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A Calculation Method of Bed Flow Based on the Sediment Carrying Capacity of Water Flow

A flow calculation and bed building technology, applied in design optimization/simulation, instrumentation, electrical digital data processing, etc., to achieve the effect of strong practicability and easy collection

Active Publication Date: 2022-03-11
BUREAU OF HYDROLOGY CHANGJIANG WATER RESOURCES COMMISSION +1
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  • Summary
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  • Application Information

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Problems solved by technology

After the operation of large-scale reservoirs, the regulation of water flow and interception of sediment will lead to significant changes in the amount and process of water and sediment transport in the downstream river. many limitations under this new condition

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  • A Calculation Method of Bed Flow Based on the Sediment Carrying Capacity of Water Flow
  • A Calculation Method of Bed Flow Based on the Sediment Carrying Capacity of Water Flow
  • A Calculation Method of Bed Flow Based on the Sediment Carrying Capacity of Water Flow

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055] A method for calculating bed-forming flow in a downstream channel of a reservoir based on the sand-carrying capacity of water flow, comprising the following steps:

[0056] Step 1. Select a section with a clear beach channel pattern in a typical section of the alluvial plain river downstream of the reservoir. The implementation method is as follows:

[0057] Step 11, collect the channel shape and fixed section observation data of a certain section of th...

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Abstract

The present invention provides a kind of bed-making discharge calculation method based on the sand-carrying capacity of water flow, comprising the following steps: Step 1. Select a section with a clear beach channel pattern in a typical section of the alluvial plain river downstream of the reservoir; Step 2. Calculate the sand-carrying capacity of the typical section Force index S' * ; Step 3. Calculating the bed-making flow in a typical river section; Step 4. Checking the calculated value of the bed-making flow. This method fits the actual scouring and silting process of the downstream reaches of the reservoir. By analyzing the morphological characteristics of the river itself, starting from the basic principle of sand-carrying capacity of the river bed shaped by water flow, an appropriate method is adopted for different river reaches. At the same time, the calculated value can be By performing self-checking, it is easier and more accurate to calculate the bed-forming discharge of a certain period of time, and the data required by this method are easier to collect than the existing methods, and the practicability is stronger.

Description

technical field [0001] The invention relates to the technical field of water conservancy rivers, in particular to a method for calculating bed-forming flow in a downstream river of a reservoir based on the sand-carrying capacity of water flow. Background technique [0002] The bed-making flow refers to a certain kind of flow whose bed-making effect is equal to the multi-year flow process, and it should actually be a relatively large flood flow. The bed-making effect of water flow should take into account both energy and duration. Therefore, the bed-making flow is not equal to the maximum flood flow. The bed-making effect of the maximum flood flow is intense, but the duration is too short; it is not equal to the low-water flow. Although the dry water flow has a long action time, the flow is too small and the bed formation strength is limited. Bed-making flow rate is an important parameter reflecting the channel shape of alluvial rivers, and a key technical index to measure t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14
Inventor 朱玲玲许全喜任实袁晶刘亮董炳江李思璇杨成刚李圣伟
Owner BUREAU OF HYDROLOGY CHANGJIANG WATER RESOURCES COMMISSION