ends of the piers, and the like. The design method of the sluice bucket type flow-dividing and energy-dissipation scour prevention technology is divided into two major parts, i.e., the body form design and the distribution of the piers. The bucket type flow-dividing pier designed in the way is characterized by low downstream water level, high energy consumption rate in ordinary flow flood discharging working condition, small stilling pool depth, short pool length, less workamount, low investment, and the like.

Description

technical field [0001] The invention relates to a design method of hydraulic energy dissipation, a key technology in the design of water conservancy and hydropower sluices. Specifically, it is a new sluice bucket type diversion energy dissipation and anti-scouring technology. technical background [0002] The sluice is one of the most important structures in dam construction. It has the dual functions of retaining water and releasing water. The functions of the sluice include flood control, irrigation, power generation, water supply, shipping and so on. Therefore, in addition to being safe and reasonable in structure, it must also have good hydraulic characteristics. The sluice-type diversion energy dissipation and anti-scour technology belongs to the category of new technology for flood discharge and energy dissipation of dams in water conservancy and hydropower projects, and the content involves the most important buildings in dam construction. Flood discharge and energy ...

AI Technical Summary

Problems solved by technology

It has been used in stilling ponds of a number of water conservancy projects such as Hexi Power Station in Hunan, Taoshan Reservoir in Heilongjiang, Shahezi Reservoir in Jilin, Wudao Reservoir, Donglin Reservoir, Liuyang Reservoir, Xiaoshihe Reservoir, etc. However, there are still the following deficiencies in the energy dissipation of the stilling bucket and the energy dissipation of the stilling pier: for the energy dissipation of the stilling bucket, the bucket has a high requirement for the downstream water depth, and the change of the flow state is very sensitive to the change of the water depth. Most of the flow states cannot reach the ideal state; as for the energy dissipation of the stilling pier, because the pier body is directly impacted by the water flow, although the body shape has been improved several times, the stress conditions and anti-cavitation ability are not satisfactory

[0004] Retrieval of relevant materials including Chinese patents shows that there are no application examples and related reports of sluice-type shunt flow energy dissipation and anti-scour technology at home and abroad

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