MULSIM/BM - a structural analysis computer program for mine design. Users guide.
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9168, 1987 Dec; :1-255
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.
Computerized-simulation; Computer-programs; Documentation; Mine-engineering; Coal-mines; Structural-analysis
IH; Information Circular
NTIS Accession No.
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9168