A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Three-Dimensional Finite-Element Analysis of a Room and Pillar Coal Mine (A Comparison with Experiment)
Using a three-dimensional finite element computer idealization, an analytical study was made of roof behavior in a room and pillar coal mine. Standard engineering property information for materials at the test site was used with a computer code developed for the Bureau of Mines. Roof sag, roof-bolt load changes, and convergence were calculated, and the results compared with experiments. Excellent agreement was achieved. Computer calculations show that roof bolt loads depend on the excavation sequence and the geometric location of the bolts at an intersection. Movement at the bolt anchor controls the bolts' ability to absorb additional load. Even with good anchorage (as in limestone at our test site), the effective stiffness of the bolts was reduced by one-half. (ERA citation 01:022571)
Three-Dimensional Finite-Element Analysis of a Room and Pillar Coal Mine (A Comparison with Experiment)
Using a three-dimensional finite element computer idealization, an analytical study was made of roof behavior in a room and pillar coal mine. Standard engineering property information for materials at the test site was used with a computer code developed for the Bureau of Mines. Roof sag, roof-bolt load changes, and convergence were calculated, and the results compared with experiments. Excellent agreement was achieved. Computer calculations show that roof bolt loads depend on the excavation sequence and the geometric location of the bolts at an intersection. Movement at the bolt anchor controls the bolts' ability to absorb additional load. Even with good anchorage (as in limestone at our test site), the effective stiffness of the bolts was reduced by one-half. (ERA citation 01:022571)
Three-Dimensional Finite-Element Analysis of a Room and Pillar Coal Mine (A Comparison with Experiment)
R. T. Langland (author)
1975
23 pages
Report
No indication
English
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