The excess pore pressure in backfill material in a cut-and-fill stope – McqOptions

MCQOPTIONS

1.	The excess pore pressure in backfill material in a cut-and-fill stope leads to
A.	reduction in strength of the wall rock
B.	enhancement of bearing strength of fill
C.	loss of shear resistance of fill
D.	prevention of progressive failure of crown pillar
Answer» D. prevention of progressive failure of crown pillar

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