Fig. 2. Initial displacement and stress
Fig. 3. Surface settlement after main tunnels excavation
Fig. 4. Surface settlement under different excavation steps
Fig. 5. Crown settlement under different excavation steps
Fig. 6. Contour of stratum settlement
Fig. 7. Surface settlement curve after cross passage excavation
Fig. 8. Maximum settlement in the crown of main tunnels
Fig. 9. Contour of vertical stress after main tunnels excavation
Fig. 10. Stress contour of main tunnels (Pa)
Fig. 11. Displacement contour under different depth after main tunnels excavation
Fig. 12. Variations of deformation under different depth after main tunnels excavation
Fig. 13. Variations of stress under different depth after main tunnels excavation
Fig. 14. Variations of deformation under different depth after cross passage excavation
Fig. 15. Variations of intersection stress under different depth after cross passage excavation
Fig. 16. Displacement contour under different spacing after main tunnels excavation
Fig. 17. Variations of settlement under different spacing after main tunnels excavation
Fig. 18. Stress variations of main tunnel lining under different spacing after main tunnels excavation
Fig. 19. Settlement after cross passage excavation under different spacing after cross passage excavation
Fig. 20. Variations of settlement under different spacing after cross passage excavation6
Fig. 21. Stress variations of main tunnel lining under different spacing after cross passage excavation
Fig. 22. Stress variations of cross passage lining under different spacing after cross passage excavation
Fig. 1. Numerical calculation model
Table 1. Material parameter value
Table 2. Bulk modulus and shear modulus value
Table 3. Model of different depths
Table 4. Model of different spacings
Table 5. Maximum principal stress of the main tunnels lining (MPa)
Table 6. Minimum principal stress of the main tunnels lining (MPa)
Table 7. Octahedral shear stress of the main tunnels lining (MPa)
참고문헌
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