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2021-02-05_PERMIT FILE - C1980007A (5)
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2021-02-05_PERMIT FILE - C1980007A (5)
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Last modified
10/6/2022 8:32:15 PM
Creation date
2/23/2021 11:01:07 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1980007A
IBM Index Class Name
Permit File
Doc Date
2/5/2021
Doc Name
SUBSIDENCE EVALUATION
Section_Exhibit Name
Exhibit 60E Subsidence Evaluation for the South of Divide and Dry Fork Mining Areas
Media Type
D
Archive
Yes
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e f <br /> ---------------------- <br /> g ENLARGEMENT 2 h <br /> Curvature: <br /> - Convex Upward Tension <br /> - Concave Upward Compression <br /> a PD <br /> J <br /> J <br /> J <br /> o�OOJQ OV <br /> ogoa�� a CD <br /> c ENLARGEMENT I d <br /> `Tear Surface 11 e f <br /> Zone ---------------- ----- <br /> h <br /> Eontunuouts <br /> u�eformation <br /> Zone <br /> b <br /> Fractured <br /> Zone <br /> Caved <br /> C dI <br /> Figure 2. Conceptual diagram showing subsidence processes shortly after longwall mining <br /> (dynamic state). Enlargement shows some possible water flow directions in the fractured zone <br /> along fractures and separated bedding planes within the fractured zone. Enlargement 2 shows <br /> deflections of material in the near-surface and continuous-deformation zones and resulting tilt, <br /> curvature, and strain. <br />
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