摘要
根据鄂北工程小直径短隧洞地质情况,对隧洞内多种不良地质、Ⅲ类围岩以下岩层等进行开挖支护技术探讨,提出根据不同地质条件采取锚杆支护、钢拱架支护、小导管超前加固、超前管棚等不同开挖支护技术,并探讨支护技术具体方案,保证了开挖支护的安全性,为类似小直径短隧洞安全支护提供经验和技术参考,同时降低施工风险。
Based on geological condition of minor diameter short tunnel of Water Resources Allocation Scheme in North Hubei Province, excavation support technology under different poor geologic zones and rock stratum worse than Grade 芋 surrounding rock were discussed. According to different geological conditions, different excavation support technology were put forward, such as bolt support, steel arch support, small pipe ahead reinforcement, shed-pipe advanced support, etc. In order to ensure the security of excavation support, specific program of support technology was discussed. This paper could provide experience and reference of safety support technology for similar minor diameter short tunnel, so as to reduce construction risk.
出处
《中国水利》
2017年第22期43-44,共2页
China Water Resources
关键词
短隧洞
支护
小直径
安全措施
short tunnel
support
minor diameter
safety measure
