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Physical and Computer Modeling of Roof Bolt Systems.

Authors
Dar-SM; Smelser-TW; Pettibone-HC
Source
MISSING :59 pages
Link
NIOSHTIC No.
10007335
Abstract
The U.S. Bureau of Mines constructed a full-scale model of a 15-ft wide coal entry to use in combination with finite-element analyses to investigate roof support systems and various types of roof bolts. The objective was to enhance understanding of the fundamental mechanics of the interaction between rock and supports and the relative integrity of bolted mine roof as a function of roof bolt type, length, spacing, and tension, and the basic characteristics of the roof strata. The laboratory test results, when correlated with computer simulations using finite-element analysis and underground verification tests, should provide a basis for designing safer, more cost-effective roof control systems and help to establish guidelines for employing fully grouted resin and mechanically anchored bolting systems. The background for this research, the research approach, the methods and equipment employed, and the results are described in this report.
Publication Date
19890101
Document Type
IH; Report of Investigations;
Fiscal Year
1989
NTIS Accession No.
NTIS Price
Identifying No.
RI 9273
NIOSH Division
SRC;
Source Name
MISSING
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