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HF Applications
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Knowledge
of the in situ stress in rock mass is required in the design
of underground openings, in the earthquake studies, and in
the extraction of oil and gas. The magnitudes and directions
of in situ stresses, obtained by hydraulic fracturing, provide
the crucial design parameters - layout (orientation, depth,
and cross-sectional shape) of the opening, frictional strength
of the fault, and orientation of the fracture propagation.
The following are the examples of underground activities requiring
the state of in situ stresses.
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Large
Scale Breakouts in URL
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