#6556. Dynamic Mode ? fracture behavior of rocks under hydrostatic pressure using the short core in compression (SCC) method

November 2026publication date
Proposal available till 05-06-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Geotechnical Engineering and Engineering Geology;
Geochemistry and Petrology;
Energy Engineering and Power Technology;
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Abstract:
The shear failure of rocks under both a static triaxial stress and a dynamic disturbance is common in deep underground engineering and it is therefore essential for the design of underground engineering to quantitively estimate the dynamic Mode ? fracture toughness K?C of rocks under a triaxial stress state. However, the method for determining the dynamic K?C of rocks under a triaxial stress has not been developed yet. With an optimal sample preparation, the short core in compression (SCC) method was designed and verified in this study to measure the dynamic K?C of Fangshan marble (FM) subjected to different hydrostatic pressures through a triaxial dynamic testing system. The formula for calculating the dynamic K?C of the rock SCC specimen under hydrostatic pressures was obtained by using the finite element method in combination with secondary cracks.
Keywords:
Fangshan marble; Finite element method; Hydrostatic pressure; Loading rate; Mode ? fracture toughness; Short core in compression

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