Mining Engineering > GATE 2022 > Rock Mechanics
A 3-point borehole extensometer is installed to identify the location of a single discontinuity plane in a hanging wall rock by measuring deformations at three locations as shown in the figure. The absolute readings of deformations measured on two different dates are listed in the table. Based on the measured data the most likely inference is
A
Discontinuity between Anchor-1 and Anchor-2
B
Discontinuity between Anchor-2 and Anchor-3
C
Discontinuity between Anchor-3 and excavation boundary
D
No noticeable discontinuity

Correct : b

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