2013•Water Resources and PowerRequires access
Three-dimensional Element Code Simulation of High Buried Depth Joint Rock Tunnel Excavation and Bolt Support
Rui Guo
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Abstract
The stability and support effect of the tunnel has highly buried depth and is passed through by complex structure planes.Based on the established joint rock tunnel model,three-dimensional discrete element method is adapted to simulate the variation of surrounding rock displacement and stress response after excavation and bolting support,respectively.The results show that the deformation of surrounding rock appears a little large after excavation;it is necessary to consider the influence of underground water on the tunnel rock;the tunnel need to be supported;the displacement of tunnel rock decreases after being supported,and the stability of the tunnel surrounding rock is enhanced.