Engineering Rock Mechanics
1 02 Fractures and hemispherical projection 0.1 and from this we find that the number of pieces longer than 0.2 m is N0.2 = 0.05 ...
Questions and answers: fractures and hemispherical projection 1 03 A7.2 Using the negative exponential distribution, for which t ...
1 04 Fractures and hemispherical projection What length should the rockbolts be if 95% of them are required to intersect at leas ...
Questions and answers: fractures and hemispherical projection 1 05 This equation cannot be solved explicitly, and so we use tria ...
1 06 Fractures and hemispherical projection (2) Sketch a circular arc around the northwest quadrant of the tracing paper, centre ...
Questions and answers: fractures and hemispherical projection 1 07 will maximize the range of RQD valuesa. How do the RQD values ...
1 08 Fractures and hemisphericul projection The frequency is then 10.115 m-l, and the reciprocal of this is the mean length of t ...
Questions and answers: fractures and hemispherical projection 1 09 This shows how, by adopting the larger RQD threshold, we have ...
1 10 Fractures and hemispherical projection west line 90" and mark and la- to set 1. Rotate the tick mark 265/42 Extreme values ...
Questions and answers: fractures and hemispherical projection 1 1 1 (3) Using the normal to set 2, sketch those parts of the cir ...
1 12 Frudures and hemispherical projection (4) A normal with an orientation of 051/24 measured represents a plane which dips tow ...
Questions and answers: fractures and hemispherical projection 1 13 ents the axis of the core, rather than the vertical. (4) Rota ...
1 14 Fractures ond hemisphericul projection pfd = Bn0 x (n/180); 1 = sin(an)cos(Bn); m = cos(an)Co~(B~); and n = sin@,). The mod ...
Additional points 1 15 To find the angular error that would exist if the correction were not made, we compute the angle subtende ...
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Rock masses: deformability, strength and failure 8 8.1 The nature of rock masses In Chapters 6 and 7, we have posed and answered ...
1 18 Rock masses: deformability, strength and failure ...
The nature of rock masses 1 19 Figure 8.1 (left and above) Examples of fractured rock masses. (a) Folded rock mass in Crete illu ...
120 Rock masses: deformability, strength and failure A Figure 8.3 The presence of a fracture in a stressed rock specimen. normal ...
The nature of rock masses 1 2 1 n 3 5 P r E a __ Shearing failure -- I 10 30 50 70 90 Inclination of discontinuity normal to ...
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