My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
PERMFILE139235
DRMS
>
Back File Migration
>
Permit File
>
300000
>
PERMFILE139235
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 10:40:01 PM
Creation date
11/26/2007 8:27:15 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981033
IBM Index Class Name
Permit File
Doc Date
4/6/1986
Section_Exhibit Name
INTERACTION OF SUBSIDENCE & LANDSLIDING
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
48
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
• <br />• <br />6.0 DEVELOPMENT OF DESIGN GEOLOGIC COLOMN <br />6.1 CORRELATION OF LITHOLOGIES <br />Each of the electric and lithologic logs from the five drill <br />holes located within the permit boundary were interpreted and <br />then integrated into one design geologic column to be used <br />throughout the study. The design column represents the major <br />lithologies of the five drill hole logs and their relative <br />positions. This design geologic column, shown in Appendix B, <br />Fiqure B2, consists of 18 formations, four of which are the major <br />coal seams, C - F. Coal seams A and B were not included because <br />of the restrictions on the number of formations allowed by the <br />slope stability model used in this study. <br />6.2 ASSIGNMENT OF FORMATION PROPERTIES <br />All of the rock mechanics testing data was sorted according to <br />relative position in the design geologic column and assigned a <br />formation number. All data for a formation was then analyzed <br />statistically and the standard deviation for the data determined. <br />These are summarized in Appendix A, Tables Al and A2. Formations <br />No. 1, 2 and 14 have no testing data available. <br />The.friction angles and the cohesion intercepts were then <br />determined from the average unconfined compressive strengths <br />using the Empirical Failure Criterion for Jointed Rock Masses <br />developed by Dr. Evert Hoek. For this analysis the rock was <br />• classified as 'Good Quality Rock Mass' and given the empirical <br />11 <br />
The URL can be used to link to this page
Your browser does not support the video tag.