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Factors Influencing the Occurrence of Coal Pillar Bumps At the 9- Right Section of the Olga Mine.

Authors
Oyler-DC; Campoli-AA; Chase-FE
Source
Proc 6th Conf on Ground Control in Mining 1987 Jun; :10-17
Link
NIOSHTIC No.
10005600
Abstract
This paper discusses the factors that affect the occurrence of coal pillar bumps at the Olga Mine. These factors have been broken down into two categories--in situ, and those that are related to the mining process itself. The in situ factors include those conditions that exist prior to mining, such as variations in lithology and overburden, presence of jointing, the composition and the physical properties of the rock, and the original stress field existing in the coalbed and adjacent strata. The mining-related factors include the mining sequence, changes in stress in the coalbed and adjacent strata during mining, rates of convergence, and the pattern of failure of the coal and adjacent strata. The factors determined to have the greatest effect on bumping were the overburden, the lithology of the roof and floor rock, and the physical properties of the rock.
Publication Date
19870601
Document Type
OP;
Fiscal Year
1987
NTIS Accession No.
NTIS Price
Identifying No.
OP 84-877
NIOSH Division
PRC;
Source Name
Proc. 6th Conf. on Ground Control in Mining, June 1987, PP. 10-17
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