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2017-03-29_REPORT - C1982056
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2017-03-29_REPORT - C1982056
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Last modified
4/10/2017 11:25:57 AM
Creation date
4/5/2017 6:30:24 AM
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Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Report
Doc Date
3/29/2017
Doc Name
Quarterly Subsidence Monitoring Report
From
Twentymile Coal, LLC
To
DRMS
Permit Index Doc Type
Subsidence Report
Email Name
TNL
DIH
Media Type
D
Archive
No
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sets (S5, S6 and S7) were not included in the <br />analysis, because their low frequency indicated that <br />they would not significantly influence block size. A <br />Terzaghi Correction (Terzaghi, 1965) was applied to <br />the discontinuity spacing field data to convert the <br />apparent spacing to true spacing. The apparent and <br />corrected spacing for each discontinuity set are <br />summarized in Table 1. <br />Figure 1 Layout of the study area and mitigation measures <br />100 <br />80 <br />60 <br />w <br />40 <br />20 <br />U 0 <br />U <br />Figure 2: Block Volume Distribution <br />- <br />- ———————————————————————————————— <br />O 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <br />Block Volume (cubic feet) <br />Boulder Survey Data --41--Scanline Data <br />
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