Method for determining channel forming discharge in river sink of tributary stream

A technology for determining method and flow rate, applied in construction, water conservancy engineering equipment, water conservancy engineering and other directions, can solve problems such as poor empirical operability, difficult to make bed flow quantitative calculation, increase the demand for beach topographic data, etc., to achieve universal The effect of strong sex, simple operation and clear physical meaning

Active Publication Date: 2017-11-28
WUHAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above indirect method increases the demand for data such as edge beach topography and water level along the way, which is highly empirical and poor in operability
Especially after the reservoir is built on the main stream, the water level adjustment of the main stream will change the erosion base level

Method used

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  • Method for determining channel forming discharge in river sink of tributary stream
  • Method for determining channel forming discharge in river sink of tributary stream
  • Method for determining channel forming discharge in river sink of tributary stream

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Embodiment Construction

[0042] The specific implementation of the method for determining the bed-forming flow rate of the tail section of the tributary involved in the present invention will be described in detail below in conjunction with the accompanying drawings.

[0043]

[0044] The hydrological data used in this embodiment are the hydrological observation data of the tail of a certain tributary flowing into the main river channel, and the hydrological data include the daily average flow rate, sediment delivery rate and water level observation data of the tail inlet control station (station A) within 30 years, and Observation data of the daily average water level at the main stream hydrological station (Station B) near the junction of main and tributary streams during the same period.

[0045] Such as figure 1 As shown, the method for determining the bed-making flow of the tail section of the tributary provided in this embodiment includes the following steps:

[0046] Step 1. Discrimination o...

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Abstract

The invention provides a method for determining the channel forming discharge in the river sink of the tributary stream, and takes hydrological and weather factors of the main stream and the tributary stream into consideration. The method is characterized by comprising the following steps: step 1, distinguishing the steady state of the incoming water and sediment of the tributary stream channel and determining the sediment transport rate index; step 2, performing interval partition on the flow rate data of the hydrometric station at the inlet of the river sink and the water level data of the hydrometric station at the outlet of the river sink; step 3, determining the gradient relation curve of the river sink of the tributary stream; and step 4, drawing a channel forming strength line in the inlet flow rate-outlet water level coordinate plane, and calculating the channel forming discharge by adopting a graphical method.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and water transport engineering, and in particular relates to a method for determining the bed-forming flow rate of the tail section of a tributary. technical background [0002] The bed-making flow refers to a certain flow level that is equivalent to the comprehensive bed-making effect of the multi-year flow process on the shaping of the alluvial river bed. Whether it is reasonable or not will directly affect the cost, effect and even success of river regulation. [0003] For a general single alluvial channel, the shape of the channel is mainly affected by the process of incoming water and sediment from the upstream, and the bed-forming flow rate can be calculated by combining the inlet water and sediment data of the river section with mature methods such as the "Makaveyev method". [0004] In the tail section of the tributary near the intersection of the main and tributary rivers, the...

Claims

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Application Information

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IPC IPC(8): E02B1/00
CPCE02B1/00
Inventor 孙昭华高浩然严鑫熊海滨
Owner WUHAN UNIV
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