Page 39 - Numerical Analysis and Modelling in Geomechanics

20 JOHN W.BULL AND C.H.WOODFORD

Table 1.15 Deflection readings in percent for material set 13, group 3 part 1.

Table 1.16 Deflection readings in percent for material set 14; group 3 part 2.

Table 1.17 Deflection readings in percent for material set 15; group 3 part 2.

Table 1.18 Deflection readings in percent for material set 16; group 3 part 2.

before the deflections then decrease. Material sets 12 and 13 give very similar
deflection results which indicates that there are, for material sets 12 and 13,
optimum depths of detonation that cause maximum surface deflections. The only
difference in the material sets’Young’s moduli is in zone 4, where material set 12
has a value of 190 MPa and material set 13 has a value of 95 MPa. Thus the