TABLE B4: CURRENT CONDITION – UNDRAINED STRENGTH PARAMETER SET Material (kN/m3) Strength Parameters Porewater Pressure Operational Closure Zone A/I Fill – Sourced from mine overburden or foundation rock undercut 20.5 Sumin=150kPa Su/sigmav’=0.4 ru = 0.1 Phreatic^ Zone A/I Fill – Sourced from foundation undercut ash and alluvium 17.5 Sumin = 80 kPa Su/σv’ = 0.35 ru = 0.3 Phreatic^ Zone F Fill 20.5 Duncan Gravel/Cobbles with Cu>4 16%ile ru = 0.05 Phreatic^ Zone G Fill 20.5 Su=100kPa - - Stockpile (to Zone D2 Rockfill) 19.5 Duncan Gravel/Cobbles with Cu>4 16%ile ru = 0.05 Phreatic^ Stockpile (to Zone D3) 19.0 c = 10 kPa = 18 deg ru = 0.4 Phreatic^ Stockpile (to Zone E) 19.0 Su/σv’ = 0.21 ru = 0.6 Phreatic^ Ignimbrite Rockfill 20.5 Duncan Gravel/Cobbles with Cu>4 16%ile ru = 0.05 Phreatic^ Ash/Surface CW Rhyolite/Dacite/Ign. SPTN <8 17.0 Vert. eff. Stress (kPa) Su (kPa) ru = 0.3 Phreatic^ 0 0 100 46 300 103 600 189 1000 288 2000 460 EW to VW Rhyolite & EW Ign. And Dacite Rock 17.5 Hoek – EW/VW Rhyolite & EW Dacite/ Ign. Phreatic^ plus ru = 0.1 Phreatic^ W Rhyolite Rock 18.5 Hoek – W Rhy. Dac. Phreatic^ Phreatic^ VW Ignimbrite Rock 19 Hoek – VW Ign. Phreatic^ Phreatic^ VW Dacite Rock 18 Hoek – VW Dacite. Phreatic^ Phreatic^ W Dacite 25 Hoek – W Rhy. Dac. Phreatic^ Phreatic^ Epiclastic Mat. 17.0 c’=5kPa ’=35 deg Phreatic^ Phreatic^ Paleo Boulder Alluvium 17.0 c’=5kPa ’=35 deg Phreatic^ Phreatic^
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