Test simulation system and test simulation method for reservoir sand peak scheduling

Abstract

The invention discloses a test simulation system for reservoir sand peak scheduling. The test simulation system comprises a flow control module, a sediment supply module, a water and sediment test module and a discharged sediment collection module, wherein the flow control module is used for customizing a session flood process meeting test requirements; the sediment supply module can be used for configuring sediment carrying water flow meeting test requirements, so that fine simulation of water-sediment asynchronization is realized; the water and sand test module is used for carrying out a reservoir area sand peak scheduling test; the discharged sand collection module is used for water-sand separation and water-sand recovery; in addition, the invention further discloses a corresponding test method, the water and sediment transportation conditions of the reservoir in different dispatching modes can be simulated, refined simulation of reservoir sediment peak dispatching is achieved, and technical support is provided for keeping the effective storage capacity of the reservoir for a long time.

Description

technical field [0001] The invention relates to a test simulation system and a test simulation method for reservoir sand peak scheduling, and belongs to the field of water conservancy engineering. Background technique [0002] Large-scale water conservancy and hydropower projects have multiple functions such as flood control, power generation, shipping, and water resource allocation. However, water conservancy projects will change the upstream and downstream water and sediment conditions, causing problems such as sedimentation in the reservoir area and changes in the ecological environment. Due to sedimentation, the capacity of reservoirs around the world is decreasing year by year, which seriously restricts the sustainable development of water conservancy and hydropower projects. Especially for river-type reservoirs with significant impacts, there are more significant differences in the propagation of flood peaks and sand peaks in the reservoir area. Asynchronous characteri...

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Problems solved by technology

[0003] On-site observation and numerical simulation are commonly used means to study water and sediment movement. Due to the constraints of factors such as water depth in front of the dam, dam operation, and wading structures (such as approach channels), on-site observation is difficult, expensive, and low in safety; numerical simulation The working conditions of high water depth and long river reach have higher requirements on computer performance, and it is expensive and difficult to carry out long-sequence water and sediment simulation

Patent CN103711101A proposes a deformable open channel curved water tank device for water flow and sediment testing, which can easily change the shape of the curve, adjust the parameters of the water tank arbitrarily, and improve the test conditions for local water and sand problems in the curve, but the structure of the device is single, Less pertinent, unable to meet the asynchronous inflow conditions of water and sediment, and unable to meet the requirements of simulation of sand peak dispatching process and supporting measurement of water and sediment

[0004] It is an effective way to solve the sediment problem of the reservoir to accurately understand the characteristics of the sediment entering the reservoir. In view of the shortcomings of the existing river-type reservoir test simulation technology, the present invention establishes a test simulation system and test simulation method for reservoir sand peak scheduling. It can be used to simulate the water and sediment transport process of different sediment control methods in river-type reservoirs, overcome the difficult problem of separating the flood peak and sand peak, realize the refined simulation of reservoir sand peak regulation, and provide simulation means for the regulation of sediment discharge in river-type reservoirs. It provides a theoretical basis for sand peak scheduling to ensure that the reservoir can maintain effective storage capacity for a long time

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