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PERMFILE47216
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PERMFILE47216
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Last modified
8/24/2016 10:49:16 PM
Creation date
11/20/2007 1:05:22 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981034
IBM Index Class Name
Permit File
Doc Date
3/19/1984
Section_Exhibit Name
APPENDIX G Rocky Mtn Geotechnical - Red Canyon #2 Portal Cut Investigation 3/84
Media Type
D
Archive
No
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<br />conditions are found contrary to the stability analysis. <br />Therefore, it is recommended that the excavation for the proposed <br />slopes be closely inspected and monitored. It is important to <br />note that in the case of all slope stability problems, and <br />particularly in the case of rock slope stability, design is an <br />on-going process that continues all the way through construction. <br />Inspection of the slopes during construction is very important, <br />' if not the most important, aspect of the design process. <br /> <br /> It is also recommended that water be kept away from the slopes by <br />' means of diversion or drainage ditc hes located along the top of <br /> the slopes. <br /> <br />' 6.2 PROPOSED $~j; SLOPES <br /> The proposed layout for the benches for all alternatives have a <br />' safety factor greater than 1.5 and should be stable as shown on <br /> the plans. It is recommended that in the vicinity of the bench <br />' slope all loose or soft material be removed from the surface. <br />' 6.3 PROPOSED ~jp]~y RECLAMATION STABILITY <br />The final reclamation plan's slopes are generally very flat as <br />' typically shown on Figure 17. Therefore, slope instability does <br />' not seem to be a problem. <br />' 6.4 BLASTING <br />The effect of blasting near the proposed portal face will have an <br />t important impact on stability. It is very desireable to minimize <br />damage to the rock in the last 150 feet of the cut. within this <br />' 15 <br />
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