Centrifugal model test simulation method and system for barrier dam

A centrifugal model test and simulation system technology, applied in the field of centrifugal model test simulation of barrier dams, can solve problems such as complex material properties, unevenly distributed pore structure, uneven large deformation, etc., and achieve low test cost and wide application range , control simple effects

Active Publication Date: 2020-01-21
TSINGHUA UNIV
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Problems solved by technology

Due to the complex material properties of barrier dams, there are often unevenly distributed pore structures during the formation process, resulting in uneven large deformations
At present, there is no centrifugal mode

Method used

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  • Centrifugal model test simulation method and system for barrier dam
  • Centrifugal model test simulation method and system for barrier dam
  • Centrifugal model test simulation method and system for barrier dam

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Embodiment Construction

[0025] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0026] The idea of ​​the present invention is to construct a simulated dam body with a certain grade of crushed stone and sand-soil mixed material, and randomly arrange potassium nitrate powder in it, and after the centrifugal acceleration is stabilized at the set value, pass water into the model box, Potassium nitrate powder is dissolved to form a non-uniformly distributed pore structure in the damming body, simulating the generation of non-uniform deformation.

[0027] refer to figure 1 , figure 2 , image 3 and Figure 4 , the simulation system of the present invention comprises a model box 1, a vertical permeable partition 2 is arranged in the model box 1 and the box is divided into two chambers, the side wall of one of the chambers has a water outlet, and in the chamber The indoor layout has a simulated damming body 3 mainly composed o...

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Abstract

A centrifugal model test simulation method for a barrier dam is characterized by simulating a barrier body by using a mixed material of gravel and sand in a model box, randomly arranging potassium nitrate powder in the model box, placing the model box in a basket of a centrifugal machine, injecting water into the model box after a centrifugal acceleration is stable at a set value, dissolving the potassium nitrate powder, forming a pore structure in uneven distribution in the barrier body, and simulating the generation of uneven deformation. The invention also provides a centrifugal model testsimulation system for the barrier dam. The centrifugal model test simulation method and the centrifugal model test simulation system of the invention aim at the characteristics that the barrier dam material has complex characteristics, and has unevenly distributed large pore structures and uneven deformation in the inner part, and realize simulation of the unevenly distributed pore structures of the barrier dam in a geotechnical centrifugal machine.

Description

technical field [0001] The invention belongs to the technical field of barrier dam model tests, in particular to a simulation method and system for a centrifugal model test of barrier dams. Background technique [0002] Barrier dams are often produced with geological disasters and are widely distributed in mountainous areas around the world. The existence of barrier dams poses a huge threat to the safety of people's lives and properties downstream, and if it is not handled properly, it will cause devastating disasters. The barrier dam is mainly composed of two types of structures, the "natural" barrier body formed by the landslide and the "artificial" anti-seepage body designed and built, and is significantly affected by the dam foundation and the reservoir bank slope. Barrier dams are located in a complex and changeable environment, and they also have functions such as water retention and flood discharge. Therefore, they experience frequent stress change processes, deforma...

Claims

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Application Information

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IPC IPC(8): G01N33/24E02B1/02
CPCE02B1/02G01N33/24
Inventor 赵艺颖张嘎孙伟王爱霞罗方悦
Owner TSINGHUA UNIV
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