Centrifugal model test simulation method and system for barrier dam

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...

AI Technical Summary

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.

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