Slope instability model inversion device and inversion method

A technology of slope instability and inversion, applied in the direction of measuring device, using stable tension/pressure to test material strength, preparation of test samples, etc., can solve problems such as single function of model box

Active Publication Date: 2019-12-03
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solved the problem of single function of the existing model box

Method used

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  • Slope instability model inversion device and inversion method
  • Slope instability model inversion device and inversion method
  • Slope instability model inversion device and inversion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] In the model box, the diameter of the first circular hole 30 is 7mm, the center-to-center distance between the left and right first circular holes 30 is 52mm, and the center-to-center distance between the first and bottom first circular holes 30 is 160mm;

[0075] The diameter of the second round hole 32 is 5.3mm, the center distance between the second round holes 32 is 26mm, and the thread diameter of the second round hole 33 is 8mm.

[0076] The size of the upper base 15 of the bracket 4 is: length 175mm, width 110mm; the size of the lower base 22 is: length 230mm, width 100mm; The fixed knob with external thread, the diameter of the fixed knob 47 is 7mm; the contact end of the fixed knob and the inner tube is provided with an elastic rubber layer, which helps to increase the friction between the fixed knob and the inner tube, and the friction between the inner tube and the outer tube The position is effectively fixed.

[0077] The side wall 1 and the rear wall 2 of ...

Embodiment 2

[0090] The method for carrying out inversion test using described slope slope instability model, comprises the steps:

[0091] 1. Set the slope height to 300mm, fix the panel 3 and the rear wall 2 according to the required slope angle and the distance from the slope shoulder to the top of the slope, and then fill the soil layer by layer and compact it. Multiple earth pressure gauges 7 and pore water pressure gauges 8 are embedded at depths of 50mm, 100mm, and 150mm from the top of the slope. Among them, earth pressure gauges and pore water pressure gauges are evenly arranged at equal intervals.

[0092] The method of filling the soil in the model box 1 is as follows: divide the sand and soil into multiple parts, compact each layer into six layers with a thickness of 50 mm and put them into the model box 1 respectively. The specific method is: take 3 sand samples respectively to measure the water content, take the average value, and record the water content; then calculate the...

Embodiment 3

[0101] The method for carrying out inversion test using described slope slope instability model, comprises the steps:

[0102] Set the slope height to 1000mm, fix the panel 3 and the rear wall 2 according to the required slope angle and the distance from the slope shoulder to the top of the slope, and then fill the soil layer by layer and compact it. Earth pressure gauge 7 and pore water pressure gauge 8 are buried at depths of 150mm, 300mm, 500mm, and 650mm from the top of the slope. Among them, earth pressure gauges and pore water pressure gauges are evenly arranged at equal intervals.

[0103] The filling method of the filling soil in the model box 1 is as follows: divide the sand into several parts, and compact each layer into ten layers with a thickness of 100 mm and put them into the model box 1 respectively. The specific method is: take 3 sand samples respectively to measure the water content, take the average value, and record the water content; then calculate the wei...

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Abstract

The invention discloses a slope instability model inversion device and an inversion method. An acrylic panel of the device is connected with a wooden bottom plate through a hinge; the upper portion ofthe panel is hinged to the wooden bottom plate through a support; the panel can rotate around a hinge shaft through the scalability and rotatability of the support; a triangular support is arranged between the lower portion of a rear wall and the wooden bottom plate; the upper portion of the rear wall is hinged to the wooden bottom plate through the support; the rear wall can be moved by the scalability and rotatability of the support; a data acquisition display collects and displays a collected soil pressure and a pore water pressure; and the two side walls of toughened glass are marked withscale values in the vertical and horizontal directions and have an angle value taking a hinge shaft as a circle center. According to the device, the possible maximum slope forming angle and height offilling soil under different working conditions can be subjected to simulation analysis; the damage modes of a slope under different working conditions can be observed; the reference is provided forslope stability and engineering design; and the device is convenient in operation, high in visualization performance, and economical and practical.

Description

technical field [0001] The invention discloses a slope instability model inversion device and an inversion method, which belong to the technical field of geotechnical engineering. Background technique [0002] Unstable natural slopes and artificial slopes with too large designed slope angles often slide or collapse under the action of rock and soil gravity, water pressure, vibration force and other external forces. Large-scale slope rock and soil damage can cause traffic interruption, collapse of buildings, blockage of rivers, silting of reservoirs, and bring huge losses to people's lives and property. The common failure forms of slope instability include circular arc failure, plane failure, wedge failure and toppling failure. Therefore, predicting the failure time, scale, and degree of damage of slope instability is helpful to take preventive measures in advance, reduce geological disasters, and make the design of artificial slopes safe and economical. [0003] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/14G01N3/06G01N33/24G01N1/36G01N1/28
CPCG01N3/14G01N3/062G01N3/064G01N3/06G01N33/24G01N1/36G01N1/286G01N2203/0208G01N2203/0252G01N2203/0605G01N2203/0611G01N2203/0676G01N2203/0682
Inventor 董彦莉李明李铢张峰韩官骞郑锦崎
Owner ZHONGBEI UNIV
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