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Testing device for conducting real-time observation on rock and soil mass cracks under suction measurement condition

A real-time observation and test device technology, which is applied in measurement devices, suspension and porous material analysis, instruments, etc. Effect

Active Publication Date: 2016-08-03
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the current observation of rock and soil cracks in the dry-wet cycle process is limited to the condition of not controlling or measuring the suction, and only studies the observation of a certain surface of the rock and soil, and cannot achieve multi-angle and multi-plane observation

Method used

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  • Testing device for conducting real-time observation on rock and soil mass cracks under suction measurement condition
  • Testing device for conducting real-time observation on rock and soil mass cracks under suction measurement condition

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Embodiment Construction

[0023] Such as figure 1 , 2 As shown, a test device for real-time observation of rock and soil cracks under the condition of suction measurement, it includes an air circulation test system and a PIV test system using a tensiometer to measure suction; the air circulation test system includes a transparent closed container 1, a transparent A soil sample 10 is housed in the closed container 1, and a tensiometer 2 is respectively arranged on the top and bottom of the soil sample 10. The outside of the transparent closed container 1 is connected to the air circulation pump 3 through a trachea, and the soil Sample water content detection device; PIV measurement system includes LED floodlight 13, CCD high-speed camera 14 and image acquisition processor 15, LED floodlight 13 is arranged on the top of three sides of the air circulation test system, CCD high-speed camera 14 is arranged in the air The three sides of the cycle test system are connected with the image acquisition processo...

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Abstract

The invention discloses a testing device for conducting real-time observation on rock and soil mass cracks under the suction measurement condition. The testing device comprises an air circulation testing system and a PIV testing system. Compared with the prior art, the testing device can truly represent the drying and rainfall infiltrating process of soil masses in a natural state through the air circulation testing system and continuously measure the suction and moisture content of a soil test sample through a tensiometer and an electronic balance, and the testing time is greatly shortened through usage of an air circulation pump; meanwhile, by cooperatively applying the PIV system, the morphological characteristics of the rock and soil mass surface cracks can be observed in real time at multiple angles. The model testing device is convenient to operate, and the related instruments are simple in structure, high in adjustability and easy to master.

Description

technical field [0001] The invention relates to a model test device applied to geotechnical engineering geotechnical tests, in particular to a test device for real-time multi-angle observation of rock and soil cracks under the condition of suction measurement. Background technique [0002] Due to the expansion and contraction of rock and soil (especially expansive soil) caused by precipitation and evaporation, engineering disasters occur frequently, such as building foundation uplift, road and bridge embankment cracking, and ditch slope instability. For example, a low-rise building based on expansive soil also suffers serious damage due to the small overlying load, such as the inclination of the building and a large number of cracks in the wall. Compacted or rolled expansive soil is often used in the construction of anti-seepage channels. For example, the construction of my country's South-to-North Water Diversion Project involves a large amount of expansive soil. The restri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/088
Inventor 张俊然史颜玲姜彤李洪军任淼张昕
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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