Artificial river channel design method for enhancing tidal bore

A design method and technology of tidal surge, which is applied in the field of artificial river design and river type design to enhance tidal surge, can solve the problem that there is no effective method for man-made tidal surge, achieve the enhancement of tidal surge phenomenon, enhance tidal surge, and save The effect of design costs

Pending Publication Date: 2018-12-28
ZHEJIANG INST OF HYDRAULICS & ESTUARY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, there is no effective method on how to artificially create tidal surges through channel design

Method used

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  • Artificial river channel design method for enhancing tidal bore
  • Artificial river channel design method for enhancing tidal bore
  • Artificial river channel design method for enhancing tidal bore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] For a section of tidal channel with a river length of 200m:

[0061] 1) Determine the characteristic quantity of tidal surge, said characteristic quantity includes: tidal surge height, pre-tidal water depth, tidal current velocity;

[0062] According to the long-term observation results, the height of the tidal surge is greater than 2m, the pre-tidal water depth is not more than 2m, and the tidal current velocity is 3.5-4.5m;

[0063] The ratio of tide height to pre-tidal water depth is 0.96.

[0064] 2) Determine the geometric feature relationship between the entrance section and the tidal surge viewing area;

[0065] The ratio of the cross-sectional area of ​​the tidal bore appreciation area to the cross-sectional area of ​​the tidal bore entrance is between 1 / 3 and 1 / 4;

[0066] The water depth ratio of the tidal bore appreciation area to the tidal bore entrance section is between 1 / 1.2 and 1 / 2.4;

[0067] The ratio of the width of the river in the tidal surge app...

Embodiment 2

[0084] according to Figure 4 In the shape of the river channel, a full steel plate lining was made. Specifically, the steel plate lining includes the following parts:

[0085] Steel plate support piles are used to drive into the bottom of the river bed to fix the steel plates;

[0086] The bottom keel of the steel plate is used to maintain the shape of the bottom of the steel plate;

[0087] The bottom surface of the steel plate is used as the riverbed surface;

[0088] The left bank of the steel plate and the right bank of the steel plate are used as the riverbed on both banks;

[0089] During construction according to equation B x =100e -0.0046x , x is in units of meters, and the width is calculated according to the equation B x Cut the bottom surface of the steel plate and the bottom keel of the steel plate;

[0090] The minimum height of the left bank of the steel plate and the right bank of the steel plate is calculated according to the following formula

[0091] ...

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PUM

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Abstract

The invention discloses an artificial river channel design method for enhancing tidal bore, and belongs to the field of the river regulation engineering. The method comprises three steps of determining a tidal bore characteristic quantity, determining a geometrical characteristic relation of a tidal bore entrance section and a tidal bore appreciation area section, and determining a shrinking percentage of a river channel along a tide direction. The provided artificial river channel design method for enhancing the tidal bore is used for designing a river channel body form of a tidal reach, andapparently enhancing a tidal bore phenomenon in the river channel. The method is capable of saving design cost, and reducing construction difficulty.

Description

technical field [0001] The invention relates to a design method of a river channel type, in particular to an artificial river channel design method for enhancing tidal surge, and belongs to the field of river control engineering. Background technique [0002] Tidal surge is a special hydrodynamic phenomenon that exists in estuaries under certain conditions. There are sudden changes in water level and flow velocity (flow) before and after tidal surge. After the tidal surge, the water level rises sharply, and at the same time, the flow velocity changes from ebb tide to high tide, and the flow velocity reaches the extreme value within a few minutes to tens of minutes. There are about 450 estuaries with tidal surges in the world, but there are only more than 10 estuaries that are worthy of appreciation. Among them, the tidal surges of the Qiantang River and the Amazon River in Brazil are the most spectacular. [0003] There are generally two conditions for estuaries with tidal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/02E02B1/00
CPCE02B3/02E02B1/00
Inventor 潘存鸿潘冬子曾剑郑君
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY
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