Rock-soil body disintegration test device and analysis method

A technology of testing analysis and testing equipment, which is applied in the field of analysis and testing, can solve the problems of data accuracy error and inability to accurately obtain the disintegration of rock and soil mass, and achieve the effect of improving accuracy and accuracy

Active Publication Date: 2019-07-26
NANJING UNIVERSTIY SUZHOU HIGH TECH INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it should be pointed out that if the tension meter method is used to analyze the disintegration of rock and soil, the water content of the rock and soil itself has an important impact on the disintegration process, and there are certain errors in the accuracy of the data. In addition, the sensor The collected data is in a state of constant fluctuation, and it is impossible to accurately obtain the disintegration of the rock and soil mass at a certain moment

Method used

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  • Rock-soil body disintegration test device and analysis method
  • Rock-soil body disintegration test device and analysis method
  • Rock-soil body disintegration test device and analysis method

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Such as figure 1 As shown, a rock and soil mass disintegration test device includes a base 10, a support 20, a light box 30, a digital camera 40, an LED light 50, and an open container 60 made of plexiglass; the open container 60 is used to hold Rock and soil samples 70 and deionized water 80 , and a digital camera is connected with an image analysis system 90 . The image analysis system 90 includes a data transmission module, a data processing module, and an image storage module, and the image analysis system 90 is connected to the digital camera 40 in a wireless or wired manner.

[0061] The base 10 is placed on a horizontal desktop, the lighting light box 30 is placed and the LED light 50 is installed and debugged to ensure a stable light flux in the light box and illuminate during the disintegration test.

[0062] The LED lamp 50 is installed on the inner wall of the lighting light box 30, and at least three ring lamp groups are installed to ensure that the rock an...

Embodiment 2

[0076] The installation and analysis methods for the rock and soil disintegration test device are the same as in Example 1, but the rock and soil samples are different. In this embodiment, the sample is a mixture of sand and cohesive soil in Example 1, wherein the average of the sand The particle size is 0.5 mm, and the added mass fraction is 10%. The samples were treated with MICP several times to explore the effect of MICP on the water stability of cohesive soil under different sand contents.

[0077] After 25s disintegration test, the results show that: Figure 5 As shown, the disintegration index of the sample gradually increased with time within 25s and tended to be stable. During the entire disintegration process, the disintegration index increased rapidly in the first 10s, an increase of 0.27 units, indicating that the sample disintegrated violently within 10s. After 10 seconds, the disintegration index gradually stabilized at about 1.32, indicating that the disintegra...

Embodiment 3

[0079] The installation and analysis method for the rock and soil disintegration test device is similar to that of Example 1, but the rock and soil samples are different. In this embodiment, the sample is a mixture of sand and clay, and the average particle size of the sand is 0.5mm. The added mass fraction is 20%. The samples were treated with MICP several times to explore the effect of MICP on the water stability of cohesive soil under different sand contents.

[0080] After 25s disintegration test, the results show that: Figure 5 As shown, the disintegration index of the sample increases gradually with time within 25s, and finally when the disintegration index tends to be stable, it only increases by 0.05 units, which is 15.6% of the sample with 10% sand content. This shows that increasing the sand content by 10% is beneficial to the water stability of MICP modified cohesive soil, and further demonstrates that the disintegration index can effectively characterize the disi...

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Abstract

The invention discloses a rock-soil body disintegration test device and analysis method, and belongs to the field of analysis and test. The rock-soil body disintegration test devicecomprises a base and an open container used for containing a rock-soil body sample, and the inner diameter of the bottom of the open container is less than or equal to the inner diameter of any cross section of the wallof the open container; the test device further comprises an illumination light box used for coveringthe open container, the illumination light box comprises a side wall and a top wall, a window is opened in the top wall,and the cross section of the rock-soil body in the open container can be observed through the window; and an opening used for entering and exiting of the open container is formedin the side wall. The rock-soil body disintegration test device is used for analyzing the disintegration performance parameters of the rock-soil body,the ratio of ahorizontal projected area St of therock-soil body at a certain moment andahorizontal projected area S0 of the rock-soil body at the initial time of a disintegration test is taken as arock-soil body disintegrationindex at a specific moment, and the disintegration characteristics of a soil body can be effectively characterized and evaluated by using the disintegration index.

Description

technical field [0001] The invention belongs to the field of analysis and testing, and more specifically relates to a rock and soil mass disintegration testing device and analysis method. Background technique [0002] When the rock and soil mass with low moisture content is submerged in water, the phenomenon of disintegration and disintegration occurs is called disintegration. The disintegrated soil particles lose their structural connection and are in a loose state. The occurrence time is short and irreversible, which will cause sudden damage to the building structure. The disintegration of rock and soil plays a very important role in evaluating the stability of embankment cuttings, channel slopes, open pits, etc. Therefore, the research on disintegration of rock and soil mass is particularly important in engineering. [0003] The early disintegration test of rock and soil was to put the sample into still water, observe and describe the disintegration reaction of the samp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84G01N21/01G06T7/00G06T7/11G06T7/62
CPCG01N21/01G01N21/84G01N2021/0112G06T7/0004G06T2207/30132G06T7/11G06T7/62
Inventor 唐朝生谢约翰尹黎阳吕超刘博李昊蒋宁俊施斌程青
Owner NANJING UNIVERSTIY SUZHOU HIGH TECH INST
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