Discrete Element Simulation of Cavity Expansion in Rock

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Discrete Element Simulation of Cavity Expansion in Rock

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2016

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Cavity expansion within soil or rock is an important issue in geomechanics because it often appears in geotechnical related problems. This work describes the initiation of fracture in a laboratory specimen of Berea sandstone with a cylindrical opening, modeled using the discrete element method (DEM). The effect of far-field stress and borehole size on breakdown (peak) pressure was investigated. The results demonstrated that an increase in either the far-field stress or the borehole diameter caused the peak pressure to decrease. This showed that the size effect was governed in part by both the loading conditions and borehole size.

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Faculty advisor: Joseph Labuz

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This research was supported by the Undergraduate Research Opportunities Program (UROP).

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Carney, Alyssa. (2016). Discrete Element Simulation of Cavity Expansion in Rock. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/179886.

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