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

Similar Questions

A Mohr-Coulomb envelop between shear stress, t and normal stress, σn of a sandstone rock is given as τ=7.5+0.84 σn ( unit of stresses is MPa ) A...
#44 Fill in the Blanks
A circular tunnel is constructed at a depth of 100 m. The average unit weight of overburden rock is 27.0 kN/m3. If the tangential stress measured at point A loc...
#45 Fill in the Blanks
A shear stress t acts tangentially to the upper surface of a block and causes a small deformation Δw as shown. The shear strain is calculated by
#68 MCQ

Related Topics

No tags found

Unique Visitor Count

Total Unique Visitors

Loading......