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PhD Dissertation Oral Defence, Cong Xu: Discrete element analysis of the mechanical response of bolted steel mesh supporting unstable rock on steep slopes
January 8, 2020 at 1:00 pm - 4:00 pmFree
Cong Xu will defend the dissertation titled:
Discrete element analysis of the mechanical response of bolted steel mesh supporting unstable rock on steep slopes.
Using steel wire mesh pinned by bolts is popular in rock slope stabilization. However, recent design methods only consider the largest load capacity of mesh. The mesh may experience large displacement if it reaches its load capacity. A large displacement may not be acceptable in practice. This research aims to seek a better design method that considers both mesh displacement and load capacity.
Experimental tests are expensive and time-consuming. Thus, this study used an open-source computer program to conduct numerical simulations. The results revealed the load and displacement relationship of steel mesh with bolts. The relationship can help choose a bolt layout to make mesh more efficient. This research also developed a design tool using the machine learning technique.
The design tool can predict mesh behaviour when resisting an unstable rock. This work showed a case study that applied the research findings to design a bolted mesh for a steep rock cut.