Deformation and Failure Mechanism of Brittle Rocks under Loading and Unloading Conditions in High Stress Area = Deformation and Failure Mechanism of Brittle Rocks under Loading and Unloading Conditions in High Stress Area

다국어 초록 (Multilingual Abstract)

Excavation of rock mass slope engineering is a complex loading and unloading process. The rock’s strength, deformation and failure are greatly different under loading and unloading conditions. This study presents the research on the deformation and failure mechanism of rock under loading and unloading and its application in high stress area, choosing Dabenliu high slope in the Jinping hydropower station as the typical research object, analyzing the deformation mechanism of the slope based on geotechnical investigation, acquiring the mechanical parameters of rock based on the laboratorical tests, building rock damage constitutive model, determining the mechanical parameters of rock masses based on quality evaluation system of rock mass, finally analyzing the deformation mechanism and the slope stability considering the unloading and damage effects based on numerical simulation. The research output will provide theoretical guarantee to the successful construction and safe operation of similar projects and have important theoretical significance as well as engineering practical value.