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Geotechnical Stability Exhibit ��� <br /> Engineering Evaluation of Highwall Design for the South Quarry of the Morrison Quarry <br /> Appeamnre of rock mass Dexnpt'mn.1 to.k mass SuRRrstesl <br /> .ale.m r <br /> rxrurm eprahry roerrasrd ataar:ag a r:<ava.em by <br /> . r reemw amiael star hce tesutes m misdaw rbseurhw.e u-o <br /> .a ehe[oatuord rack mau ssxswxbag•raPpel, <br /> �tertsmraal or lsand rxrarxm m pom quality eark <br /> manes tm hlasemg)resales m mamma[durmbanre ea U=0 <br /> r}� the surroeadeeg mrl eeass <br /> /� M' squreaiegt prau——a m arguiliram I]'— D•0.5 <br /> Mare,devM.—ran b.sesxe eedns.rnopmvy <br /> unere.a shorn'm Ihr ph upt aph.a plarrd. imM <br /> l.ry Pa°•9�eey htamng m a hant—k t.—I read. <br /> ut Yvm be al damage,euerdmg:m 7 m.m rlX ll.p,8 <br /> amrmmhng rrrrk mass <br /> yr Small xal.hl—g m OW yL—..,shpe• -Ades D-0.7 <br /> Vb rmd—eQh mm d—W panruiarly 1 r...LI d Geed bL ieg <br /> hiasrieg is used as rhovo ap dle lrh Isuul side d she <br /> pbm.Sr.*leo—,me:eeliel revdrs D=1D <br /> disso4m.e. are Porn W—i <br /> t'ery laegr npns ph rtdr slopes sutler siga�uo[ U=t.O <br /> disonhae der m 6ew7 pvdaum Haste and also Peodcaon <br /> due m mess relYf exam—d—deo--.L bh.�og <br /> P <br /> Zfl s®e sober nsles oaaradm a�he Arid m by L�=ll.- <br /> F ripplog and d..*-nd the degee ,d- T.,m sew NleeM—I <br /> r\ slopes is less. ..��a..ra. <br /> Figure 4: Suggested Value of D based on excavation method (Hoek, 2000) <br /> Roc¢ Class Group t�pe Carsr ee Siedism'r Fme ti'mfine <br /> Conelomemteae Saadst— Siilutuoes Claystuoes <br /> (21=3) 17=4 'z2 4x2 <br /> 9reccias Drey.%Naes Shales <br /> i Clamc (19=5) (IS=3) [6t2) <br /> 11.1. <br /> (7=2) <br /> Crystall t Sparhic ]5icriric Dolomites <br /> Carbonates Lrmesoone Limestanes Limestones (9-3) <br /> lion- Gypsum Anhsdtite <br /> Clastie Er ones g=2 11=2 <br /> C'h" <br /> Organic =2 <br /> 4Satble Ho.&L Qtmr¢ites <br /> = Sex Feliurd 9:; (i9=a} 2U=3 <br /> :sleeasssdstane <br /> l9=3 <br /> ]ligmaate Ampbrbolites <br /> ~ Slightty Foliated "'9=;; 26=6 <br /> foliaerd•• Gnerr. sdhists PwMit., Slates <br /> G.azu[e Diorrce <br /> ;2x; 21=3 <br /> Li_gtu Granodorde <br /> (29=3) <br /> Plutamc <br /> Oatsbro Doletar <br /> \Date <br /> 20=5 <br /> Hypab�sal Pot hydes DW.- Pesid bte <br /> (26-5) (15-5) (25-5) <br /> Rhyatite DICile Obsidian <br /> Lase (25=5) (25t3) (19=3) <br /> L'okatic A..I.e tr Hasr11 <br /> 25t5 _St5 <br /> Pvradastic Agglameme 6reccia Tuff <br /> •C—St.masers-od b.ecr.n.may pros nt a ride emge of m,.values depending on the runue of the <br /> eememing mat—al and the degree of cememat ft.so they may range diem s aloes similar to sandstam to <br /> s-aloes used£dine game d sediments. <br /> •"These salves aze f—t-ct rock specimens testedmmtal to bedding or fa4atiaa.The-1-of. wiD be <br /> sigsd-scantly differentiffftas acnus along awea1ztess plane, <br /> Figure 5: Values of constant mi for intact rock by rock group (Hoek, 2000) <br /> May 2023 20 <br />