Curve overflow weir structure of shoreside spillway

Abstract

The invention discloses a curve overflow weir structure of a shoreside spillway. The curve overflow weir structure comprises an overflow weir, an outside guide wall close to the shoreside and extending according to the terrain, and an inside guide wall close to the riverbed, wherein the axis of the overflow weir is an asymmetric curve; the inside guide wall is arranged by adopting arc lines; the weir body of the overflow weir is shifted to one side of the riverbed to increase the length of the overflow front of the weir body of the overflow weir; and when the flood is discharged, the flood passes the overflow weir and smoothly enters a discharge chute. The weir body is shifted to one side of the riverbed, and the discharge front of the weir body is longer than that of a traditional linearweir, so that the design flow of the discharge can be ensured, the problems of transverse flow and circulation flow caused by the side weir can also be avoided, and meanwhile the increasing of engineering quantity caused by the enlargement of spillway scale is avoided. The curve overflow weir structure simplifies the structural style of the overflow weir, reduces the construction difficulty of theoverflow weir, the engineering quantity and the engineering investment, and obtains good social and economic benefits.

Description

technical field [0001] The invention relates to a flood discharge facility in a water conservancy and hydropower project, in particular to a curved overflow weir structure of a shore spillway. Background technique [0002] Shore spillways in water conservancy and hydropower projects include overflow weirs, chute and energy dissipation facilities. Overflow weirs usually take the form of utility weirs, wide top weirs and hump weirs. The layout of the bank overflow channel usually adopts the front groove type and the side groove type. The axis of the trough of the positive trough spillway is orthogonal to the axis of the overflow weir, and the direction of the water flow over the weir is parallel to the axis of the trough; The flow coefficient of the positive weir is slightly larger, and the water flow conditions behind the weir are better; the phenomenon of circulation and bypassing is easy to occur behind the side weir, especially in the case of low weir and low head; The ...

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Problems solved by technology

The flow coefficient of the positive weir is slightly larger, and the water flow conditions behind the weir are better; the phenomenon of circumvention is easy to occur behind the side weir, especially for the low weir and low water head; the combination of the positive weir and the side weir, the stress concentration at the junction of the weir body, The structure of the weir body is complex, and the flow state behind the weir is disordered

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