Numerical Simulation Study on Wall-Rock Deformation Mechanism in Non-Pillar Sublevel Caving Mining Tunnel


The secondary stress distribution and deformation mechanism of excavated mining tunnel of −62m and −74m in Daye mine was studied in the paper. Firstly, the wall-rock was compartmentalized to different engineering geology group and mechanical parameters of wall-rock were determined based on engineering geological exploration and rock mechanics test. Then the state of stress and strain of excavated tunnel was simulated by FLAC3D software, the wall-rock deformation mechanism was analyzed too. The numerical simulation results were validated by convergence monitoring data that obtained in −74m mining tunnel. Studied results show that the range of secondary stress distribution exist differences corresponding to different mining tunnel wall-rock condition, but the characteristic of principal stress distribution is similar that compress stress centralized in sidewall and tensile stress centralized in vault and floor of the mining tunnel.

  • Abstract
  • Introduction
  • Engineering Geology Investigation
  • Numerical Simulation
  • Convergence Monitor
  • Conclusion
  • Reference

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In