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Centrifugal physical test model and test method for rainfall-induced ancient landslide reactivation

A physical test and model technology, applied in the field of geotechnical mechanics and engineering, can solve problems such as the understanding of the main controlling factors restricting the revival mechanism of ancient landslides, and achieve the effect of overcoming the particularity and difference of the sliding zone soil.

Pending Publication Date: 2021-04-23
INST OF GEOMECHANICS
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, there is no consistent conclusion on the seepage law of mixed deposits, which to some extent restricts the understanding of the revival mechanism and main controlling factors of ancient landslides.

Method used

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  • Centrifugal physical test model and test method for rainfall-induced ancient landslide reactivation
  • Centrifugal physical test model and test method for rainfall-induced ancient landslide reactivation

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Embodiment Construction

[0033] Attached below Figure 1-2 , the specific implementation of the present invention will be described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific implementation. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] A kind of centrifugal physical experiment model that rainfall induces ancient landslide revival provided by the invention comprises:

[0035] The geotechnical centrifuge model box 1 is provided with a transparent viewing window on one side;

[0036] The landslide model 2 is located in the geotechnical centrifuge model box 1, and the slope length direction of the landslide is consistent with the long side direction of the geotechnical centrifuge model box 1. The landslide model 2 includes a sliding bed 21, and the sliding...

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Abstract

The invention discloses a centrifugal physical test model and a test method for rainfall-induced ancient landslide reactivation, and belongs to the technical field of geotechnical mechanics and engineering. A plurality of pore water pressure sensors in the test model are uniformly distributed on the longitudinal section which is parallel to the long side of the geotechnical centrifuge model box and passes through the central axis of the geotechnical centrifuge model box; and the soil pressure sensors are arranged in three rows, the middle row is located on the straight line where the pore water pressure sensors are located and is close to the pore water pressure sensors, and the other two rows of soil pressure sensors are symmetrically arranged on the front side and the rear side of the straight line where the pore water pressure sensors are located respectively. The pore water pressure sensors and the soil pressure sensors are all arranged at the interface of a sliding body and a sliding belt of the landslide model. The invention further provides a test method adopting the test device, a landslide centrifugal physical model test method is adopted, a real gravity field is restored, and the influence of the crack and rainfall coupling effect on ancient landslide resurrection is analyzed.

Description

technical field [0001] The invention relates to the technical field of rock and soil mechanics and engineering, in particular to a centrifugal physical test model and a test method for revival of ancient landslides induced by rainfall. Background technique [0002] In the past ten years, the research on the cause and mechanism of ancient landslide revival has attracted more and more attention from scholars at home and abroad. It has been recognized that water is an important factor leading to the revival of ancient landslides, and the possibility of instability of landslides is usually calculated by rainfall intensity, but how water seeps into the interior of the slide body is often ignored. For ancient landslides composed of soil and stone mixed accumulation, the depth of uniform infiltration of rainfall from the slope surface is limited, and it is difficult to induce deep landslides. When cracks develop on the surface of the landslide, rainwater can infiltrate rapidly alo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 吴瑞安李楠张永双郭长宝杨志华任三绍李雪钟宁
Owner INST OF GEOMECHANICS
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