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PERMFILE40335
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PERMFILE40335
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Entry Properties
Last modified
8/24/2016 10:43:18 PM
Creation date
11/20/2007 10:17:11 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Permit File
Doc Date
1/27/2003
Doc Name
Predicted D Seam Longwall Subsidence Report 2/26/03
Section_Exhibit Name
Exhibit 2.05-E8 Part 6
Media Type
D
Archive
No
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,• <br />'• <br />L• <br />Elk Creek Mine Subsidence Page 42 February 26, 2003 <br />Table 6. Average stress and predicted surface subsidence over <br />failed Panel Group 2 gateroad pillars. <br />INPUT: Pillar width - 50-ft; pillar height - 9.5-ft; pillar length <br />- 180-ft; entry and crosscut width - 20-ft; pillars <br />restrained on cave side; percent gateroad extraction - <br />25.0$; overburden density - 151 PCF <br />Local Average Lax Local <br />Panel Pillar Times Maximum <br />Depth Stress Pillar S urface <br /> Lax Ht/Wd Subsidence <br />(ft) (m) (Mpa) (osi) (MPa) (~) (ft) <br /> <br />1300 396 12.42 1800 2.36 14.53 1.38 <br />1900 427 13.37 1939 2.54 15.59 1.48 <br />1500 957 14.33 2077 2.72 16.55 1.57 <br />1600 988 15.28 2216 2.90 17.56 1.67 <br />1700 518 16.29 2354 3.08 18.57 1.76 <br />1800 549 17.19 2493 3.27 19.58 1.86 <br />1900 579 18.15 2631 3.45 20.59 1.96 <br />2000 610 19.10 2770 3.63 21.60 2.05 <br />2100 640 20.06 2908 3.81 22.62 2.15 <br />2200 671 21.01 3097 3.99 23.63 2.24 <br />2300 701 21.97 3185 4.17 24.64 2.39 <br />2400 732 22.92 3329 4.34 25.65 2.93 <br />2500 762 23.88 3462 4.54 26.66 2.53 <br />2600 792 24.83 3600 4.72 27.67 2.63 <br />2700 823 25.79 3739 4.90 28.68 2.72 <br />2800 653 26.74 3877 5.08 29.69 2.82 <br />-42- <br />
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