Abstract:By analyzing the reason of failure of support in the fractured section of deep copper mine, through the establishment of rock mechanics analysis model of roadway excavation, the radius and stress distribution of the breaker ring after tunnel excavation was calculated. According to the calculation results, the roadway in the broken section was analyzed. The support parameters were designed and calculated. The design of reinforced concrete and bolt joints was adopted. The concrete thickness was 95cm and the length of the anchor bolt was 2m. The new support scheme had obvious effect on roadway support in the fragmented section.