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An Investigation Into the Effects of a Retreating Longwall on a Three-entry Gateroad System.

Authors
Allwes-RA; Listak-JM; Chekan-GJ
Source
Pro Soc Min Eng AIME 112th Annu Meeting Atlanta, Georgia, 1983 Mar; :95-112
Link
NIOSHTIC No.
10003907
Abstract
This paper presents the final results of an in-mine study conducted by the Bureau of Mines on a three-entry gateroad system utilizing the stiff-yield pillar design concept. The analyses of roof-to- floor convergence and roof-bolt loading of headgate systems and tailgate chain pillar stresses are presented in detail as the longwall panels were mined. Stress distribution within pillars, relative stress changes between yield and abutment pillars, and the histories of pillar stress, roof-to-floor convergence, and roof-bolt loading as a function of longwall movement are discussed.
Publication Date
19830301
Document Type
OP;
Fiscal Year
1983
NTIS Accession No.
NTIS Price
Identifying No.
OP 51-84
NIOSH Division
PRC;
Source Name
Pro. Soc. Min. Eng. AIME 112th Annu. Meeting, Atlanta, Georgia, Mar. 6- 10, 1983, PP. 95-112
State
GA;
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