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Geotechnical Evaluation of Mine-Induced Earthquakes on Bruce Park Dam <br />Bowie Resources, Limited <br />June 2002 <br />10) TABLE 4.6 <br />MATERIAL PROPERTIES USED IN THE SHAKE MODEL OF THE LANDSLIDE <br /> Moist Saturated Modulus Soil Maximum <br /> Unit Unit Reduction Damping Layer Shear <br />Material Type Weight Weight Curve Curve Number'(') Modulus <br /> c ks <br />Glacial Till 130 132 Sun, et al. Sun, et al. 1 930 <br /> (1988) for (1988) for <br /> <br /> Clay with Clay, 2 930 <br /> <br /> Plasticity Average <br /> Index = 20 Relationship 3 930 <br /> to 40 4 930 <br /> 5 930 <br /> 6 970 <br /> 7 980 <br /> 8 990 <br /> 9 1010 <br /> 10 1020 <br />Failure Zone 126 128 Sun, et al. Sun, et al. <br /> (1988) for (1988) for <br /> Clay with Clay, 11 1030 <br /> Plasticity Average <br /> Index = 20 Relationship <br /> to 40 <br />Bedrock 133 139 Idriss Idriss <br /> (1992) for (1992) for 13 14000 <br /> Rock Rock <br />Note: <br />(1) * Refer to Figure 4.2 <br />4.5 Deformation Analysis <br />We considered that seismic deformations would likely take place along the "failure zone" <br />because that is the weakest zone in the landslide. Permanent deformations were estimated <br />using the yield acceleration for each of the water pressure conditions and the shear stress in <br />the failure zone computed by PROSHAKE. Permanent deformations are summarized in <br />Table 4.7 and were computed using the program NMARK for different groundwater <br />conditions and earthquake magnitudes. <br />I` Computer outputs of NMARK program are included in Appendix H. <br />02-05-2: Gcotechnical Evaluation of Mine-Induced Eanhquakcs <br />GEI Consultants, Inc. 17