Slip zone similar material of landslide physical model, and preparation method thereof

A landslide physical model and similar material technology, applied in the field of similar materials for simulating sliding belts and their preparation, to achieve the effect of reducing the amount of tasks, good similarity, and high efficiency

Inactive Publication Date: 2014-04-02
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] The purpose of the present invention is to develop for the needs of landslide physical model tests, to overcome the limitations of the above-mentioned various model similar mate

Method used

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  • Slip zone similar material of landslide physical model, and preparation method thereof
  • Slip zone similar material of landslide physical model, and preparation method thereof
  • Slip zone similar material of landslide physical model, and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0038] Example 1:

[0039] In this embodiment, the proportion of similar materials in the sliding zone of the physical model of the Hualienshu landslide in the Three Gorges reservoir area is taken as an example for illustration.

[0040]Based on the geological data of the Hualienshu landslide, the physical and mechanical parameters of the sliding zone soil were obtained, and combined with the actual design of the model test, the geometric similarity ratio n of the model test was determined to be 185. The physical and mechanical parameters of the Hualienshu landslide slide zone prototype material and similar materials are obtained as shown in Table 1.

[0041]

[0042] Table 1

[0043] According to the mechanical parameters of similar materials for the sliding belt required by the Hualienshu landslide, since the required range of internal friction angle is 10.0-15.5, it can be seen that the ratio of large and small glass beads can be selected. According to the glass bead r...

Example Embodiment

[0047] Example 2:

[0048] In this embodiment, the proportion of similar materials in the sliding zone of the physical model of the Shengjibao landslide in the Three Gorges reservoir area is taken as an example to illustrate.

[0049] According to the geological data of the Shengjibao landslide, the physical and mechanical parameters of the sliding zone soil were obtained, and combined with the actual situation of the model test design, the geometric similarity ratio of the model test was determined to be 150; the physical and mechanical parameters of the prototype material and similar materials of the Shengjibao landslide sliding zone were obtained See Table 3.

[0050]

[0051] table 3

[0052] According to the mechanical parameters of similar materials for the sliding belt required by the Shengjibao landslide, since the required range of internal friction angle is 10.0-12.5, it can be seen that the ratio of large and small glass beads can be selected. According to the ...

Example Embodiment

[0056] Example 3:

[0057] In this embodiment, the proportion of similar materials in the sliding zone of the physical model of the Baijiabao landslide in the Three Gorges reservoir area is taken as an example to illustrate.

[0058] According to the geological data of Baijiabao landslide, the physical and mechanical parameters of the sliding zone soil are obtained, and combined with the actual situation of the model test design, the geometric similarity ratio of the model test is determined to be 100. The physical and mechanical parameters of the sliding zone prototype material and similar materials are obtained as follows, in which Table 5 shows the target values ​​of the physical and mechanical parameters of the shallow sliding zone prototype material and similar materials in the Baijiabao landslide, and Table 6 shows the physical and mechanical parameters of the Baijiabao landslide deep sliding zone prototype material and similar materials. The target value of the physical...

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Abstract

The invention discloses a slip zone similar material of landslide physical model, and a preparation method thereof. The slip zone similar is prepared from a raw material of glass beads in different sizes, or, raw material of glass beads and river sand, a proper ratio is determined according to actual to-be-simulated landslide-slip zone prototype, a satisfactory slip zone similar material can be simulated, and the slip zone similar material satisfies that cohesive force and internal friction angle are similar as that of real slip zone. For the slip zone similar material provided by the invention, cohesive force can be conveniently regulated to be 0 by regulating volume of addition of the glass beads in different sizes and the sand river, and the internal friction angle can vary in a larger range, so that experiment needs of different landslide physical models can be satisfied. Moreover, the similar material has the advantages of abundant raw material source, simple preparation method, steady mechanical property, low cost, harmlessness to human body, and so on.

Description

technical field [0001] The invention belongs to the technical field of materials for geomechanical model tests and their preparation, and in particular relates to a similar material used for simulating sliding zones in landslide physical models and a preparation method thereof. Background technique [0002] A landslide is a rock-soil mass attached to its inherent or potential weak structural surface / belt, which loses its original equilibrium conditions under the trigger of comprehensive factors such as rainfall and human production activities, resulting in a sliding phenomenon dominated by horizontal displacement. Landslide disaster is one of the main geological disasters, which has become an environmental problem that cannot be ignored in human society, and its harm has become the second natural disaster after earthquakes. [0003] The model test is a test method that replaces the prototype with a model according to a certain geometric and physical relationship, and uses th...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 程圣国潘飞胡祥辉杨云华于志伟陈婷
Owner CHINA THREE GORGES UNIV
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