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Technology News 452 - LAYOUT: a bump hazard assessment.

Authors
USBM
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, TN 452, 1995 Sep; :1-2
Link
NIOSHTIC No.
20024427
Abstract
The goal of this U.S. Bureau of Mines (USBM) research was to facilitate safe and efficient room-and-pillar retreat mining of bump-prone coalbeds by limiting coalbed stress adjacent to expanding gob areas through variation of section layouts. The first step was design of total-extraction pillars and their associated pillar-extraction plans. The second step was development of a coalbed strength model. The third step was development of stress limit design criteria. The fourth and final step was development of a methodology to estimate the magnitude and distribution of development and abutment loads applied to the pillar line.
Keywords
Mining-industry; Underground-mining; Ground-control; Ground-stability; Room-and-pillar-mining; Coal-mining
Publication Date
19950901
Document Type
Technology News
Fiscal Year
1995
NTIS Accession No.
NTIS Price
Identifying No.
TN-452
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, TN 452
State
PA
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