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Stress Relief to Control Coal Bursts.

Authors
Haramy-KY; McDonnell-JP; Beckett-LA
Source
Soc Min Eng AIME Preprint 87-57 1987 :12 pages
Link
NIOSHTIC No.
10005732
Abstract
This report presents a review of the most widely used methods to detect and destress high stress zones along coal faces. Laboratory tests of the drilling yield method for high stress detection were conducted to determine the correlation between the volume of cuttings obtained and the magnitude of the applied stress at various confining pressures. A three-dimensional multiple-seam computer modeling program, mulsim, was used to evaluate the effectiveness of stress relief methods. Modeling results and guidelines for destressing are presented. Results indicated that dangerously high stress areas can be controlled by either proper planning or destressing. Proper mine planning guidelines and destressing methods such as volley firing, hydraulic fracturing, and auger drilling are discussed.
Publication Date
19870101
Document Type
OP;
Fiscal Year
1987
NTIS Accession No.
NTIS Price
Identifying No.
OP 76-87
Source Name
Soc. Min. Eng. AIME Preprint 87-57, 1987, 12 PP.
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