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Movable collapse test device and system and test method

A test device and test system technology, which is applied in the field of rock tests, can solve the problems of expensive monitoring instruments, low density, single monitoring parameters, etc., and achieve the effect of strong early warning practicability, improved accuracy, and high reliability

Active Publication Date: 2021-04-02
BEIJING GEOLOGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the early warning and forecasting of landslide disasters is in its infancy. Due to the high price of monitoring instruments, there is no universal monitoring instrument at present. The research on disaster mechanism is not deep, there is no corresponding theoretical support, there are many problems such as the pertinence and practicability of monitoring technology and early warning methods
[0004]In addition, because there is no simulation test device specially used for collapse tests, the research on monitoring technology and early warning methods is slow

Method used

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  • Movable collapse test device and system and test method
  • Movable collapse test device and system and test method
  • Movable collapse test device and system and test method

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Such as Figure 1-3 As shown, the movable collapse test device provided in this embodiment includes, for example: a movable supporting structure for carrying a test piece, a detachable supporting structure, and an adjustable injection system.

[0054] Among them, the setting of the injection system is used to simulate the influence of different rainfall conditions on the rock mass in the natural environment. The spraying system is supported by a supporting structure, such as a bracket 2, so that the spraying part of the spraying system is located just above the test piece simulating a rock mass placed on a movable load-carrying structure, such as the bottom plate 1 .

[0055] The spray system includes a water inlet pipe 6 extending longitudinally and a water spray pipe 7 with a horizontal extension. One end of the water inlet pipe 6 is connected to a water source, and the other end is communicated with the water spray pipe 7 . The water source can be either an external w...

Embodiment 2

[0071] Embodiment 2 provides a movable collapse test system including the above-mentioned movable collapse test device. In addition to the above-mentioned device, the system also includes an optical fiber sensor and a moisture sensor placed in the weak interlayer of the test piece; and a monitor, the The monitor is connected in communication with the optical fiber sensor and the moisture sensor.

[0072] The following will describe in detail the test method based on the above-mentioned mobile collapse test system through examples.

Embodiment 3

[0074] An embodiment of the present invention provides a test method using the above-mentioned movable collapse test system, the method includes the following steps:

[0075] S100. Perform water immersion treatment on the first test piece, and obtain the instantaneous slip critical value c of the cohesion force of the weak interlayer of the first test piece and the internal friction angle 临 、ψ 临 ;

[0076] S200, simulate the test on the second test piece; the first test piece and the second test piece are the same test piece;

[0077] Inserting the optical fiber sensor and the moisture sensor into the weak interlayer of the second test piece, and placing them in the movable collapse test device;

[0078] Adjusting the movable collapse test device to simulate various natural conditions, and monitoring the parameters of the second test piece in real time by means of the optical fiber sensor and moisture sensor;

[0079] S300, according to the cohesion of the first test piece ...

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Abstract

The invention discloses a collapse test method based on a movable collapse test system. The movable collapse test system comprises an optical fiber sensor and a moisture sensor which are used for monitoring parameters of a test piece, a movable collapse test device used for simulating natural conditions of the test piece, and monitoring equipment connected with the optical fiber sensor and the moisture sensor. The method comprises the steps of S100, soaking a first test piece in water to obtain instantaneous slippage critical values c<critical> and psi<critical> of cohesive force and an internal friction angle of a weak interlayer of the first test piece; S200, carrying out a simulation test on the second test piece; and S300, constructing a collapse test model according to the instantaneous slippage critical values c<critical> and psi<critical> of the cohesive force and the internal friction angle of the first test piece and the monitored parameters of the second test piece under various natural conditions. The invention further relates to a movable collapse test device. The movable collapse test system is specially used for carrying out the collapse test, and the test method canmonitor multiple parameters at the same time, so that the accuracy of the monitoring technology and the early warning method is greatly improved, and the practicability is high.

Description

technical field [0001] The invention relates to the technical field of rock tests, in particular to a movable collapse test device, a system and a test method thereof. Background technique [0002] Beijing is one of the capital cities with frequent geological disasters in the world. As the main type of sudden geological disasters, collapse is especially common along roads in mountainous areas of Beijing. According to the statistics of sudden geological disasters from 2013 to 2019, dozens of landslide disasters occur along mountainous roads every year, accounting for more than 55% of sudden disasters, sometimes even as high as 90%. Due to its unique suddenness and concealment, early warning and forecasting of collapse disasters is very difficult. In recent years, scholars at home and abroad have carried out a lot of research and experiments on the law of instability and failure of bedding slopes, using statistics, nonlinear theory, However, the research on the early warning...

Claims

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Application Information

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IPC IPC(8): G01N33/24G09B23/40
CPCG01N33/24G09B23/40
Inventor 李岩张国华李晓玮曹颖南赟申健
Owner BEIJING GEOLOGY INST