Numerical analysis in rock engineering 2 - sequential excavation

• Main Author: Winardi, Aurelia Sharleen
• Other Authors: Zhao Zhiye
• Format: Final Year Project
• Language: English
• Published: 2015
• Subjects: DRNTU::Engineering::Civil engineering
• Online Access: http://hdl.handle.net/10356/64119
• Institution: Nanyang Technological University

Underground space exploration has been widely popular as a sustainable solution for urban development due to the growing population and increasingly limited land space for future use. Especially in geographically small Singapore, to ensure continuous development and growth, studies on underground space development has been going on as part of a long term development master plan. Therefore, there is a need to learn about the effects of excavation in cases of large underground rock cavern construction to ensure construction safety and long-term stability of the rock cavern structure. The aim of this study is to analyse the effect of rock bolt installation under different phases of three stages of sequential excavation, and how it affects the cavern stability using the DDA-2D Modeller program. The properties of rock material is attempted to follow that of the Jurong Formation in the west and southwest of Singapore, and tunnel dimensions will follow closely that of the completed Jurong Rock Caverns oil storage project. The analysis will focus on the stress distribution as well as displacements of the selected rock blocks near the cavern roof and sidewalls. Differences between full-face and sequential excavation methods, with and without rock bolt support are explored.