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Full-automatic frost heaving meter

A fully automatic, frost-heave technology, applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of low groundwater level adjustment accuracy, easy to be affected by ambient temperature, and reduce test accuracy and efficiency, so as to improve control and Measuring Accuracy, Improving Accuracy, Improving Effects of Effectiveness

Pending Publication Date: 2017-10-10
南京泰克奥科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] After searching the patent literature, some useful explorations and improvements have been made in the function of the equipment in the existing technology. Due to the disadvantages of applicability and other aspects, a frost heave equipment that can conduct experimental research on subgrade frost heave and water migration is proposed, which improves the accuracy and function of test control. However, the invention uses weight loading, which makes it difficult to achieve continuous load. and the water supply device uses a Martens bottle measuring cylinder, the adjustment accuracy of the groundwater level is low, it is easily affected by the ambient temperature, and evaporation and other phenomena occur. Temperature, but can not effectively improve the accuracy of the top and bottom temperature control of the sample, at the same time, the invention can not realize the automatic control and measurement of the test process, which reduces the accuracy and efficiency of the test

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as Figure 1 to Figure 7 shown. A kind of full-automatic frost heave instrument, it is characterized in that, it comprises main engine loading frame 1, is positioned at the freezing pressure chamber 2 on main engine loading frame 1, the high and low temperature circulation control system 3 that is connected with freezing pressure chamber 2, is connected at freezing pressure The water level control system 4 at the top of the chamber 3, and the computer 5 connected with the water level control system 4;

[0046] The full-automatic frost heave instrument described above, the host loading frame 1 includes a loading beam 1-2, a load sensor 1-4, a pull rod 1-6, a control panel 1-8, a steel frame 1-11, and a servo drive device 1-12, screw rod 1-14;

[0047] The steel frame 1-11 is respectively equipped with a pull rod 1-6 and a box body 1-9; the servo drive device 1-12 is fixed on the side of the box body 1-9, and is installed in the box body 1-9. The screw rods 1-14 a...

Embodiment 2

[0063] The working method of the full-automatic frost heave instrument of the present invention is:

[0064] Temperature control: step a: temperature control at the upper end of the frozen soil sample 2-12: start the first high and low temperature cycle control system 3-1, and the constant temperature liquid (temperature t0) inside the system passes through the lower end temperature control inlet 2-28, the lower end The temperature-controlled annular water passage 2-30 and the lower temperature-controlled outlet 2-29 circulate, and finally flow into the first high-low temperature cycle control system 3-1. During the cycle, the constant-temperature liquid will be affected by external environmental factors. The liquid When the temperature changes, the temperature t1 of the liquid inside the lower temperature-controlled annular water passage 2-30 is measured by the lower temperature sensor 2-19, and the temperature t1 is fed back to the computer 5. By comparing and analyzing the t...

Embodiment 3

[0069] The operating steps of the full-automatic frost heave instrument of the present invention are:

[0070] a. One-way / two-way freezing process test

[0071] Step 1: Install the sample, apply a layer of Vaseline inside the plexiglass cylinder 2-4, and slowly push the frozen soil sample 2-12 of the specified size into the plexiglass cylinder 2-4 by hand. In the same way, the placement direction of the frozen soil sample 2-12 should be kept as its natural deposition direction, and the filter paper and the upper permeable plate 2-11 are placed in turn on the upper end of the frozen soil sample 2-12, and the filter paper and the lower permeable plate 2-11 are placed in turn at the lower end of the frozen soil sample 2-12. 13, and place the plexiglass cylinder 2-4 containing the frozen soil sample 2-12 in the structure B 2 upper part of structure B 1 Gently push in from the upper part of the plexiglass cylinder 2-4, and make contact with the upper water-permeable plate 2-11; p...

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Abstract

The invention discloses a full-automatic frost heaving meter which comprises a host loading frame (1), a freezing pressure chamber (2) and a high-low temperature cycle control system (3), a water level control system (4) and a computer (5). The freezing pressure chamber (2) is positioned on the host loading frame (1), the high-low temperature cycle control system (3) is connected with the freezing pressure chamber (2), the water level control system (4) is connected to the top of the freezing pressure chamber (2), and the computer (5) is connected with the water level control system (4), the host loading frame (1) and the high-low temperature cycle control system (3) and can be used for test control and acquisition. The full-automatic frost heaving meter can realize automatic control and acquisition of the test process, the requirement of high precision of test control in test can be effectively met by servo closed loop control, and the full-automatic frost heaving meter is high in stability and long in service life.

Description

technical field [0001] The invention relates to a fully automatic frost heave instrument, in particular to a test device capable of studying the frost heave force, frost heave amount and moisture migration of rock and soil materials during the freezing process. Background technique [0002] Soil is the product of rock weathering in nature, and its physical and mechanical properties are greatly different due to the influence of its formation process and region. Usually, in permafrost and seasonally frozen regions, due to complex environmental and geographical conditions, soil Physical and mechanical performance indicators are often difficult to grasp. [0003] Compared with general soil, soil in permafrost and seasonally frozen regions is more affected by physical and mechanical indicators such as frost heaving force and frost heaving amount. According to statistics, the area of ​​permafrost and seasonal frozen soil in western my country accounts for more than 60% of the tot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
CPCG01N25/00
Inventor 季李通
Owner 南京泰克奥科技有限公司
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