Prediction Versus Actual Response of Rocks in an Excavation of Underground Cavern at the Lam Ta Khong Pumped Storage Project
- Organization:
- Society for Mining, Metallurgy & Exploration
- Pages:
- 8
- File Size:
- 248 KB
- Publication Date:
- Jan 1, 2003
Abstract
A large underground cavern with dimensions of 25m × 175m × 49m (W×L×H) was excavated in sandstone and siltstone to house 4 units of hydropower generator and was completed in 2000. In feasibility study stage, the property of the siltstone which governs the ceiling of the cavern was questionable due to slaking phenomenon. Parameters on rock properties for design were back calculated from actual ground response measured from a trial excavation. For safety of construction, comparison between prediction and actual ground responses during excavation had proceeded. The prediction was provided by means of PHASES and PHASE2 software and the actual rock response was detected by the provided monitoring system.
Citation
APA: (2003) Prediction Versus Actual Response of Rocks in an Excavation of Underground Cavern at the Lam Ta Khong Pumped Storage Project
MLA: Prediction Versus Actual Response of Rocks in an Excavation of Underground Cavern at the Lam Ta Khong Pumped Storage Project. Society for Mining, Metallurgy & Exploration, 2003.