Development of a poly-axial platen for testing true-triaxial behavior of rocks

Mining at greater depths can lead to stress-induced failure, especially in areas of high horizontal in situ stress. The induced stresses around the opening are known to be in a poly-axial stress state where, σ 1  ≠ σ 2  ≠ σ 3 with special case of σ 3  = 0 and σ 1 , σ 2  ≠ 0 at its boundary, where σ...

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