Real-time monitoring device and method for freezing-thawing damage of rock

Abstract

The invention belongs to the field of rock engineering and in particular discloses a real-time monitoring device and method for freezing-thawing damage of rock. The detection device comprises a left device and a right device, wherein the left device and the right device are connected with each other through bolts and nuts; each device consists of a containing slot and a fixing device; an electrode insertion hole is formed in each fixing device; the electrode insertion holes are connected with metal meshes through metal wires; the metal meshes are arranged at the end parts of mounting holes; the mounting holes are formed in the fixing devices; the electrode insertion holes are connected with wires through electrode insertion pins; two ends of a test sample are arranged in the mounting holes; a rubber film covers the test sample. The method comprises the following steps of: preparing the test sample, filling water, arranging the test sample, putting the test sample into a freeze tester for a freeze test, measuring an alternating current impedance spectroscopy, and analyzing a change rule of the freezing-thawing damage of the rock. According to the device and the method, on the basis that an inner microstructure of the rock test sample is not damaged, the freezing-thawing damage characteristic of the rock is tested; furthermore, in the freezing-thawing test process, the freezing-thawing damage measurement can be realized.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and in particular relates to a device and a method for measuring rock freeze-thaw damage characteristics by an electrochemical method. Background technique [0002] The area of ​​permanent and seasonal cold regions in my country accounts for about 3 / 4 of the total land area. The influence of freeze-thaw environment conditions or freeze-thaw environment changes in geotechnical engineering in cold regions on rock stability is a factor that cannot be ignored. [0003] Rock is a geological material with long-term structure and function of nature, and the existence of various defects inside it is inevitable, which provides the necessary conditions for freeze-thaw damage. Freezing and thawing will aggravate the weathering of surrounding rocks, thereby intensifying the freezing and thawing damage of surrounding rocks. The development of damage mechanics theory provides new ideas and means for t...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the detection accuracy of rock freeze-thaw damage is not high and cannot be monitored in real time, and a real-time monitoring device for rock freeze-thaw damage damage with high detection accuracy and real-time monitoring is provided, and the rock freeze-thaw damage is introduced. Real-time Monitoring Method of Damage and Destruction

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