Laserfiche WebLink
PROJECT: FLOW FROM GLOBE HILL MINE TO SCHIST ISLAND MINE DATE: 9/5/2008 <br />AUTHOR: Adrian Brown, P.E. PAGE: 2 OF 4 <br />ANALYSIS <br />Isotropic Hydraulic Conductivity <br />Fvalllatinn iC fnr the fill rnnnn of havrlr-Jin .......1....46.:+ . t..- ab._ r_1:_-. a <br />• <br /> <br />Vertical Hydraulic conductive of rock ft/ r 1 10 100 1000 <br />Horizontal hydraulic conductive of rock ft/ r <br />E 1 10 100 1000 <br />Anisotropy Kh/Kv ratio 1 1 -11 It <br />Cemnute water rlanth in Rlnho 41111 <br />Catchment area of Globe Hill Mine s .ft. 3537709 3537709 3537709 3537709 <br />Area of base of mine s .ft. 159736 159736 159736 159736 <br />Precipitation event assumed 24 hr max in 12 12 12 12 <br />Volume of water to Globe Hill Mine cult 3537709 3537709 3537709 3537709 <br />Runoff coefficient % 100% 100% 100% 100% <br />Depth of water in mine floor It 22.1 22.1 22.1 22.1 <br />Elevation of Globe Hill mine floor <br />I ft 9865 9865 9865 9865 <br />Maximum Elevation of water in GH mine floor ft msl 9887 9887 9887 9887 <br />Compute lateral flow from Globe Hill to east <br />Lateral flow assumed in a strip of rock between the top of the water in GH and the top of backfill in SI. <br />Flow section width equals inundated Globe Hill Mine floor normal to the flow direction. <br />Flow is computed from Darcy's Law: <br />Q = Kh I A Kh = hvrlraulin nnneli intivih. <br />Horizontal hydraulic conductive Kh ft/ r 1 v 10 y v 100 v. 1000 <br />Maximum Elevation of water in GH mine floor ft msl 9887 9887 9887 9887 <br />Elevation of backfilled Schist Island Mine ft msl 9795 9795 9795 9795 <br />Head loss from GH pool to SI backfill max It 92.1 92.1 92.1 92.1 <br />Distance from GH pool to SI wall fr. CAD ft 928 928 928 928 <br />Hydraulic gradient I ft/ft 0.099 0.099 0.099 0.099 <br />Depth of lateral flow rock section ft 92.1 92.1 92.1 92.1 <br />Width of lateral flow in rock from CAD It 590 590 590 590 <br />Cross sectional area of flow GH>SI A s .ft. 54367 54367 54367 54367 <br />Lateral flow from GH towards SI max cult/ r 5398 53984 539844 5398443 <br />Igpm 0.08 0.77 7.68 76.83 <br />Compute vertical loss of flow during transit from Globe Hill towards Schist Island <br />Diatreme is unsaturated for approximately 3000 feet below GI and SI area <br />Any water entering the bedrock in this area is subject to vertical flow under gravity <br />Flow is computed from Darcy's Law <br />O = Kv I A Kv = hvilrm din rrnnrluntivihi : - L....dr....::......d:--4 n <br />Vertical hydraulic conductive Kv ft/ r 1 10 100 1000 <br />Vertical hydraulic gradient 1 ft/ft 1 11' 1 1 <br />Distance from GH pool to SI wall fr. CAD It 928 928 928 928 <br />Width of lateral flow in rock from CAD ft 590 590 590 590 <br />Cross sectional area of flow GH>SI A s .ft. 547520 547520 547520 547520 <br />Vertical flow loss from GH to SI cuft/ r 547520 5475200 54752000 547520000 <br /> m 8 78 779 7792 <br />Evaluate lateral flnw to Al frnm (41 <br />Flow from SI to GH m 0.0 0.0 0.0 0.0 <br />Distance of penetration towards SI from GH ft 9.1 9.1 <br />1 9.1 9.1 <br />Percentage of total distance GH-SI covered % 1 % 1% 1 % 1 % <br />Adrian Brown Consultants, Inc., 130 West Fourth Avenue, Denver, Colorado 303-698-9080