浅埋偏压隧道施工风险评估指标体系的研究

Study on Construction Risk Assessment Index System of Shallow Buried Bias Tunnel

浅埋偏压隧道受力复杂,施工风险较高,科学开展施工阶段的风险评估是保障其施工安全的重要支撑。风险评估指标的筛选是风险评估的关键部分,依托张桑高速麻栗垭隧道,采用主观分析法与客观分析法相结合,建立了麻栗亚隧道施工风险评估指标体系,保证安全风险评估具有科学性、合理性和实用性,为浅埋偏压隧道施工技术提供参考意见。

Shallow buried bias tunnel has the characteristics of buried depth and unbalanced force,so it is prone to fall and collapse during construction,The risk assessment of shallow bias tunnel construction can effectively guide field construction and ensure construction safety,and the selection of risk assessment indicators is the key part of risk assessment.This paper relies on a high-speed sang Ma Li Wu tunnel,using subjective analysis and objective analysis method,establish construction risk assessment index system of chestnut tunnel,safety risk assessment is scientific,reasonable and practical,and provide reference for the construction technology of shallow bias tunnel.