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<br />ROCKY MOUNTAIN
<br />GEOTECHNICAL, INC.
<br />4965 NORTH 30TH STREET • COLORADO SPRINGS, CO 80919 • 590 -SOIL (7645)
<br />orawn
<br />_�fA{
<br />wt.
<br />Bull
<br />Onto
<br />BEAR MINE No.3
<br />BEAR COAL COMI�ANY
<br />,SIGN GEOLOGIC
<br />COLUMN
<br />Job No.
<br />Fig. No.
<br />B-2
<br />em a; L
<br />ELEV.
<br />SYMBOL DEPTH
<br />ROCK
<br />FORMATION DESCRIPTION
<br />FORMATION 1 - INTERBEDDED SANDSTONE, SILTSTONE
<br />- -- -=
<br />AND SH E
<br />--- ---
<br />TYPICAL STRENGTH PARAMETERS, 0 =36, C -90 psi;
<br />7800'
<br />CONSERVATIVE STRENGTH PARAMETERS, A =32, C =90 psi;
<br />UNIT WEIGHT =150 pcf
<br />»
<br />100
<br />7700'
<br />- - - -_-
<br />1
<br />' 1•_ ....
<br />_ = 200
<br />7600'
<br />»3» 7 E
<br />FORMATION 2 - SANDSTONE
<br />TYPICAL STRENGTH PARAMETERS, 0 =42, C =88 psi;
<br />.::w -::::i
<br />CONSERVATIVE STRENGTH PARAMETERS, 0=40, C =66 psi;
<br />{ ?;`?tt``'iiiiii 300
<br />2
<br />UNIT WEIGHT =147 pcf
<br />.....:
<br />:t:
<br />'.
<br />7500'
<br />FORMATION 3 - INTERBEDDED SANDSTONE, SILTSTONE
<br />AND SHALE
<br />TYPICAL STRENGTH PARAMETERS, 0 =36, C =90 psi;
<br />CONSERVATIVE STRENGTH PARAMETERS, 13 =32, C =90 psi;
<br />UNIT WEIGHT =150 pcf; C,=9460 psi;
<br />E =.5 x 10 psi; V =.19; T.=131 psi
<br />3
<br />....................... 400
<br />7406
<br />3t�:�1Uil
<br />:r.:r
<br />FORMATION 4 - SANDSTUNE
<br />?•ii::.iK::;FO °?:::
<br />TYPICAL STRENGTH PARAMETERS 42 C =88 si •
<br />6 = P
<br />CONSERVATIVE STRENGTH PARAMETERS, 0 =40, C =66 psi;
<br />?�
<br />4
<br />UNIT WEIGHT =147 pcf; C.=11270 psi;
<br />iii
<br />E =1 x 10 psi; v =.3; T,=711 psi;
<br />•ie::�:•:::::::::
<br />:•i »::. ?: Soo
<br />MODULUS OF RUPTURE =1369 psi
<br />7300'
<br />-------
<br />�____-
<br />FORMATION 5 - SHALE
<br />5
<br />TYPICAL STRENGTH PARAMETERS, 0 =34, C =84 psi;
<br />-- - _-
<br />CONSERVATIVE STR37GTE FARAMEIERS, 6 =27, C =40 psi;
<br />- - -- -
<br />UNIT WEIGHT =156 pcf
<br />600
<br />7200'
<br />FORMATION 6 - SANDSTONE
<br />`••`•.`'`'
<br />.. ......
<br />TYPICAL STRENGTH PARAMETERS, 0=41, C =83 psi;
<br />a »: ""`•
<br />CONSERVATIVE STRENGTH PARAMETERS, 0 =36, C =52 psi;
<br />UNIT WEIGHT =147 pcf; C, =10518 psi;
<br />E =1 x 10 psi; v =.22; T. =545 psi;
<br />MODULUS OF RUPTURE =894 psi
<br />700
<br />7100'
<br />6
<br />"iii 60
<br />7000'
<br />'
<br />i......
