My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2017-08-08_REVISION - M1973021
DRMS
>
Day Forward
>
Revision
>
Minerals
>
M1973021
>
2017-08-08_REVISION - M1973021
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
6/16/2021 6:23:41 PM
Creation date
8/8/2017 3:28:23 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1973021
IBM Index Class Name
Revision
Doc Date
8/8/2017
Doc Name
Request for Technical Revision
From
Aggregate Industries GEI Consultants, Inc.
To
DRMS
Type & Sequence
TR5
Email Name
MAC
WHE
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
Jump to thumbnail
< previous set
next set >
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
479
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
4. Highwall Stability Analysis <br /> The highwall stability section of this TR addresses the slope stability analyses that were <br /> conducted to support the revised South Quarry highwall design. The purpose of the stability <br /> analyses is to evaluate high wall stability associated with increasing the interbench highwall <br /> heights (from 40H:4OVto 25H:70V) and to develop an optimum highwall configuration that <br /> is meets industry standards for assumed stability while optimizing South Quarry reserves. <br /> 4.1 Kinematic Analyses <br /> Data obtained during GEI's South Quarry mapping to support the 2013 through 2016 <br /> Geotechnical Addendum to the Annual Report for M-1973-021, discussed in Section 2.3 <br /> above, was utilized in the development of the kinematic analysis. Two and three- <br /> dimensional modeling utilizing the mine highwall analysis software suite developed by <br /> Rocscience was conducted to evaluate various modes of kinematic highwall failures. The <br /> various modes and software used are described below: <br /> • Dips (V7.0)—graphically analyze and visualize structural data obtained within the <br /> South Quarry utilizing stereonets in two-dimensions. <br /> • Planar Failure (RocPlane V3.0)—interactive analysis tool for evaluating the <br /> possibility of planar sliding failure in rock slopes in two-dimensions. <br /> • Wedge Failure (SWedge V6.0)—interactive analysis tool for evaluating the stability <br /> of surface wedges in rock slopes, defined by two intersecting discontinuity planes,the <br /> slope surface and an optional tension crack in three-dimensions. <br /> • Toppling Failure (RocTopple V 1.0)—interactive analysis tool for evaluating block <br /> toppling in rock slopes in two- and three-dimensions. <br /> For the kinematic analyses,three primary highwall orientations were assumed within the <br /> South Quarry(Figure 3): <br /> • East highwall (north/south) Trending 180'—dipping 45' to the east(90' dip <br /> direction) <br /> • West highwall (north/south) Trending 0°—dipping 67'to the west(270' dip <br /> direction) <br /> • South highwall (east/west) Trending 90'—dipping 67' to the north(0' dip direction) <br /> Aggregate Industries Morrison Quarry GEI Consultants, Inc. <br /> South Quarry Highwall Design Technical Revision 13 August 2017 <br />
The URL can be used to link to this page
Your browser does not support the video tag.