A Centrifugal Model Test Device for Debris Flow Tough Protective Structure

Abstract

The invention relates to a centrifugal model test device for a mud-rock flow toughness protection structure, comprising: a bottom plate arranged in a centrifuge chamber; a model box, one side of which is a transparent surface, arranged on the bottom plate, and its interior is used to simulate a mud-rock flow-blocking structure The interaction process; the sliding surface is arranged at the bottom of the model box, including the inclined section and the horizontal section; the flexible blocking structure is arranged at the end of the sliding surface in the model box and connected with the sliding surface; the camera, through the camera The bracket is fixed on the base plate, the lens of the camera faces the transparent surface of the model box, and the camera bracket can support the horizontal and vertical position adjustment of the camera. Compared with the prior art, the present invention is applicable to the high-gravity centrifugal test platform, and can realize the study of the interaction mechanism between the debris flow and the flexible retaining structure under the prototype stress field, solves the problem of scale effect, and provides scientific basis for the 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...

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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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