A HYBRID DISCRETE ELEMENT-BOUNDARY ELEMENT METHOD OF STRESS ANALYSIS

The discrete element method is a numerical technique suitable for use in modelling the discontinuum behaviour of jointed rock. The disadvantage of this method, in its application to analysis of underground excavations, is the necessity to discretize the complete problem domain. Since the far-field rock responds to the excavation as an elastic continuum, it may be appropriately represented by the boundary element method. This exploits the inherent advantage of the boundary element method in representing a quasi-infinite domain in terms of its internal surface geometry and associated boundary conditions. The procedures employed in developing a first-generation coupled discrete element-boundary element algorithm are described and the solution to a simple problem verifying the performance of the coupled code is presented. A procedure for numerical treatment of installed support systems is also presented. For the covering abstract of the symposium see TRIS 452576. (Author/TRRL)

• Supplemental Notes:
  • Proceedings of the 23rd Symposium on Rock Mechanics, Issues in Rock Mechanics, University of California, Berkeley, California, August 25-27, 1982.
• Corporate Authors:

  American Institute of Mining, Mettalurgy & Petroleum Engineers

  345 East 47th Street
  New York, NY  United States  10017
• Authors:
  • Lorig, L J
  • Brady, BHG
• Conference:
  • Proceedings of the 23rd Symposium on Rock Mechanics, Issues in Rock Mechanics, University of California, Berkeley, California, August 25-27, 1982.
• Publication Date: 1982

Media Info

• Features: Figures; References;
• Pagination: p. 628-636

Subject/Index Terms

• TRT Terms: Algorithms; Box culverts; Calculation; Conferences; Digital computers; Discrete systems; Economic efficiency; Elasticity (Mechanics); Loads; Mathematical analysis; Mathematical models; Methodology; Motion; Pits; Rock excavation; Rock mechanics; Rocks; Stresses; Structural analysis
• Uncontrolled Terms: Discontinuity; Efficiency; Models
• Old TRIS Terms: Discrete elements
• ITRD Terms: 6471: Analysis (math); 6464: Calculation; 8525: Conference; 8673: Digital computer; 9015: Discontinuous; 5911: Efficiency; 5912: Elasticity; 5702: Excavation pit; 5567: Load; 6473: Mathematical model; 9102: Method; 5483: Movement; 4154: Rock; 5757: Rock mechanics; 5575: Stress (in material)
• Subject Areas: Economics; Geotechnology; Highways;

Filing Info

• Accession Number: 00452600
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Jul 31 1986 12:00AM