Study on Construction Technology and Risk Control of Large-section Underground Tunnel
羊山发 YANG Shan-fa
（深圳市深汕特别合作区建设工程质量安全监督站，深圳 518000）
（Shenzhen Shenshan Special Cooperation Zone Construction Project Quality and Safety Supervision Station，Shenzhen 518000，China）
摘要：地下隧道的大截面暗挖施工是一项复杂且高风险的工程，工程重点为大截面隧道的施工工艺及风险控制技术。相关人员首先要对隧道不同级别围岩的特性进行分析，其次明确几种主要的开挖方法，如双侧壁导坑法、单侧壁导坑法、新意法、预留核心土台阶法和台阶法，施工过程中还要结合具体施工制定安全防护措施，并提出有效的风险控制策略。
Abstract: The construction of large section underground tunnels is a complex and high-risk project, with a focus on the construction technology and risk control techniques for large section tunnels. The relevant personnel first need to analyze the characteristics of different levels of surrounding rock in the tunnel, and then clarify several main excavation methods, such as double-sided wall guide method, singlesided wall guide method, innovative method, reserved core soil step method, and step method. During the construction process, safety protection measures should be formulated based on specific construction, and effective risk control strategies should be proposed.
关键词：隧道；大截面；暗挖施工；风险控制
Key words: tunnel；large-section；underground excavation；risk control
中图分类号：U455 文献标识码：A 文章编号：1006-4311（2024）25-065-03 doi:10.3969/j.issn.1006-4311.2024.25.019
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