Ultralow-temperature open frost heaving experiment system and experiment method
An experimental system, ultra-low temperature technology, applied in the field of experimental equipment for the open frost heaving process
Pending Publication Date: 2022-08-09
SHANTOU UNIV
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Problems solved by technology
[0003] The purpose of the present invention is to provide an ultra-low temperature open frost heave experimental system and experimental method to solve one or more technical problems in the prior art, at least provide a beneficial choice or create conditions
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[0031] The concept, specific structure and technical effects of the present invention will be clearly and completely described below with reference to the embodiments and accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts are all within the scope of The scope of protection of the present invention. In addition, all connection relationships mentioned in the text do not mean that the components are directly connected, but refer to a better connection structure that can be formed by adding or reducing connection accessories according to specific implementation conditions. Various technical features in the present invention can be combined interactively on the...
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The invention discloses an ultralow-temperature open frost heaving experiment system and method, and the system comprises a refrigeration device which comprises a refrigeration part; a top cover is arranged at a top opening of the sample box, the bottom of an inner cavity of the sample box is covered with a bottom plate, the bottom plate can slide up and down along the inner wall of the sample box, the refrigeration part is arranged on the top cover, and a cooling structure of the refrigeration part directly faces the inner cavity of the sample box; the clamping device is provided with a pressing end capable of being adjusted up and down, and the pressing end can press the top cover and the sample box mutually; the frost heaving amount measuring device is fixed to the sample box, the frost heaving amount measuring device is provided with a telescopic measuring end, the measuring end extends upwards and abuts against the bottom plate all the time, the top cover and the sample box are clamped in advance through the pressing end, and the pressed top cover limits the expansion direction of the sample, so that the sample can only expand downwards and extrude the bottom plate; the bottom plate displaces to drive the measuring end to displace, and the frost heaving strain of the rock-soil body can be obtained by detecting the position change of the measuring end.
Description
technical field [0001] The invention relates to the technical field of experimental equipment for studying the open frost heave process of rock, concrete, asphalt, etc., in particular to an ultra-low temperature open frost heave experiment system and an experiment method. Background technique [0002] In engineering practice, rock and soil mass is usually in an open frost heave system with obvious temperature gradient. However, the existing open frost heave research mainly focuses on weak low temperature (temperature greater than -50°C), slow freezing (temperature drop less than 10°C) / day), the problems of ultra-low temperature (temperature less than or equal to -50°C) and variable-speed frost heave in emergency engineering mechanics are ignored. Different from the natural temperature in ordinary cold regions, the ultra-low temperature environment will affect the water migration process of rock and soil. At the same time, different degrees of frost heave disaster progress...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G01N25/16G01B5/00G01B5/30F25B41/40F25B49/02
CPCG01N25/16G01B5/0004G01B5/30F25B41/40F25B49/02
Inventor 王震吴鸣杜威颜爽杨燚
Owner SHANTOU UNIV