Selection of Excavation Method for Shallow Buried Tunnels with Surrounding Rock Based on Fuzzy Theory

摘要

The II standard tunnel across the West extension line of Changsha Zhuzhou Xiangtan complex passes through the complex building structures of the golden family courtyard. The original design was excavated by the open excavation method. But the open excavation method has great disturbance to the surrounding ring environment, and the social stability risk is high, so it can not be implemented. Therefore, this paper constructs the fuzzy model of the excavation method, analyzes the technical factors, the safety factors, the economic factors and the social factors, and determines the appropriate excavation method. The method in this paper can provide technical reference for similar projects.