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Mainstream swing type wave oscillating mechanism based river type classifying method

A mainstream and pendulum-type technology, applied in water conservancy projects, special data processing applications, instruments, etc., can solve problems such as difficult river section division, affecting the effect of regulation, and too general river section regulation, to achieve improved results, simple division methods, and The effect of great promotion value

Active Publication Date: 2019-01-04
HUBEI PROVINCIAL WATER RESOURCES & HYDROPOWER PLANNING SURVEY & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that it is difficult to accurately divide the river section in the existing technology mentioned in the above background technology, which leads to the problem that the river section regulation is too general and affects the regulation effect, and provides a river section based on the mainstream pendulum wave oscillation mechanism type division method

Method used

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  • Mainstream swing type wave oscillating mechanism based river type classifying method
  • Mainstream swing type wave oscillating mechanism based river type classifying method
  • Mainstream swing type wave oscillating mechanism based river type classifying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] Example 1: Select the Jianli Channel and the Damazhou Channel in the Jingjiang River Section as the research section, take 4 typical actual deep-flow swing measurements, and statistically analyze the measured swing distance between each measurement, as well as the morphological damping coefficient, Flow inertia coefficient, and initial swing velocity, calculate and draw the oscillation curve along the main swing wave acceleration, such as figure 2 and 3 shown.

[0130] Such as figure 2 Shown is the variation of the main pendulum wave acceleration along the Jianli Channel. Usually, in a hydrological year, the flow rate changes in the pre-flood flood period and the post-flood flood period are the largest, ΔQ = 8700m 3 At the time of / s, the swing amplitude of the inlet mainstream, the flow inertia coefficient is the largest, and the change of the riverbed shape is the most dramatic. Due to the influence of the intense erosion and siltation of the river channel, the c...

Embodiment 2

[0135] Embodiment 2: Select the Chenglingji-Wuhan River Section Zhongzhou Bay Waterway and Wuqiao Waterway as the research section, take 4 typical actual deep water swing measurements, and statistically analyze the actual measurement swing distance between each measurement, As well as the form damping coefficient, flow inertia coefficient, and initial swing velocity, calculate and draw the oscillation curve along the main pendulum wave acceleration, as shown in Figure 5 and 7 shown.

[0136] Figure 5 It is the variation of the pendulum wave acceleration along the main channel of the Weizhou Bay channel. On the whole, the disturbance intensity of the mainstream import increases with the increase of flow variation range. When ΔQ=16400m 3 / s, the pendulum waves of the mainstream at all sections along the course oscillate, and there is an increasing trend from upstream to downstream, which is a non-barrier river section, and the maximum oscillation intensity is 7.27m / s 2 . ...

Embodiment 3

[0142] Example 3: Select the Zhongyangluo Waterway and Wuxue Waterway in the Wuhan-Hukou River Section as the research section, take 4 typical actual deep water swing measurements, and statistically analyze the measured swing distances between each measurement times, as well as the morphological damping coefficient , flow inertia coefficient, and initial swing velocity, calculate and draw the oscillation curve along the main swing wave acceleration, as shown in Figure 9 and 11 shown.

[0143] Such as Figure 9 Shown is the variation of the main pendulum wave acceleration along the Yangluo Channel. On the whole, the intensity of the inlet shock disturbance increases with the increase of flow. When ΔQ=39000m 3 / s, the oscillation amplitude of the pendulum-type wave acceleration in the middle and lower part of the river section is relatively large, and it tends to increase from the upstream to the downstream. 2 . As the flow rate changes and the inlet disturbance decreases...

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Abstract

The invention relates to the technical field of water conservancy projects, and specifically relates to a mainstream swing type wave oscillating mechanism based river type classifying method. The method is characterized in that the mainstream swing type wave spreading process in a riverbed medium is analyzed on the basis of rock mass power transmission swing type wave theory so as to obtain a riverbed power response model (seeing the description) in the mainstream swing type wave spreading process; a map of mainstream swing type wave acceleration evolution with distance of a researching riversection is drawn based on the abovementioned response model, and the river section is researched and analyzed based on the evolution map; if the mainstream swing type wave acceleration in the distancebelow an inlet in the evolution map oscillates, and the oscillating scape gradually extends from upstream to downstream, thus the researching river section can be determined as a non-barrier river section, otherwise, the researching river section is determined as a barrier river section. The river section river type classifying method is simple and efficient; different river sections can be rapidly accurately divided; theory foundation is conveniently supplied to river sections of different types in the river section treatment process; a proper treatment method is selected; and the river section treatment effect is improved.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a river type division method based on the oscillation mechanism of mainstream pendulum waves. Background technique [0002] River regime refers to the relative state of water flow and river bed during the river bed evolution process, including the position and direction of the river flow dynamic axis, and the distribution and change trend of river bed forms such as shorelines, deep grooves, and island beaches. The adjustment of the river regime in the middle and lower reaches of the Yangtze River often spreads and affects the longer downstream reaches. For example, in the middle and lower part of the 19th century, the Baishazhou section of the upper reaches of the Wuhan River reached Shenhong to the right, and through the pick-up of the Snake Mountain node on the right bank, Shenhong was biased towards the Wuqiao River. The left bank of the section enters th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B1/00G06F17/50
CPCE02B1/00G06F30/20
Inventor 由星莹唐金武杨云平
Owner HUBEI PROVINCIAL WATER RESOURCES & HYDROPOWER PLANNING SURVEY & DESIGN INST
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