With reference to the generic wedge shown in the sketch and the data in Table 2.12, the
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With reference to the generic wedge shown in the sketch and the data in Table 2.12, the water table is below the toe, vertical distance between A and O is 25.9 m (85 ft),point T is 12.2 m (40 ft) from point A, rock specific gravity is 2.46, and active wedge volume is 2,944 m3 (3,850 yd3).
(a) Find the dip direction (azimuth) and dip of the line of intersection of joint planes A and B.
(b) Find the range of intersection line azimuths that preclude sliding down the line of intersection.
(c) Find the length of the line of intersection between the face and plane A. Note: The foreland isflat.
Transcribed Image Text:
Dip dir. Dip Cohesion kPa Friction angle Direction angles Area m2 (*) Parameter (°) (psf) of normals a, B.y () (f2) plane Joint A Joint B Face Upland Tension crack 134 (2,800) 30 60 26 253 (5,280) 120 60 32 75 85 65 5 55 75 39 Tension crack IW Top of slope face A. H= vertical distance Toe of slope
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