Stability analysis of surrounding rocks of deeply-buried underground chambers based on the improved block theory and simulation using unwedge computer program

• DOI: 10.56748/ejse.24714
• Publication Date: 2025-03-26T05:39:11Z
• Authors: Fugui Tao; Anyi Lan; Lei Han; Xudan Sun; Zhixi Liu
• Keywords: Improved block theory; Structural engineering (General); Architectural engineering. Structural engineering of buildings; TH845-895; Surrounding rock stability; TA630-695; Unwedge program; Computer simulation; Underground chambers

To tackle the challenges of extensive drawing workloads and limited precision inherent in application block theory, this paper presents an optimization theory based on improved vector method. Additionally, Unwedge computer program is employed to conduct visual simulations applications, thereby enhancing ease utilizing theory. validate accuracy our research findings, we conducted a case study stability surrounding rock deeply buried underground caverns with complex geological structures at Jinping-II Hydropower Station. The results reveal that refined method can swiftly identify various areas, offering valuable reference for practical excavation caverns. In engineering case, safety concerns arise key zones factors below 1.5, necessitating implementation appropriate measures during excavation. Furthermore, some blocks exhibit factor zero are positioned top cavern. these could have certain impact However, given their minute volume weight, they be deemed stable. By comparing calculation actual construction process cavern, found largely consistent. This underscores proposed provide theoretical support feasible basis