Engineering Rock Mechanics

122 Rock masses: deformabili% strength and failure 8.2 Questions and answers: rock masses I For a simple sedimentary rock mass ...

Questions and answers: rock masses 123 is written out, tl +t2+t3+... tl + - t2 + -.. t3.. El E2 E3 Fractured strata Although t ...

124 Rock masses: deformability, strength and failure 0246 8 10 12 14 16 18 20 3L (fracture frequency), rn-I 48.2 For the unfract ...

Questions and answers: rock masses 125 Note that this result is directly analogous to the result obtained in the first part of A ...

126 Rock masses: deformabilify, strength and failure for a 2-D analysis with uniaxial loading. The equation is for two orthogona ...

Questions and answers: rock masses 127 Diagram 1 - one fracture set. There will be a variation in the modulus of fractured rock ...

128 Rock masses: deformability, strength and failure Diagram 2 -two orthogonal fracture sets. The formula E, = 2RMR - 100 gives ...

Questions and answers: rock masses 129 140- 4 120.1 r E: 5 100 L E 80.. 60- 40- a x 20- 0- Y and that the intact rock strength ...

130 Rock masses: deformabiliQ strength and failure 140 g 120 5 100 v C ul^80 ul 60 x 40 = 20 E (^0 0) 04 I 0 30 60 90 Inclinatio ...

Questions and answers: rock mosses 1 31 70 60 50 40 30 20 IO the heavier line in the 0" to 180" range in the plot below. h Fract ...

132 Rock mosses: deformobilw, strength ond failure h^80 0 & 70- 60.- 5 50- 40.- Ul L L u) 2 30 0 20- 10- 0- Y 0 .- -4 st ...

Questions and answers: rock masses 133 140- 3 120-- 5 loo-- = 2 80 % 60 40 w x E^20 80 -- = (90 + $w)/2 = 60' -- -- -- I ing dia ...

1 34 Rock masses: deformabilify, strength and failure 0 270 90 0 270 90 140.0.-^0 90 180 ltk One fracture set Two fracture sets ...

Questions and answers: rock masses 135 These materials may not be amenable to either standard rock mechanics or standard soil me ...

1 36 Rock masses: deformability, strength and failure Evaluating these equations for a range of values of normal stress, with va ...

Questions and answers: rock musses 137 Weathered granite: dashed Intact granite: solid lines lines 8.00 t t t ---._ ----.. -- fr ...

138 Rock masses: deformabilify, strength and failure for the strength parameters of fracture set B to find c^ = [OS x 0.0 + (1 - ...

Additional points 139 120 If 100 E. 6 80 (^2 60) 40 C u) x $ 20 04 I 0 30 60 90 120 150 180 210 240 270 300 330 360 lncllnatlon ...

140 Rock masses: deformobili?., strength and failure difficulty of obtaining detailed information, simplified approaches have be ...

9 Permeability 9.1 Permeability of intact rock and rock masses Permeability is a measure of the ease with which a fluid will flo ...