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Evolution of conventional gate entry design for longwall bump control: two southern Appalachian case studies.

Authors
Zelanko-JC; Heasley-KA
Source
Proceedings: Mechanics and Mitigation of Violent Failure in Coal and Hard-Rock Mines. Washington, DC: U.S. Bureau of Mines, 1995 May; :167-180
Link
NIOSHTIC No.
20024617
Abstract
This paper focuses on the conventional design of gate roads for minimizing bump hazards in longwall mining. The paper describes bump occurrences and the evolution of gate road designs to combat bumps at two southern Appalachian longwall mines. An analysis of gate road system stability at these mines is presented, along with a discussion of the apparent effect of the strength-load ratio on the occurrence of coal bumps. It is suggested that properly sized gate pillars can mitigate tailgate face bumps in many situations by limiting the transfer of abutment stresses to the longwall face.
Keywords
Mining-industry; Coal-mining; Rock-falls; Rock-bursts; Rock-mechanics; Underground-mining; Control-technology; Geology; Geophysics; Engineering-controls; Ground-control; Ground-stability
Publication Date
19950501
Document Type
Book or book chapter
Editors
Maleki-H; Wopat-PF; Repsher-RC; Tuchman-RJ
Fiscal Year
1995
NTIS Accession No.
NTIS Price
NIOSH Division
PRC
Source Name
Proceedings: Mechanics and Mitigation of Violent Failure in Coal and Hard-Rock Mines
State
PA; VA; KY
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