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<br />1 <br /> <br />1 <br />1 <br /> <br />1 <br /> <br />1 <br /> <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br /> <br />1 <br />156 <br />FALLING HEAD TEST Test N° Date Project <br />SANTP FE - EOLIPN Engineer R gEN50N Borehole 1 <br />Borehole co-ordinates 213450N,20464e~E Collor elevation 8600 FT. <br />Depth to top of test section //5') 35• I m Length of test section, L Z~) IZ°$ m <br />Depth of static water level, Hw(I~.) 5•Z m Radius of borehole, I.g9•~,py~g m <br />Excess head, he 1~• $•?, m Radius of slandpiDe or casing rc.o~m <br />Time,T (min) Q 21 39 43 48 <br />Depth to f~ <br />water, hw (m) O <br />o •33 <br />.10 .50 <br />.15 1.5 <br />•4/v 2. <br />- <br />Excess head , <br />ht=Hw-hw ImI <br />SZ <br />5•I <br />5.O <br />y.7- <br />y.y <br />n, / ne t.o .98 .9- ~91 •8 <br />Head -time graph (slope of groDh is S 1 <br /> <br /> <br />O.B <br /> <br /> <br />0 <br />.6 <br /> <br /> <br />4 <br />0 <br />. <br />0 <br />3 <br />. <br />h <br />0 <br />2 <br />~ <br />. <br />he <br /> <br /> <br /> <br />0.1 <br /> <br /> <br /> <br />0.08 <br /> <br /> <br />0 <br />6 <br />0. <br /> <br /> <br /> <br />o.oao to 30 3e ~!o ~m 60 <br />Time -minutes <br />1=0 Casing f= t Calculations r2 <br />•h <br />w <br />he <br />L <br /> <br /> <br />he~ Hw <br />Fiw hw <br />s.w.~ ht <br />L <br /> <br /> <br />- hw ht -H <br />Fi <br />sw.L <br /> <br /> <br /> <br />hw Permeability k =0.1335 (~) m/sec. <br /> <br />5= Cl.o-.9}) ~ (39-0) _ ~ b00 <br />f'c v • OZS rrL <br />`= l2.Sm .q <br />K.5.dxro rl(sec <br />= 5.O SCI O~~~ml52+C. <br />it 2FT.5TICK'~P <br />Fig B-3 - Proforma for falling head test. <br /> <br />