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An estuary vein-shaped river network tidal boundary determination method

A method for determining leaf veins, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of no tidal boundary method for estuarine leaf vein-like river networks, and achieve obvious social, economic and environmental benefits.

Active Publication Date: 2021-08-27
FUJIAN PROVINCIAL INVESTIGATION DESIGN & RES INST OF WATER CONSERVANCY & HYDROPOWER
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Problems solved by technology

[0004] Retrieval of relevant materials including Chinese patents shows that there is no relevant report on the tidal boundary method of estuary vein-shaped river network at home and abroad

Method used

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  • An estuary vein-shaped river network tidal boundary determination method
  • An estuary vein-shaped river network tidal boundary determination method
  • An estuary vein-shaped river network tidal boundary determination method

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Embodiment 1

[0048] Step 1: Investigate and collect the plane distribution of the river network and the geometric characteristics of the river, and determine the weighted slope of the main stream, the weighted river width, the weighted slope of the tributaries, and the weighted river width

[0049] According to the geometric characteristics of the 25 measured cross-sections of the South Datang Drainage Channel of the main stream, the 10 measured cross-sections of the tributary 1 Houshanxi, the 8 measured cross-sections of the tributary 2 Guxixi, and the 8 measured cross-sections of the tributary 3 Hougangxi, see Table 1-4. According to formula (1), calculate the weighted gradient RS of the main stream Nandatang drainage channel ms =0.046818, calculate the weighted river width RB of main stream according to formula (2) ms =17.701m, according to formula (3) to calculate the weighted slope RS of mountain stream after tributary 1 b (1)=0.17162, the tributary Guxixi 2 weighted gradient RS b ...

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Abstract

The invention discloses an estuary vein-shaped river network tidal boundary determination method. The estuary vein-shaped river network tidal boundary determination method comprises the following four parts: 1, investigating and collecting river network plane distribution and river geometric characteristics, and determining a river network main stream weighted slope, a weighted river width, a branch weighted slope and a weighted river width; 2, determining a main stream river width influence factor, a slope influence factor, a maximum tidal range of an entrance, a main stream tidal current boundary and a tidal zone boundary; 3, determining a main stream and branch stream intersection section and branch stream entrance section tidal range conversion; and 4, determining a river width influence factor, a slope influence factor, a tidal current boundary and a tidal region boundary of each branch. The determination of the estuary vein-shaped river network tidal boundary can determine the maximum influence range of the tidal current in the main stream and the branch stream, and provides technical support for later scientific treatment.

Description

technical field [0001] The invention relates to the fields of hydraulics and river dynamics, in particular to a method for determining the tidal boundary of a vein-shaped river network in an estuary. Background technique [0002] An estuary generally refers to the section of a river that empties into the ocean. Estuaries entering the sea are the product of the interaction between ocean processes and river processes, and are the result of complex interactions between ocean dynamics and river hydrodynamics. There are many rivers in China, among which the drainage area is 100km 2 There are more than 50,000 rivers, and due to differences in hydrology, geology and formation processes, more than 1,800 estuaries of different sizes and shapes have been formed. The tidal range of estuaries in different regions varies greatly. The Qiantang River in my country is a typical strong tidal estuary with a tidal range as high as 8.93m. The tidal range is 2.6m, and the average tidal range i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F119/14
CPCG06F30/13G06F2119/14
Inventor 杨首龙梁越何文兴陈文群王乐乐王星莉何承农付开雄
Owner FUJIAN PROVINCIAL INVESTIGATION DESIGN & RES INST OF WATER CONSERVANCY & HYDROPOWER
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