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Large frozen soil model test system with moisturizing function and frost heaving test function

A technology for model testing and testing functions, applied in the field of scientific testing and research, it can solve the problems of lack of soil freezing model testing system and less model testing research, and achieve the effect of convenient use.

Inactive Publication Date: 2015-05-06
HENAN UNIVERSITY
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  • Description
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Problems solved by technology

There are few model test studies on the problems related to the artificial ground freezing method, and there is still a lack of a relatively complete soil freezing model test system

Method used

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  • Large frozen soil model test system with moisturizing function and frost heaving test function
  • Large frozen soil model test system with moisturizing function and frost heaving test function
  • Large frozen soil model test system with moisturizing function and frost heaving test function

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Embodiment Construction

[0035] The large-scale frozen soil model test system with the function of replenishing water and the function of frost heaving test of the present invention will be described in detail in conjunction with the accompanying drawings.

[0036] Based on the large-scale frozen soil model test system with water supply function and frost heave test function of the present invention, through the system's seepage water supply system, freezing system and loading system, the water field, temperature field and stress field in the process of soil freezing can be realized. Three-field coupling simulation experiment. First of all, the system can simulate the groundwater environment and is an open system. In the test, it can provide water supply for migrating water when the soil freezes, and simulate the moisture field of the groundwater environment as much as possible, so that not only in-situ frost heave can occur when the soil freezes, but also condensate frost heave with water migration a...

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Abstract

The invention provides a large frozen soil model test system with a moisturizing function and a frost heaving test function. A moisturizing system and a refrigeration system of the model test system are arranged in a model tank box body; a loading system capable of vertically moving is arranged at the top of the model tank box body; a temperature field test device is arranged at the periphery of the refrigeration system; a frost heaving three-dimensional stress-strain test device is arranged on the inner side wall in the model tank box body; and a frost heaving and thaw collapse observation device is fixedly arranged at the top of the model tank box body. The large frozen soil model test system has the beneficial effects that a platform for scientific research is provided for researching the physical and mechanical properties of artificially frozen soil and optimizing an artificial freezing method; the large frozen soil model test system can be widely applied to freezing method construction model tests in the fields of geotechnical engineering, underground construction, traffic engineering and the like, for example, simulation tests are carried out on underground construction such as shield tunnel inlet and outlet freezing reinforcement, contact passage freezing method construction, and deep foundation pit freezing support; in addition, the natural frozen soil can also be simulated by adjusting control parameters of refrigerating machines; and large frozen soil model test system is applied to research on damages and effects on buildings and structures caused by seasonally frozen ground and frozen soil in permafrost regions.

Description

technical field [0001] The invention relates to a large-scale frozen soil model test system with functions of replenishing water and testing frost heave, and is especially suitable for carrying out scientific experimental research on frozen soil. The invention can conduct the freezing performance test of rock and soil materials, study the frost heaving mechanism of the soil, and complete the three-field coupled model test of the moisture field, the temperature field and the stress field of the soil. Background technique [0002] With the acceleration of urban infrastructure construction in our country, a wave of subway rail transit construction has emerged in major cities, and the topic of underground space development has become a hot spot in academic research. The artificial ground freezing method has the advantages of good water sealing, high strength, no environmental pollution, strong adaptability, and good recovery. It is more and more used in underground space develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 李顺群张少峰鲍鹏孔德志马金栋王彦洋杜红普柴寿喜贾红晶王杏杏
Owner HENAN UNIVERSITY
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