Supporting Numerical Simulation of Roadway Surrounding Rock in Deep High Stress Based on Broken-Expand Deformation

Abstract:

According to large deformation and supporting problem ofroadway surrounding rock under deep high stress caused by broken-expanddeformation, supporting numerical simulation and optimization on a roadway werestudied. Two primary support scheme of medium length anchor with self-drillinganchor and short pre-stressed anchor withself-drilling anchor and three secondary support scheme of 5m, 6mand 7m length cable were proposedbased on roadway engineering characteristics; Calculationparameters of support structureparameters and surrounding rock were determined based on broken-expanddeformation mechanism, and scheme were calculated respectively; Deformation, plasticzone and stable state of surrounding rock under different support were analyzedbased on results individually, and optimal support scheme were opted. Theresults showed that roadway used 5.5~6.0manchor cable as secondary support whose stability factor can be achieved 1.28could meet productive requirement.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 1310-1314
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.1310
• Online since: August 2013
• Authors: Wei Jian Yu*, Yan Si Qu, Dai Qiang Deng
• Keywords: Broken-Expand Deformation, Deep High Stress, Numerical Simulation, Roadway Surrounding Rock, Supporting

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