Rock core clamping device for displacement scanning

Abstract

The invention belongs to the technical field of core holding units, and particularly relates to a core holding device for displacement scanning, which comprises a carbon fiber sleeve, an axial pressure applying mechanism, a clamping mechanism and a liquid discharging mechanism, the axial pressure applying mechanism, the clamping mechanism and the liquid discharging mechanism are located in the carbon fiber sleeve, and the axial pressure applying mechanism, the clamping mechanism and the liquid discharging mechanism are coaxially arranged with the carbon fiber sleeve; an accommodating cavity for accommodating a rock core is formed in the clamping mechanism; an annular closed confining pressure cavity for introducing high-pressure liquid is formed between the clamping mechanism and the carbon fiber sleeve; the liquid discharging mechanism is arranged at the bottom of the clamping mechanism, and the axial pressure applying mechanism is arranged at the top of the clamping mechanism. According to the technical scheme, the axial pressure applying mechanism and the annular closed confining pressure cavity are arranged, communication is established between the annular closed confining pressure cavity and the axial pressure applying mechanism, hydraulic sharing is achieved, confining pressure and axial pressure are simulated at the same time, the stress condition of a real rock in the stratum state can be better restored, and the rock stress performance is improved. The method is of great significance in improving the accuracy of experimental results.

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