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REP40765
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REP40765
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Entry Properties
Last modified
8/25/2016 12:39:39 AM
Creation date
11/27/2007 8:50:12 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Report
Doc Name
REPORT ON RECOMMENDATIONS FOR DESIGN OF WASTE DUMPS
Permit Index Doc Type
Waste Pile/Fill Report
Media Type
D
Archive
No
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<br />5) Determination of the minimum safe distance between the toe of <br />the waste dump and the edge of the top of the pit slope. <br />' 6) Analysis of the stability of the spoil bank with a dragline atop <br />it. <br />' 7) Evaluation of the results of the analyses and preparation of this <br />report. <br />1 <br />D. RELATED REPORTS <br />Reference is made herein to the W. A. Wahler and Associates report entitled <br />' "Preliminary Design of Open Pit Slopes; Multiseam Open Pit Coal Mine" <br />(April 1975) written for Colowyo Coal Company under a separate Contract <br />' No. 807 (dated April 1975). <br />' Information from that report was used in performance of Tasks 3 and 5 <br />mentioned previously in Section C, as well as for additional basic back- <br />' ground data. <br />' E. SUMMARY OF CONCLUSIONS <br />1 <br /> <br /> <br />LI <br /> <br />1 <br />1 <br />As a result of our investigation and analyses, the following summary of <br />conclusions is presented regarding the design of the waste dumps and spoil <br />banks for the Red Wing Mine. A thorough understanding of the results of <br />the analyses can only be gained by reading the entire text, and studying <br />the figures; however, in order to make the principle findings of the analyses <br />more accessible to the reader, they are presented here: <br />1) Results of static and pseudo-static analyses indicate that waste <br />dumps less than 235 feet in height can be built ai average slope <br />angles of approximately 35 degrees. <br />2) Embankments approaching 280 feet high should be flattened to an <br />average slope angle of 30 degrees. <br />WaWAHLEH project 0823 I-3 <br />& ASSOClAfQ <br />
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