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A simulation method and system for a centrifugal model test of a 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 unevenly distributed pore structure, uneven large deformation, and complex material properties

Active Publication Date: 2021-04-27
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 model test simulation technology for barrier dams, and the important role of geotechnical centrifugal model test methods in the study of the deformation and failure characteristics of barrier dams cannot be well utilized.

Method used

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  • A simulation method and system for a centrifugal model test of a barrier dam
  • A simulation method and system for a centrifugal model test of a barrier dam
  • A simulation method and system for a centrifugal model test of a 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 method for simulating a centrifuge model test of a dam. In a model box, mixed materials of crushed stone and sand are used to simulate a dam body, and potassium nitrate powder is randomly arranged in it, and the model box is placed in a centrifuge hanging basket. After the acceleration is stabilized at the set value, water is injected into the model box to dissolve the potassium nitrate powder, and a non-uniformly distributed pore structure is formed in the dam body to simulate the generation of non-uniform deformation; the invention also provides a dam Centrifugal model test simulation system, the present invention aims at the characteristics of complex material properties of barrier dams, large pore structures with uneven distribution inside, and uneven deformation, and realizes the simulation of unevenly distributed pores of barrier dams in geotechnical centrifuges structure.

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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Patent Type & Authority Patents(China)
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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