A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bottom sill type component for eliminating aqueduct water level fluctuation
The invention belongs to the technical field of water conservancy engineering, and particularly relates to a bottom sill type component for eliminating aqueduct water level fluctuation. The bottom sill type component is simple in size and easy to construct, and can be used for performing construction transformation on an existing aqueduct. The bottom sill is arranged in front of an aqueduct outlet, the aqueduct water flow on the side with the bottom sill forms a hydraulic characteristic different from the aqueduct water flow on the other side without the bottom sill after passing through the bottom sill, and the flow velocity of the water flow on the side, with the bottom sill, of the aqueduct outlet is high, so that the Karman vortex streets behind the outlet are disordered, and a phenomenon of the Karman vortex streets in bilateral symmetry cannot occur, and a water level fluctuation phenomenon of the water flow in an aqueduct body is further reduced; the purpose of effectively improving the hydraulics condition of the water flow in the aqueduct body is achieved; and the water flow can stably flow into a downstream channel, so that safe operation of aqueduct engineering is protected.
本发明属于水利工程技术领域，具体涉及一种消除渡槽水位波动的底坎式构件，体型简单，易于施工，能对既有渡槽进行施工改造，通过将底坎设置在渡槽出口之前，设置有底坎一侧的渡槽水流在经过底坎之后会形成与另一侧未设置底坎的渡槽水流不同的水力特征，渡槽出口处有底坎一侧出口水流流速较大，导致出口后卡门涡街混乱，不再出现左右对称的卡门涡街现象，进而减小渡槽槽身内部水流的水位波动现象，从而达到有效改善渡槽槽身内部水流的水力学条件的目的，使水流能够平稳地流入下游渠道，从而保护渡槽工程的安全运行。
Bottom sill type component for eliminating aqueduct water level fluctuation
The invention belongs to the technical field of water conservancy engineering, and particularly relates to a bottom sill type component for eliminating aqueduct water level fluctuation. The bottom sill type component is simple in size and easy to construct, and can be used for performing construction transformation on an existing aqueduct. The bottom sill is arranged in front of an aqueduct outlet, the aqueduct water flow on the side with the bottom sill forms a hydraulic characteristic different from the aqueduct water flow on the other side without the bottom sill after passing through the bottom sill, and the flow velocity of the water flow on the side, with the bottom sill, of the aqueduct outlet is high, so that the Karman vortex streets behind the outlet are disordered, and a phenomenon of the Karman vortex streets in bilateral symmetry cannot occur, and a water level fluctuation phenomenon of the water flow in an aqueduct body is further reduced; the purpose of effectively improving the hydraulics condition of the water flow in the aqueduct body is achieved; and the water flow can stably flow into a downstream channel, so that safe operation of aqueduct engineering is protected.
本发明属于水利工程技术领域，具体涉及一种消除渡槽水位波动的底坎式构件，体型简单，易于施工，能对既有渡槽进行施工改造，通过将底坎设置在渡槽出口之前，设置有底坎一侧的渡槽水流在经过底坎之后会形成与另一侧未设置底坎的渡槽水流不同的水力特征，渡槽出口处有底坎一侧出口水流流速较大，导致出口后卡门涡街混乱，不再出现左右对称的卡门涡街现象，进而减小渡槽槽身内部水流的水位波动现象，从而达到有效改善渡槽槽身内部水流的水力学条件的目的，使水流能够平稳地流入下游渠道，从而保护渡槽工程的安全运行。
Bottom sill type component for eliminating aqueduct water level fluctuation
一种消除渡槽水位波动的底坎式构件
XU XINYONG (author)
2021-08-06
Patent
Electronic Resource
Chinese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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