2008-11-24_PERMIT FILE - C1996083A ‎(15)‎

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 11/24/2008
• Section_Exhibit Name: Exhibit 15 Subsidence Prediction
• Media Type: D
• Archive: Yes

EXHIBIT 15
TABLE OF CONTENTS -SUBSIDENCE PREDICTION
PAGE
1.0 SUBSIDENCE PREDICTION ...................................... 1
1.1 BACKGROUND OF PREDICTIONS ............................ 1
Subsidence Engineer's Handbook (SEC) ........................ 1
Empirical Equations ........................................ 2
1.2 MINING SCHEDULE AND RATE OF SUBSIDENCE ................ 3
1.3 SUBSIDENCE MAGNITUDE AND PROFILE ..................... 5
Subsidence Magnitude ...................................... 5
Maximum Subsidence Over Mined Areas ........................ 6
r 1
L_J

1.4
1.5
1.6
Subsidence Profile
nan~nr nnir_i Fc
......................................... 6
BREAK ANGLES .........................................
ZONES OF POTENTIAL FRACTURING ...................... .
1.7 ZONES ALONG OUTCROP BARRIER PILLAR ................. .
Chimney Collapse Prediction ............................... .
Rockfall .................................................
1.8 POSSIBLE SUBSIDENCE IMPLICATIONS OF FAULTS .......... .
1.9 LONG TERM PILLAR STABILITY ........................... .
9
10
10
12
13
15i
16
18
2.0 SUBSIDENCE IMPACTS .......................................... 19
2.1 LAND USE .............................................. 19
2.2 SURFACE WATER ........................................ 19
2.3 GROUND WATER ........................................ 21
2.4 BUILDING AND STRUCTURES .............................. 24
Criteria for Evaluating Impacts to Buildings and Structures ......... 24
Buildings ................................................ 26
Power Lines ............................................. 26
Reservoirs ............................................... 26
Pipelines ................................................ 26
Roads .................................................. 26
Bridges ................................................. 26
Stockponds .............................................. 26
2.5 LANDSLIDES ............................................ 27
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