Falling impact model test device and test method

Abstract

The invention discloses a falling impact model test device and test method. The falling impact model test device comprises a buffer box, a model box, a lifting system and an acceleration monitoring system. The buffer box is arranged below the model box and closely connected with the model box. The lifting system is connected above the model box to upward and downward move the model box. The acceleration monitoring system is arranged on the side surface of the model box to monitoring the acceleration and the time of the impact process after falling of the model box. The test steps mainly comprise impact time calibration, model establishing, system lifting and falling impact and data processing. The device is simple in structure, the reduced size model test of the rock and the soil and othermaterials can be performed by using the test device and the test method, the test cost is relatively low and the test step is easy and thus the test device and the test method can be widely used forthe field of various practical engineering projects and scientific researches related to the rock and soil mechanics.

Description

technical field [0001] The invention belongs to the technical field of rock and soil mechanics, and in particular relates to a drop impact model test device and a test method. Background technique [0002] In the study of rock and soil mechanics, various physical model tests are widely used to study the physical and mechanical properties of large-scale rock and soil in situ. In related technologies, the centrifuge model test method adopts the method of placing a proportionally reduced physical model in a high-speed rotating centrifuge, and according to the principle of equivalence between centrifugal force and gravity, the model is placed in the designed state of simulating the acceleration of gravity to carry out the test. When the 1 / n times reduced model is placed under the n times acceleration state, the stress-strain properties of the model and the prototype are the same as the failure mechanism, so that the characteristics of the prototype can be better simulated, which...

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Problems solved by technology

However, the inventors found that the scope of application of the centrifugal model test method and the test effect mainly depend on the scale and function of the centrifugal model device; and the lar

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