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ROCK MASS PROPERTIES

Prop e:i es Rock Mass Prop e:i es
Rock Mass

Weat her i ng Rock/Soi l Mass Weat her i ng Rock/Soi l Mass
Gr ad e Class Gr ad e Class
Joi nt Sp aci ng , Block Volume
Joi nt Sp aci ng , Block Volume
(m) (m3 ) (m) (m3 )

BEDDED NON BEDDED

V I Soi l Mass V I Soi l Mass 0 . 3 - 0 . 5 0 . 0 41 - 0 . 075

V 0 . 0 0 5 - 0 . 2 5 0 . 0 0 17 - 0 . 0 2 5 V 0 .42 0 . 0 48

Mass 0 .18 - 0 . 0 0 6 -
I V Hard 0 . 3 0 .12 Mass
MPa) 0 .10 - 0 . 0 1 - I V Hard 0 . 5 0 . 0 8 8
MPa)
(< 2 0 .1 - 0 . 0 10 -
(< 2
I I I 0 . 5 0 . 57
-
I I I 0 . 3 - 1. 0 0 . 0 2 9 - 0 . 875
0 . 3
-
0 . 0 3 8
I I Rock Mass 0 . 3 - 0 .7 0 . 2 55 - 0 .6
Mass
I (> 2 MPa) I I Rock MPa) 0 .6 - 1. 3 0 .78 - 1.47
I (> 2 0 .9 - 2 . 0 0 .68 8 - 2 . 0

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