Adjustable underflow stilling basin

Abstract

The invention discloses a continuously adjustable stilling basin. The continuously adjustable stilling basin comprises a basin body, wherein side walls are arranged on two sides of the basin body and the water inlet is formed in one end of the basin body and a water outlet is formed in the other end of the basin body, and a steep slope section of which the slope can be adjusted, an apron of which the height and length can be adjusted and a riprap of which the length can be adjusted are in sequence arranged in the basin body along the water flow direction. The adjustable underflow stilling basin disclosed by the invention has simple principles, convenience in adjustment and capability of quickly and accurately finding the optimum size of the stilling basin, thereby being capable of saving the occupied time for modifying a model while a model test is carried out, and the adjustable underflow stilling basin is further applied to the model test of hydraulic structures, especially suitable for solving the problem of underflow energy dissipation to provide preconditions for shortening the design cycle of a water conservancy project.

Description

technical field [0001] The invention relates to a hydraulic model test device, in particular to an adjustable stilling pool for bottom flow energy dissipation. [0002] technical background [0003] Energy dissipation and anti-scouring is an important issue in the design of drainage structures in hydraulic projects, and it is directly related to the safety and economy of the project. There are three types of energy dissipation and anti-scour methods commonly used in engineering: bottom flow, surface flow and deflected flow. Different types of energy dissipation methods are suitable for different engineering conditions, such as hydrology, geology, topography, construction and operation management, etc. [0004] Bottom flow energy dissipation is a relatively mature energy dissipation method, and its main energy dissipation works are stilling basins, which are widely used in plain sluices. When the high-speed jet enters the stilling pool along the bottom of the sluice, it is su...

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Problems solved by technology

The extension of the test time will affect the timely submission of the design results, which in turn will affect the smooth progress of the project construction

[0008] At the same time, the energy dissipation and anti-shock test usually selects several groups of discrete values ​​for the test. Although an approximation method is also adopted in the test process to make the size of the stilling pool close to the optimal value, it is proved that it is difficult to achieve the goal of safety and economy.

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