Vidyalelo
Mining Engineering · Q52

Rock Mechanics and Roof Supporting

Engineering and GATE · Mining Engineering · question 52

Q52

The measurements of a site investigation are as follows: In = 9, Jr = 1.5, Ja = 2.0, Jw = 1.0. SRF = 2.5. The RQD values taken from five boreholes of the area are 94.2, 95.6, 99.4, 95.3 and 98.0 respectively. The rock mass quality index (Q) is

A.
3.20
Answer
B.
5.60
C.
10.14
D.
20.10

Answer: Option A

Solution

Answer: Option A
No explanation is given for this question Let's Discuss on Board