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Tonia Perkins
<br />July 31, 2024
<br />Page 25
<br />Agapito Associates, Inc.
<br />Table 2. In Situ Properties from Agapito (2016) Study, which served as the Basis for
<br />FLAC3D Overburden and Interburden Properties
<br />Table 3. Material Properties applied to the FLAC3D Model
<br />Unit Thickness
<br />(ft)Density (pcf)Youngs Mod
<br />(psf)Poisson Cohesion
<br />(psf)
<br />Friction
<br />angle Tensile (psf)
<br />ML UR Mudstone 6.8 147.8 74,880,000 0.39 68,688 36.8 32,400
<br />ML UR Sandstone 3.1 138.3 108,000,000 0.34 38,160 35.5 17,424
<br />ML IR Mudstone 15.1 147.8 74,880,000 0.39 64,512 38.8 32,400
<br />ML IR Carbonaceous Shale 0.5 109.6 24,480,000 0.35 12,240 15.7 3,456
<br />Main L Seam 7 81.8 43,200,000 0.35 31,824 25 11,030
<br />ML IF Carbonaceous Shale 1.6 109.6 24,480,000 0.35 21,312 27.9 7,920
<br />ML IF Mudstone 1.3 147.8 74,880,000 0.39 49,536 35.4 22,464
<br />ML IF Siltstone 1.7 150.4 97,920,000 0.36 29,952 37.5 14,400
<br />ML IF Coal 2 92 43,200,000 0.35 37,440 25 25,920
<br />ML IF Carbonaceous Shale 0.5 109.6 24,480,000 0.35 25,344 20.7 7,920
<br />M IR Mudstone 22.5 147.8 74,880,000 0.39 52,272 35.8 24,048
<br />M IR Carbonaceous Shale 0.4 109.6 24,480,000 0.35 20,448 29.5 7,920
<br />M Seam 5 79.4 33,120,000 0.35 31,824 25 11,030
<br />M IF Carbonaceous Shale 0.6 109.6 24,480,000 0.35 46,080 25.1 15,984
<br />M IF Mudstone 4.5 147.8 74,880,000 0.39 74,880 39.3 38,160
<br />M IF Sandstone 3 138.3 108,000,000 0.34 30,384 42.9 17,424
<br />UQ MR Mudstone 1 147.8 74,880,000 0.39 78,480 37.7 38,160
<br />UQ MR Sandstone 2.4 138.3 108,000,000 0.34 32,544 40.8 17,424
<br />UQ IR Mudstone 7.9 147.8 74,880,000 0.39 73,008 39.2 37,152
<br />UQ IR Carbonaceous Shale 0.6 109.6 24,480,000 0.35 26,784 28.4 10,080
<br />UQ 1.7 80.8 40,320,000 0.35 35,280 25 12,240
<br />Carb Shale 1.1 109.6 24,480,000 0.35 29,664 28.3 11,088
<br />MQ 7 82.3 36,000,000 0.35 35,280 25 12,240
<br />MQ IF Carbonaceous Shale 1.3 109.6 24,480,000 0.35 23,616 19.6 7,200
<br />MQ IF Mudstone 4.2 147.8 74,880,000 0.39 22,752 31.1 9,216
<br />MQ IF Sandstone 0.7 138.3 108,000,000 0.34 30,816 42.5 17,424
<br />MQ IF Mudstone 13.7 147.8 74,880,000 0.39 22,752 31.1 9,216
<br />MQ IF Sandstone 9 138.3 108,000,000 0.34 30,816 42.5 17,424
<br />Domain Density
<br />(lb/ft3)
<br />Young’s
<br />Modulus
<br />(ksi)
<br />Poisson Ratio Friction Angle
<br />(degree)
<br />Cohesion
<br />(psi)
<br />Tensile
<br />Strength (psi)
<br />Dilation Angle
<br />(degree)
<br />Fill 110 22 0.2 38 0.7 0 0
<br />Shale 5 145.9 541 0.38 37.5 426 208 4.2
<br />L seam 81.8 300 0.35 25 221 77 4.2
<br />Shale 4 141 485 0.38 34.5 329 154 4.2
<br />M seam 79.4 230 0.35 25 221 77 4.2
<br />Shale 3 143.1 563 0.37 39.3 419 213 4.2
<br />Q seam 85.1 246 0.35 25 240 84 4.2
<br />Shale 2 142.9 581 0.37 34.9 177 83 4.2
<br />R seam 85.1 246 0.35 25 240 84 4.2
<br />Shale 1 142.9 581 0.37 34.9 177 83 4.2
<br />*Note: the FLAC3D Model is constructed in units of pounds per feet. For this reason, plots of stresses are in units of pounds per
<br />square foot (lb/ft³ or psf), and plots of displacement are presented in units of feet.
<br />*ksi=one thousand pounds per square inch
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