Centrifugal model test device for debris flow toughness protection structure

Abstract

The invention relates to a centrifugal model test device for a debris flow toughness protection structure. The device comprises a bottom plate which is disposed in a centrifugal machine chamber, a model box, a sliding surface, a flexible blocking structure and a camera, wherein one side of the model box is a transparent surface, the model box is arranged on the bottom plate, and the interior of the model box is used for simulating the debris flow blocking structure interaction process; the sliding surface is arranged at the bottom in the model box and comprises an inclined section and a horizontal section; the flexible blocking structure is arranged at the tail end of the sliding surface in the model box and is connected with the sliding surface; the camera is fixed to the bottom plate through a camera support, a lens of the camera faces the transparent face of the model box, and the camera support can support position adjustment of the camera in the horizontal direction and the vertical direction. Compared with the prior art, the device is suitable for a supergravity centrifugal test platform, the interaction mechanism of debris flow and the flexible blocking structure can be researched under a prototype stress field, the scale effect problem is solved, and a scientific basis is provided for structural design.

Description

technical field [0001] The invention relates to the field of engineering geology, in particular to a centrifugal model test device for a mud-rock flow ductile protection structure. Background technique [0002] The impact of strong continental earthquakes on surface geological processes is far-reaching. In the strong earthquake disturbance area, that is, the area affected by near-field and far-field seismic activities, supergene geological hazards can maintain a high level of activity for a long period of time and cause huge losses. For example, in the 2008 Wenchuan Earthquake, on the one hand, a large number of landslides and collapses triggered by the co-seismic provided a rich source for the breeding of post-shock debris flows; on the other hand, under the strong earthquake disturbance, the slope was cracked and loosened , forming a large number of unstable slopes. Therefore, under extreme weather conditions, debris flow disasters are very easy to form, such as Wenjiago...

AI Technical Summary

Problems solved by technology

[0004] (1) Debris flow impact tests on flexible structures based on the prototype scale, the test cost is very huge;

[0005] (2) Based on small and medium-scale tests, it is difficult to preserve the deformation characteristics of flexible structures well, and due to the scale effect, it is difficult to effectively simulate the rheological characteristics of debris flow

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