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REP18833
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REP18833
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Last modified
8/24/2016 11:47:39 PM
Creation date
11/27/2007 2:29:30 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Report
Doc Date
9/2/1997
Doc Name
PREDICTED LONGWALL SUBSIDENCE FOR THE SANBORN CRK MINE OXBOW CARBON MINERALS INC SOMERSET CO
Permit Index Doc Type
SUBSIDENCE REPORT
Media Type
D
Archive
No
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Sanborn Creek Subsidence Page 26 September 2, 1997 <br />Table 6. Maximum surface subsidence predictions over gateroad <br />pillars between longwall panels as the results of crushing and <br />failure. <br />Panel Local Gateroad Local Average Local <br />Ident Panel Area Percent Pillar Maximum <br /> Depth Support Extraction Stress Surface <br /> Width Lam„ Subsidence <br /> (ft) (m) (ft) MPa ($) (ft) <br /> <br />#2 & 2210 674 695 90.9$ 165 98.3 9.11 <br />#3 23900psi <br /> 2000 610 199 47.1 4.00 <br /> 21600psi <br /> 1525 465 119 93.9 3.73 <br /> 16500psi <br />#3 & 2255 687 660 69.9$ 195 46.8 3.96 <br />#4 21000psi <br /> 2000 610 129 45.9 3.86 <br /> 18700psi <br /> 1500 457 106 93.0 3.66 <br /> 15900psi <br /> 1375 419 89 40.9 3.98 <br /> 12900psi <br />#5 6 2160 658 700 90.5$ 163 48.2 4.09 <br />#6 23600psi <br /> 2000 610 151 47.2 9.02 <br /> 21900psi <br /> 1500 457 113 43.7 3.72 <br /> 16900psi <br /> 1930 435 108 93.2 3.67 <br /> 15600psi <br />26 <br />
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