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MULSIM/BM - a structural analysis computer program for mine design. Users guide.

Authors
Beckett-LA; Madrid-RS
Source
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9168, 1987 Dec; :1-255
Link
NIOSHTIC No.
20035278
Abstract
The Bureau of Mines has developed MULSIM/BM, an improved computer program using the boundary element approach for geomechanical analysis of mine plans in single or multiple coal seams. The report presents the improved features of the MULSIM/BM program. The four major improvements are the following: (1) Ability to specify up to 26 material property sets; (2) a new material model capability for gob and inserted materials, such as packwalls or cribs; (3) ability to model a large area with a grid of undivided blocks and to sub-divide only a specified fine-mesh portion of these blocks into elements; and (4) specification of extraction ratios for the undivided blocks. In addition, an interactive graphics mesh generator program was written to accompany MULSIM/BM. A complete user's guide and program listings are provided in appendixes to the report. The nine-track computer tape is written at the density of 1,600 bits per inch, using unlabeled tape format. The programs are written in ASCII code as 4,960 fixed length records or card images, with 80 characters per record.
Keywords
Computerized-simulation; Computer-programs; Documentation; Mine-engineering; Coal-mines; Structural-analysis
Publication Date
19880101
Document Type
IH; Information Circular
Fiscal Year
1988
NTIS Accession No.
PB88-129473
NTIS Price
A12
Identifying No.
IC-9168
NIOSH Division
DRC
Source Name
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9168
State
CO
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