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REP06340
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REP06340
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Last modified
8/24/2016 11:36:53 PM
Creation date
11/26/2007 11:19:51 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981033
IBM Index Class Name
Report
Doc Date
4/22/1982
Doc Name
1982 STABILITY ANALYSIS OF PORTAL & ACCESS ROAD AREAS
From
ROCKY MOUNTAIN GEOTECHNICAL
Permit Index Doc Type
SUBSIDENCE REPORT
Media Type
D
Archive
No
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5. Assistance of the client in selection of available <br />l alternatives. <br />l 6. Perform final design of retaining structures as may be <br />1 required for stabilization of existing and proposed portal areas. <br />1 7. Formulation of recommendations pertaining to a <br />1 monitoring program to be implemented on the mine site for both <br />the operational phase and post reclamation. <br />NOTE: Final design plans and specifications will be <br />submitted under separate cover from this report. <br />FIELD INVESTIGATION: <br />I Five test borings were located on the site and drilled to <br />varying depths, ranging from 10 to 30 feet, with 25 feet being <br />typical. Copies of test borings providing specific information <br />on soil and rock materials encountered will be found in the <br />I Appendix of this report. Field logs are available for inspection <br />upon request to this office. <br />In addition to information obtained from test borings, as <br />' described above, a general site reconnaissance was performed and <br />detailed mapping was conducted within the area of the existing <br />1 fan portal on the uppermost bench. Detailed joint studies were <br />performed on intact, in-place bedrock deep underground in the fan <br />portal and cocrelated with detailed measurements made on the <br />sandstone outcrop exposed at the surface immediately above the <br />existing entry poctal area. <br />4 <br />
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