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A Case History of a Major Rock Burst.

Authors
Leighton-FW
Source
MISSING :14 pages
Link
NIOSHTIC No.
10002448
Abstract
The Bureau of Mines monitored a rock-burst-prone pillar in a metallic ore vein, up to and through failure, to measure its reactions to increasing loads, as it was mined. Three parameters were monitored: the stress changes at chosen points within the pillar, the displacement characteristics of the drift above the pillar, and the microseismic activity in and around the pillar. In descending order of effectiveness, the microseismic technique, vibrating wire stress measurements, and displacement measurements reflected the pillar reactions, and all showed good correlation to one another. A major rock burst in the pillar, which destroyed about 100 feet of drift above the pillar, occurred at the end of this study. This burst was preceded by a large amomaly in the microseismic activity in the failure area.
Publication Date
19820101
Document Type
IH;
Fiscal Year
1982
NTIS Accession No.
NTIS Price
Identifying No.
RI 8701
NIOSH Division
DRC;
Source Name
MISSING
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