<br />900
<br />FORMATION 7 - INTERBEDDED SANDSTONE, SILTSTONE
<br />__
<br />AND SHALE
<br />_ -� ___
<br />TYPICAL STRENGTH PARAMETERS, 0 =36, C -88 psi;
<br />-- --
<br />CONSERVATIVE STRENGTH PARAMETERS, 0=32, C =68 psi;
<br />6900'
<br />?'? ?i "t•
<br />UNIT WEIGHT =150 pcf; C, =9250 psi;
<br />iE ?iiii ? » »? ?:?iii.: ?.
<br />E =.84 x 10 psi; v =.23; T, =634 psi;
<br />41.
<br />MODULUS OF RUPTURE =688 psi
<br />. ..x..-
<br />1000
<br />........................ lf ?I ?lll
<br />6800
<br />__
<br />FORMATION 8 - SANDSTONE
<br />TYPICAL STRENGTH PARAMETERS, 6 -41, C =110 psi;
<br />;;
<br />CONSERVATIVE STRENGTH PARAMETERS, 6 =38, C =62 psi;
<br />t` "' "`ii
<br />II� If
<br />UNIT WEIGHT =155 pcf; C, =13998 psi;
<br />E =3.91 x 10 psi; v =.18; T, =1209 psi
<br />_ ___=
<br />gORMATION 9 - F SEAM COAL
<br />_-- _ --
<br />TYPICAL STRENGTH PARAMETERS, 0 =28, C =25 psi;
<br />_ =____- 1100
<br />CONSERVATIVE STRENGTH PARAMETERS, pS =24, C =18 psi;
<br />;tom „,
<br />UNIT WEIGHT =80 pcf; C, =2697 psi;
<br />?i ? ? ?:
<br />8
<br />E=.35 x 10 psi; T,=137 psi
<br />:i::i ?..
<br />6700'
<br />:? ..::.....iiii ?ii
<br />... ^
<br />FORMATION 10 - INTERBEDDED SANDSTONE, SILTSTONE,
<br />9
<br />AND SHALE
<br />TYPICAL STRENGTH PARAMETERS, 6 =39, C =120 psi
<br />CONSERVATIVE STRENGTH PARAMETERS, 0 -31, C =56 psi;
<br />I.I.......I..J•I.
<br />I
<br />UNIT WEIGHT =157 pcf; C. =12458 psi;
<br />E =2.8 x 10 psi; v =.08; T, =1507 psi
<br />»?::
<br />FORMATION 11 - E SEAM COAL
<br />........... ?t?.
<br />^• °• : ::: lzoo
<br />TYPICAL STRENGTH PARAMETERS 0=28, C =30 psi-,
<br />t
<br />10
<br />CONSERVATIVE STRENGTH PARAMETERS, 0=25, C =21 psi;
<br />1llltCll__��t_
<br />UNIT WEIGHT =80 pcf; C, =3169 psi;
<br />E =.42 x 10 psi; T,=327 psi
<br />6600'
<br />- - -
<br />_- -_- -
<br />FORMATION 12.- INTERBEDDED SANDSTONE, SILTSTONE,
<br />_
<br />-
<br />AND SHALE
<br />_
<br />_:- -irn..
<br />TYPICAL STRENGTH PARAMETERS, 0 =42, C =145 psi
<br />r........:•:::..
<br />rt '"
<br />CONSERVATIVE STRENGTH PARAMETERS, 0 =40, C =143 psi;
<br />3a»i
<br />ii?
