Parameter

Description

Value

RQD

43 - 48

43 - 48

Jn

Three joint sets with random

12

Jr

Smooth or rough to Craw or Planar

1

Ja

Softening or low friction clay mineral coatings

4

Jw

Inflow

0.66

SRF

Medium stress, favorable stress condition

1

Q

0.592 - 0.66

Class No.

Very poor rock