Model test system for simulating soil slope collapse process

A model test, soil slope technology, applied in simulators, soil material testing, simulation devices for space navigation conditions, etc., can solve the problems of test failure, difficult to realize the control of sliding soil and slope water content, etc.

Active Publication Date: 2020-07-31
BEIJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult to control the water content of slip zone soil and slope body
In general, the shallow damage in the rainfall test occurs earlier than the designed landslide, which leads to the failure of the test.

Method used

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  • Model test system for simulating soil slope collapse process
  • Model test system for simulating soil slope collapse process
  • Model test system for simulating soil slope collapse process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides a model test system for simulating the process of soil slope landslides, including: a model box loaded with similar materials, a sliding bed structure, a sliding belt structure, a sliding body structure, a collapse structure, a rainfall system, a control system, and a monitoring system . The bottom surface of the model box and the left and right sides are all made of 8mm steel plates, and the front and rear sides are made of 10mm thick tempered glass to facilitate observation of the landslide process. A small hole with a diameter of 1cm is drilled on the back tempered glass along the sliding surface.

[0034] The sliding bed structure includes the sliding bed simulation material and the overlying material of the slope toe platform. The sliding bed simulation material is formed by layering and tamping the sliding bed material on the site of the landslide body. The layer thickness is 20cm, and each layer exceeds the sliding bed circle. The shape of ...

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Abstract

The invention discloses a model test system for simulating a soil slope collapse process. The system comprises a model box, a sliding bed structure, a sliding belt structure, a sliding body structure,a collapse structure, a rainfall system, a control system and a monitoring system. The friction coefficient of the sliding belt is adjusted, segmented sliding control over the sliding belt is furtherachieved. A slope crack is simulated through the characteristics of moisture absorption, expansion and contraction of a moisture-sensitive material between sliding body soil strips, a collapsed bodytension crack is simulated through inflation and deflation of reserved air bags between collapsed soil strips, and the monitoring system uses a non-contact technology to obtain the change rule of a displacement field and a speed field of a soil body in the landslide process. Compared with the prior art, the model test system for simulating the soil slope collapse process provided by the inventioncan simulate the whole process of common landslide and collapse of the soil slope, and can also simulate the instability process of rainfall-type landslide.

Description

technical field [0001] The invention relates to the technical field of landslide disaster model tests, in particular to a model test system for simulating the landslide process of soil slopes. Background technique [0002] Landslide is a kind of extremely harmful natural disaster, and this field has been one of the important research directions of scholars from all over the world for a long time. As a special engineering geological hazard, loess landslides have different characteristics from rocky slopes and soil-rock dual slopes due to the unique water sensitivity of soil slopes. [0003] Relevant scholars at home and abroad have mostly studied the mechanism of landslides based on perceptual knowledge of the whole process of landslide gestation, start-up, occurrence and development, and then abstracted the whole process of landslides into mathematical models or mechanical models by using theoretical analysis methods, numerical simulation methods, and on-site monitoring meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G09B9/00
CPCG01N33/24G09B9/00
Inventor 孙志杰孔繁盛赵紫阳王闫超张必昌熊威郝耀虎员康锋陈毅宋杰李华
Owner BEIJING UNIV OF TECH
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