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Mining Publication: Ground Control Design for Highwall Mining

NOTE: This page is archived for historical purposes and is no longer being maintained or updated.

Original creation date: February 2005

Image of publication Ground Control Design for Highwall Mining

Highwall mining is an important surface coal mining method, and it may account for approximately 4% of total U.S. coal production. Highwall stability is the major ground control related safety concern. Ground control plans for highwall mining should specify hole width, web pillar width, barrier pillar width and number of holes between barriers. This paper offers simple design charts for these parameters aimed at providing "ball park" checks. Web pillars containing pre-existing auger holes are analyzed and a design chart for estimating their minimum width is also presented. Finally, close proximity multiple seam highwall mining, which may have caused several serious highwall failures, is analyzed. Web and barrier pillar recommendations for this special situation are presented.

Authors: RK Zipf

Conference Paper - February 2005

NIOSHTIC2 Number: 20026233

2005 SME Annual Meeting, February 28 - March 2, Salt Lake City, Utah, SME preprint 05-82. Littleton, CO, Society for Mining, Metallurgy, and Exploration, Inc., 2005; :1-12