<br />UNIT WEIGHT =161 pcf; C, =15270 psi;
<br />II
<br />E =2.92 x 10 psi; T, =802 psi
<br />1300
<br />FORMATION 13 - D SEAM COAL
<br />12
<br />TYPICAL STRENGTH PARAMETERS, 6 =28, C =23 psi;
<br />CONSERVATIVE STRENGTH PARAMETERS, 0 =24, C =18 psi;
<br />--- _ - - -_-
<br />UNIT WEIGHT =80 pcf; C, =2460 psi;
<br />6500'
<br />=13
<br />E =.37 x 10 psi; %=210 psi
<br />14
<br />FORMATION 14 - SHALL
<br />h
<br />d y!N=
<br />iiir.: °:e'::::
<br />TYPICAL STRENGTH PARAMETERS, 0=34, C-84 psi;
<br />N sa o
<br />CONSERVATIVE STRENGTH PARAMETERS, 0 =27, C -40 psi;
<br />JUN d4
<br />..
<br />�Iw
<br />a = 3
<br />UNIT WEIGHT =156 pcf
<br />1980
<br />�
<br />� ai clod m°
<br />OI 3i o '•
<br />o' '
<br />: :::p ::::::::::.....
<br />15
<br />FORMATION 15 - SANDSTONE
<br />r x 13
<br />;
<br />g;
<br />E °i ?.............. l40
<br />:ii ? ?ri? ?i ?i ? ? ? ? ?z?
<br />TYPICAL STRENGTH PARAMETERS, j6=41, C =88 psi
<br />n
<br />pj o! ins '
<br />.................
<br />CONSERVATIVE STRENGTH PARAMETERS, 6 =27, C =40 psi;
<br />--"" " "•
<br />UNIT WEIGHT =139 pcf; C. =11250 psi;
<br />3;
<br />°
<br />?::: ?:::::::
<br />its i? iii00.
<br />E =2.83 x 10 psi; T, =830 psi
<br />I
<br />6400'
<br />.....:...........
<br />°
<br />3 1
<br />.....................
<br />FORMATION 16 - INTERBEDDED SANDSTONE, SILTSTONE,
<br />i f
<br />AND SHALE
<br />TYPICAL STRENGTH PARAMETERS, 0 =31, C -79 psi
<br />ETH L.
<br />___ _ - -_
<br />CONSERVATIVE STRENGTH PARAMETERS, 0 =31, C -56 psi;
<br />114;� ��srEV;�i
<br />16
<br />UNIT WEIGHT =150 pcf; C.-8270 psi;
<br />P
<br />E =1.83 x 10 psi; T, =255 psi
<br /># a149 _
<br />F
<br />500
<br />FORMATION 17 - C SEAM COAL
<br />LP•,F� Ss ;•
<br />TYPICAL STRENGTH PARAMETERS, 0 =28, C =23 psi;
<br />yT
<br />t•.' �lNe•;•P
<br />CONSERVATIVE STRENGTH PARAMETERS, 0 -20, C =11 psi;
<br />FOF�OiOP
<br />17
<br />UNIT WEIGHT-82 pcf; C. =2440 psi;
<br />6300
<br />� - �__-
<br />E= 89 x 10 psi; T,=255 psi
<br />FORMATION 18 - INTERBEDDED SANDSTONE, SILTSTONE,
<br />18
<br />AND SHALE
<br />TYPICAL STRENGTH PARAMETERS, J6 =36, C =115 psi
<br />-- _- _ -_ -_ -_
<br />CONSERVATIVE STRENGTH PARAMETERS, 0 =30, C =50 psi;
<br />UNIT WEIGHT =147 pcf; C,=8548 psi;
<br />E =1.76 x 10 psi; =1055 psi
<br />ROCKY MOUNTAIN
<br />GEOTECHNICAL, INC.
<br />4965 NORTH 30TH STREET • COLORADO SPRINGS, CO 80919 • 590 -SOIL (7645)
<br />orawn
<br />_�fA{
<br />wt.
<br />Bull
<br />Onto
<br />BEAR MINE No.3
<br />BEAR COAL COMI�ANY
<br />,SIGN GEOLOGIC
<br />COLUMN
<br />Job No.
<br />Fig. No.
<br />B-2
<br />em a; L
<br />
|