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Morrison Quarry AM-07 Geotechnical Stability Exhibit <br /> DRMS Permit M-1973-021 <br /> Aggregate Industries WCR Inc. <br /> Modulus Ratio (MR) for Intact Modulus Estimates <br /> iahk 8:Guidelines fur the selection oCmodulus ratio(W)Values ill Uquation(26)-huxd Disturbance Factor- D <br /> oil Dicere(1968)and PahnsWim aril Singh(2001 I <br /> Clue G_* To um <br /> Coarse 3ito6ttw Fne ti' litae D=1.0 <br /> ConSlomerates sarttbratta fitltstones C4ayuotsw Recommended value for production blasting in large open pit slopes <br /> 300 400 200-350 3140-400 200-300 Use for bench and multi-bench stability analyses with slopes<250 feet tall <br /> liewetu Gttry:Kkta Sbd" Use for deep failure planes in global case <br /> cum 230.)M 150 1170.23t1• D=0.0 <br /> Bade <br /> � 150-200 <br /> X Ovotadtme sparttK 'M crate DaW"" <br /> _ Cwboaata Lttnestow Ltmtstonvs Lowtstoo" 150-190 <br /> Ja0-600 600-840 800-1D04 <br /> ion Oypsrtm AMN*&te <br /> Clues Et• 3!0�'• �;tfi,•• <br /> clank <br /> O% ►c 1000- <br /> \on Fodrted Ma Ne Hon fds Quaruttes <br /> 'W_1000 400--00 300-i!0 <br /> Metaterubtone <br /> r X0.300 <br /> 1114fmaoae Arsploilbows its Bench and Multibench Failure Envelope <br /> Atmod 350400 40-500 _W 0.35 <br /> FotioW sehises :11e- N:'.'jf Sloes <br /> 230-t1W ficta, 400-W* 0.3 — — <br /> Approx.Max Multi-bench EvaL Limit <br /> Gsa me- h°°'t'" Bench Height (250ft) <br /> JW-330 30W-3'D MR=500(general) o.zs <br /> L't chranodorttr- MR=500(Sill.Gneiss <br /> t00-a c0 <br /> PMaoraa _ Y 0.2 <br /> Gabbto Dolerue v <br /> Dade A00!% 300-A00 0.15 <br /> Name <br /> 3S{t-/00 N <br /> 3fvpabtis17 Fwpltsaes Dubose pendattte 0.1 —Hoek-Brown Criterion <br /> (100*• 300-350 0-300 <br /> to+t 304 3 lithivAte e _. 0.05 <br /> � �'okarnc Andsrte 33aeak <br /> 300.300 2S9-45. 0 <br /> NTa.lasbc .4,sglamerme Vail ar1K breccu Ttdr 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 <br /> 300-404 000).. 240 400 <br /> Normal stress(ksi) <br /> •Htrhh-attsonopec cocks the vAw of MR w dt be i4pa5cartdc different tf normal streon and of ioadtn <br /> occurs puattet awfi MR,,or peapers mAn(two MR)to a weAmoit plane crutul test loads[duectw- The Hoek-Brown Failure Criterion for localized bench failures is shown graphically <br /> should be equµrtllortt to field appbcabon <br /> FC1tKGttrs-aids Cow"Grioredof Akeredilss3hMSR's fmtdtsa»edilo-t`-pi above. <br /> ••No dau at•ttitebts,ettamated on the barn of geobogral lopc <br /> GEI Consultants, Inc. 5 of 25 Appendix C.1 <br /> November 2020 <br />