Device and method for landslide model test

Abstract

The invention discloses a device for a landslide model test. The device comprises a landslide model, a model box, a rainfall system, a water supply system, a water recovery system, a reservoir water level rising and falling system, a landslide model external data acquisition device and a landslide model internal data acquisition device, wherein the rainfall system, the water supply system, the reservoir water level rising and falling system, the landslide model external data acquisition device and the landslide model internal data acquisition device are connected with an integrated control platform; the rainfall system is arranged above the model box; the water supply system is arranged above the rainfall system; the water recovery system is arranged under the model box; the water recovery system is connected with the water supply system through a water supply pipe; the reservoir water level rising and falling system is arranged on the lateral side of the model box and is communicated with the model box through a water supply and drainage hole with a filter net. The invention also provides a method for the landslide model test. The device can be used for simulating and realizing the water level change and rainfall intensity within a short period of time; the device can be comprehensively automatically controlled; the precision of the device for the landslide model test can be increased; the method is simple and can be used for increasing the efficiency of the landslide model test.

Description

technical field [0001] The invention belongs to the field of geological disaster model tests, in particular to a device and method for landslide model tests. Background technique [0002] Landslides are a major geological disaster next to earthquakes. Scholars at home and abroad use different methods to study landslides, and landslide model tests are an important technical means to study the deformation process and mechanism of landslides. This is because the landslide model test can not only visually observe the movement characteristics of the landslide during the sliding process, but also quantitatively obtain the landslide’s stress, strain, displacement and other parameters, which can clarify the mechanism of landslide breeding from qualitative and quantitative perspectives. [0003] Through long-term research on landslide geological hazards by domestic and foreign scholars, it is found that most landslides are caused by changes in water levels or rainfall. The reasons a...

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Problems solved by technology

But all there is limitation or defect to a certain degree in existing landslide model test device:

[0005] (1) The existing equipment for landslide model tests is not highly automated, and requires testers to continuously regulate rainfall intensity and reservoir water level replenishment and drainage. The workload is heavy, and rainfall intensity and water level are difficult to accurately control. It is impossible to realize the dynamics of rainfall and reservoir water level Joint control; multiple systems such as the rainfall system, reservoir water level elevation system, water supply system, and data acquisition system do not adopt integrated control, and the operation is cumbersome and inefficient;

[0006] (2) Since the test process of simulating indoor rainfall and reservoir water fluctuations takes a long time, a large amount of replenishment and drainage must be required for experiments. The water used in the existing landslide model test devices is not rationally designed and utilized, which not only occupies the site, but also causes water damage. waste of resources;

[0007] (3) The monitoring equipment of the existing landslide model test device has low precision and low efficiency; it cannot accurately display the multi-field evolution characteristics of the stress field, temperature field, and displacement field during the landslide deformation process;

[0008] (4) The landslide model test with the existing landslide model test device is not only time-consuming, but also the accuracy is not high, and the test device does not consider the optimization of the structural design while realizing its own functions

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