Extension AHP-Based Assessment of Safety Risk Levels in Subway Deep Excavation Construction

Abstract

Excavation projects in foundation pits are greatly influenced by geological conditions and surrounding environments. The construction process is complex, and apart from the stability of the pits themselves, there are also numerous risk factors. Failure to assess and prevent potential risks in foundation pits can result in severe consequences if accidents occur. This paper presents a method that combines the Analytic Hierarchy Process (AHP) with the theory of extenics to evaluate the safety risk levels in excavation construction of foundation pits. By establishing an extenics model and conducting relevance calculations, the safety risk levels in excavation construction of foundation pits are determined. Furthermore, based on actual engineering cases, the feasibility of the proposed model is demonstrated by comparing the results with the actual situations. The method presented in this paper effectively evaluates the magnitude of safety risks in excavation construction of foundation pits, thereby achieving the goal of guiding practical engineering projects.