Study on Failure Process of Freeze–Thaw Fractured Rock Under Multistage Cyclic Loads

Abstract In order to further study the failure characteristics of freeze-thawed rocks in alpine region under multistage cyclic loads, a numerical simulation analysis was carried out with RFPA2D software, taking natural fractured granite from Beizhan Iron Mine Hejing County, Xinjiang Province as an example. The results show that degree fracture determines form rock, and when is large, rock will eventually undergo shear slip along fracture. When fissure subjected load, its initial structural deterioration occurs at fissure, tensile occurs. expands certain extent, begins large-scale compressive failure, which leads shear-slip rock. mode affected by development, penetration inclination Angle.