Identification of cores and core logging
Based on the rock mass rating (RMR), a rock having a value ranging between 41-60 will be rated as
In a core drilled for 100 m, the following fragments were obtained-24 m, 12, 11, 9, 22, 8, 12 and loose rock. The RQD of the rock is
In a one meter Run, there are Il core pieces, each of 9 cm what is the RQD-?
5 In a one mater Run, there are 09 pieces, each of 11em length, what is the RQD- ?
If the RQD% is <10% (less than 10%) then Quality of Rock is___________
Do fractures in core pieces affect the value of core recovery?
What is the length of core pieces which is considered for calculation of ROD.
Discontinuity Spacing is used to describe______