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The Three-dimensional Structural Analysis of Double-entry and Single- entry Coal Mines. Volume 3 - Three-dimensional Finite Element Analyses of Single- and Double-entry Portions of Sunnyside Mine No.1.

Authors
Van Dillen-DE
Source
NTIS: PB/80-150360 :278 pages
Link
NIOSHTIC No.
10001606
Abstract
Three-dimensional structural analyses of three instrumented areas of a deep longwall coal mine were performed using the finite element code bmines. The three instrumented areas include two single-entry portions and one double-entry portion of the sunnyside No. 1 Mine, sunnyside, Utah. The finite element models simulated the sequence of excavation in each test area: the advance of the entry, installation of structural supports, retreat of the longwall, caving behind the longwall, and accumulation and loading of the gob. The structural supports considered in these finite element models include rock bolts, wood cribs, concrete cribs, steel arch sets, and chocks. Mechanical simulation of the geologic environment is achieved through elastic-perfectly plastic material models employing anisotrophy to represent finely layered regions of the medium. The results of these calculations are compared with the instrumentation readings from the mine. These measurements include closures, crib loads, rock-bolt forces, and stress growth.
Publication Date
19760101
Document Type
CP; Final Contract Report;
Fiscal Year
1976
NTIS Accession No.
PB80-150360
NTIS Price
A14
Identifying No.
OFR 16(3)-80
NIOSH Division
SRC;
Source Name
NTIS: PB/80-150360
State
UT;
Performing Organization
Agbabian Associates
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