Deflecting flow surface parameter design method for tidal flow reversal of steep slope seawall

A technology of tidal current reversal and parameter design, applied in design optimization/simulation, calculation, water conservancy engineering equipment, etc., can solve problems such as the inability to economically and effectively realize tidal current reversal, so as to enhance engineering safety and tidal observation safety. Effect

Active Publication Date: 2017-07-25
ZHEJIANG INST OF HYDRAULICS & ESTUARY +1
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Problems solved by technology

But for tidal currents, neither of the above two methods can economically and effectively realize the organic combination of tide reversal and tidal height creation

Method used

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  • Deflecting flow surface parameter design method for tidal flow reversal of steep slope seawall
  • Deflecting flow surface parameter design method for tidal flow reversal of steep slope seawall
  • Deflecting flow surface parameter design method for tidal flow reversal of steep slope seawall

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention is not limited thereto.

[0034] The deflecting surface in the present invention is generally composed of a circular arc segment and a deflecting segment. When the water level is low, a diversion segment combining "downstream segment and / or slope segment" can be added at the lower end. The present invention can not only effectively realize the tide reversal, but also effectively create and maintain the tidal surge landscape parameter design method, including the following steps:

[0035] (1) The overall layout design of the deflecting surface of the seawall: mainly based on the basic information such as the height, inclination angle, elevation and width of the suppression layer of the steep-walled seawall, as well as the characteristic parameters such as the tidal flat surface at the foot of the pond, the slope, the water depth of...

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Abstract

The invention relates to a deflecting flow surface parameter design method for tidal flow reversal of a steep slope seawall. The method comprises the following steps of (1) designing an overall layout of a deflecting flow surface of the seawall; (2) designing a diversion section; (3) designing an arc section; and (4) designing parameters of a deflecting flow section: analyzing and determining the length Lt of the deflecting flow section, a deflecting flow angle theta and the position of a starting point of the deflecting flow section. The parameters of the deflecting flow section can be analyzed and preliminarily selected by applying a simplified formula firstly and then are determined by applying SPH numerical simulation. The simplified calculation formula is defined in the specification. The method is a deflecting flow surface parameter design method based on a combination of the arc section and the deflecting flow section of the steep slope seawall; and basic theoretical support and calculation methods are provided for effectively solving the difficult problems of tidal watching safety and tidal bore landscape maintenance of the steep slope seawall.

Description

technical field [0001] The invention relates to a method for designing deflection surface parameters for steep-wall seawall tide reversal, and belongs to the technical field of disaster prevention and reduction in water conservancy projects. Background technique [0002] Current reversal is a method for indirect energy dissipation and scour prevention of steep-walled seawalls. As far as the mechanism is concerned, the current energy dissipation and anti-scour methods of steep-walled seawalls can be divided into two types: direct and indirect. The direct energy dissipation and anti-scour method of the seawall is mainly to directly reduce the tidal wave energy by setting special-shaped concrete blocks in front of the pond or building submerged dikes and other components or structures, or frame structures, so as to control or reduce the height of over-waves, so as to realize seawall The effect of energy dissipation and anti-scour; the indirect energy dissipation and anti-scour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50E02B1/00
CPCE02B1/00G06F30/20
Inventor 陈秀良倪兴也潘存鸿吴辉李倩李春贵骆勇军
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY
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