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Table 1 : Approdinate telstionlibip between rock inns quality and matuiel constants <br /> Disturbed rock man m and a vsltaes endisturbed rock mass m and a vaiuea <br /> J <br /> W Y <br /> V N OC V a Y <br /> EMPtRICAI FAILURE CRITERION "y� Q > Y # y v <br /> T YID W 0 -0 z Y 4 <br /> f ';Z T aor G ,y • a <br /> o't=major principal elfactwe stress �Y[ � I 'A N } a 0 <br /> ors- minor principal dEettiw stress Q <br /> O a -a E- <br /> or =uniaxial compressive strength pit } V Q i y z 2 uJ <br /> k ' y <br /> of intset rock.and ua p z s <br /> m and a am empirical constants. < p - E W V `� b° '4 Y <br /> fpr � <br /> _ <br /> � <br /> W ` & W i7 W 4 W <br /> oWc F �, = z 0 € <br /> INTACT ROCK SAMPLES <br /> Laboratory sire speeimeni fray m 7.D0 10.00 15.00 17,00 25.00 <br /> from dkcoarkwities = s 1.00 140 1.00 1.00 1.00 <br /> CSIR rating_ RMR=100 m 7.00 10.00 15.00 17.00 2S.00 <br /> NGI rating: Q-500 a 1.00 1100 1.00 1.00 1.00 <br /> VERY GOOD QUALITY ROCK MASS <br /> T ghtty lnterbckir>j undisturbed rock nt 2AG 3.43 5.14 S.82 8.56 <br /> with wnweathered joints at I to 3m. a 0.002 0.092 0,082 0.082 0 082 <br /> CSIR rating: RMR-85 m 4.10 5.8$ 8.78 9.05 14.63 <br /> NGI rating: Q-100 a 0.189 0.189 0,109 0.189 0199 <br /> GOOD QUALITY ROCK MASS <br /> Fresh to s4hty weathered rock Aghty m 0.575 0.021 1.231 1 395 2.052 <br /> disturbed with joints at I to 3m. s 0,00293 0.00293 4.00293 O.D0293 0,00293 <br /> CSIR rating: RMR=6S m 2.006 2.865 C298 4 872 7.163 <br /> NGI rating: Q=10 a 0.0205 0.0205 0.0205 00205 0.0205 <br /> FAIR QUALITY ROCK MASS <br /> Values for Morrison <br /> Saw n <br /> raI sets of mwdetey weethw+ed m 0.129 0.183 0.275 0.311 D.458 <br /> Quarry: <br /> joints spaced at 0.3 to lm. s O.D0009 0.000" 0.D0009 0,00009 0.000" <br /> CSIR rating: RMR=44 0 0.947 1.353 2030 2.301 3.383 RMR=30 to 55% <br /> NGI rating: Q=1 a 0.00190 0.00198 0.00198 000198 0.W198 <br /> Q-System= 1.7 to 16.7 <br /> POOR QUALITY ROCK MASS Selected Hoek-Brown <br /> Numerous westhwidjoints at X-5110mm, m 0.029 0.041 0.061 0.069 0 102 Constants: <br /> some gouge. Ckan compactd rwste rock s 0,000003 0.000DO3 0.000003 0000003 G.000003 Rock Mass(LocaUGlobal) <br /> CSIR rating: RMR=23 m OW7 0.639 0.950 1 087 1.598 <br /> NGI rating- Q-0,1 a 0.00019 0.00019 0.00019 0.00019 0 00019 rrr6=0.39 to <br /> s=4.5E-5 too 0.0.0013 <br /> VERY POOR QUALITY ROCK MASS a=0.51 <br /> Numerous heavily weatherad joints spaced T 0.007 0.010 0.015 0.017 0 025 <br /> <50mm with gouv. Wiste rock with fines. s 0.0M01 O-ODWO01 0.0000001 0.000D001 0 000001 Sillimanitic Gneiss <br /> CSIR rating; RMR=3 In 0 219 0.313 0.469 0.532 0 782 mb=0.221 <br /> NGI rating: Q-0.01 a 0.00002 0.00002 0.00002 0.00002 000002 s=0.0000197 <br /> a=0.52 <br /> Figure 5-4. Excerpt from Hoek-Brown (1988) where rock mass parameters are compared <br /> using the different methods discussed in this section. The inset on the right summarizes the <br /> input parameters selected for Morrison Quarry. <br /> 24 <br /> Aggregate Industries-Morrison Quarry GEI Consultants, Inc. <br /> AM-07 Geotechnical Stability Exhibit November 2020 <br />