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Slope instability physical model test device under joint action of rainfall and traffic vibration

A technology of slope instability and joint action, applied in the direction of soil material testing, material inspection products, etc., can solve problems such as uneven slopes and unclear influence mechanisms of slope deformation and failure, and achieve simple operation, simple structure, and functional various effects

Pending Publication Date: 2018-02-09
SHIJIAZHUANG TIEDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are few studies on the mechanism of slope slip along the transportation infrastructure, especially the environmental vibration effect brought by high-speed and heavy-duty railways is not uniform in understanding whether it can induce slope instability and damage; long-term traffic vibration load The mechanism of influence on slope deformation and failure is still unclear, especially the mechanism of slope catastrophe under the coupling action of traffic load and other landslide-inducing factors (such as heavy rainfall, etc.) needs further in-depth research

Method used

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  • Slope instability physical model test device under joint action of rainfall and traffic vibration
  • Slope instability physical model test device under joint action of rainfall and traffic vibration

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Experimental program
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Effect test

Embodiment 1

[0029] like figure 1 As shown, the present invention provides a physical model test device for slope instability under the joint action of rainfall and traffic vibration, including a model test box 1 with an open top and one side, an artificial rainfall simulation unit 2 for providing rainfall, and an artificial rainfall simulation unit 2 for outputting traffic. The dynamic simulation unit 3 of the vibration load, the monitoring unit 4 and the control unit 5 for tracking the slope instability process, the artificial rainfall simulation unit 2 is located above the model test box 1, and the dynamic simulation unit 3 is located at the bottom of the model test box 1, The artificial rainfall simulation unit 2 , the power simulation unit 3 and the monitoring unit 4 are all electrically connected to the control unit 5 .

[0030] like figure 1 As shown, the model test box 1 includes a model frame 12 and a tempered glass plate installed on the model frame 12, the model frame 12 and th...

Embodiment 2

[0035] This embodiment is a simulation of slope instability and damage under interactive conditions (interaction between rainfall and traffic vibration), and the artificial rainfall simulation unit 2 and the dynamic simulation unit 3 are alternately turned on or off, and the control unit 3 controls the scissor structure adjustment model test box 1 side, thereby adjusting the angle of the slope of the rock and soil body 14, to simulate the situation of the slope angle change of the rock and soil body 14, the water content sensor 41 can obtain the water content change of the rock and soil body 14, the average seepage velocity, etc., The matrix suction sensor 42 can obtain the real-time matrix suction of the rock and soil body 14, the pore water pressure sensor 43 can obtain the real-time pressure change of the dynamic pore water inside the slope under the interaction of rainfall and traffic vibration load, the inclinometer 44 and the high-speed camera 47 can track the rock in real...

Embodiment 3

[0037] This embodiment is a simulation of slope instability and damage under coupling conditions (rainfall and traffic vibration act simultaneously), and the artificial rainfall simulation unit 2 and the dynamic simulation unit 3 are turned on at the same time, and the control unit 3 controls the scissor structure adjustment model test box at the same time 1 side, thereby adjusting the angle of the slope of the rock and soil body 14, to simulate the situation of the slope angle change of the rock and soil body 14, the water content sensor 41 can obtain the water content change of the rock and soil body 14, the average seepage velocity, etc., The matrix suction sensor 42 can obtain the real-time matrix suction of the rock and soil body 14, the pore water pressure sensor 43 can obtain the real-time pressure change of the dynamic pore water inside the slope under the coupled action of rainfall and traffic vibration load, the inclinometer 44 and the high-speed camera 47 can track th...

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Abstract

The invention relates to a slope instability physical model test device under joint action of rainfall and traffic vibration. The device comprises a model test box with openings in the top and one side, an artificial rainfall simulation unit for providing rainfall, a kinematic simulation unit for outputting a traffic vibration load, a monitoring unit for tracking a slope instability process, and acontrol unit, wherein the artificial rainfall simulation unit is located above the model test box; the kinematic simulation unit is located at the bottom of the model text box; the artificial rainfall simulation unit, the kinematic simulation unit and the monitoring unit are all electrically connected with the control unit. The device can simulate a slope instability evolution rule under single action, mutual action and coupled action of the rainfall and the traffic vibration, and also can carry out a synchronous comparison test on slope instability evolution through multiple combinations. The slope instability physical model test device has the beneficial effects of simple structure, simplicity and convenience in operation and multifunctionality, and provides a certain guidance effect for pre-warning of landslide hazards and prevention and treatment of projects.

Description

technical field [0001] The invention relates to the field of geological disaster model tests, in particular to a physical model test device for slope instability under the joint action of rainfall and traffic vibration. Background technique [0002] Among all kinds of natural disasters in our country, landslides have become the second largest geological disaster after earthquakes. With the gradual deepening of traffic infrastructure construction in difficult mountainous areas and special areas in our country, more and more cutting slopes will appear. Due to the complex geological environment around the transportation infrastructure in mountainous areas, geological disasters such as landslides and debris flows occur from time to time, which have become the main hidden dangers affecting the safe operation of transportation lines. [0003] There have been some achievements in the mechanism of landslide occurrence and development through physical model tests at home and abroad,...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 赵维刚李峰杜彦良常江芳杜博文杨勇许红彬王青友
Owner SHIJIAZHUANG TIEDAO UNIV
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