Laserfiche WebLink
Geotechnical Stability Exhibit <br /> Engineering Evaluation of Highwall Design for the South Quarry of the Morrison Quarry <br /> Table 4—Summary of Recent UCS Testing <br /> Depth <br /> Unconfined Poisson's Young's <br /> Boring (ft ) Rock Type Compressive Ratio Modulus <br /> Strength (psi) (psi) <br /> HDR-002 18.0-18.5 Granitic Gneiss 7764 0.051 2880000 <br /> HDR-002 18.0-18.5 Granitic Gneiss 6010 0.053 2270000 <br /> HDR-002 105.5-115.0 Talc Gneiss 9478 0.01 5090000 <br /> HDR-002 253.5-254.0 Granitic Gneiss 10966 0.051 5750000 <br /> HDR-002 258.0-258.5 Granitic Gneiss 18298 0.05 11000000 <br /> HDR-002 295.2-295.7 Qtz Pegmatite 4537 0.141 4160000 <br /> HDR-002 297.2-297.7 Qtz Pegmatite 6975 0.061 4330000 <br /> HDR-002 345.7-346.3 Granitic Gneiss 2360 0.162 1120000 <br /> HDR-002 348.0-348.5 Granitic Gneiss 5982 0.122 2050000 <br /> HDR-003 54.5-55.0 Granitic Gneiss 5646 0.007 1030000 <br /> HDR-003 52.0-52.5 Granitic Gneiss 5079 0.079 2110000 <br /> HDR-003 130.4-130.9 Granitic Gneiss 6379 0.012 3230000 <br /> HDR-003 132.5-133.0 Granitic Gneiss 5272 0.023 2570000 <br /> HDR-003 187.0-187.5 Granitic Gneiss 8967 0.479 3230000 <br /> HDR-003 191.0-191.5 Granitic Gneiss 21420 0.039 18660000 <br /> HDR-003 281.6-282.1 Talc Gneiss 9735 0.044 4920000 <br /> HDR-004 65.2-65.6 Granitic Gneiss 14814 0.071 6100000 <br /> HDR-004 158-158.5 Talc Gneiss 4142 0.055 810000 <br /> HDR-004 160.6-161.0 Granitic Gneiss 7720 0.103 2950000 <br /> HDR-004 381.0-381.6 Hornblende Schist 16440 0.123 6640000 <br /> HDR-004 385.5-386.0 Quartz 24336 0.211 15210000 <br /> HDR-005 58.3-58.8 Talc Gneiss 5997 0.038 750000 <br /> HDR-005 63.5-64.0 Talc Gneiss 7232 0.034 1720000 <br /> HDR-005 111.5-111.9 Hornblende Schist 15532 0.454 10340000 <br /> HDR-005 115.5-116.0 Granitic Gneiss 9134 0.151 7690000 <br /> HDR-005 186.0-186.5 Granitic Gneiss 8653 0.06 3580000 <br /> HDR-005 262.3-262.8 Granitic Gneiss 8284 0.023 2180000 <br /> HDR-005 263.2-263.7 Quartz 11650 0.082 7450000 <br /> In areas of lower Rock Quality Designation (RQD) material, where UCS testing was not feasible, <br /> Point Load testing in accordance with ASTM D5731 was performed. A total of two (2) sample <br /> locations were analyzed, for a total of 20 specimens. The results of the testing is summarized <br /> below. <br /> May 2023 1 13 <br />