云南糯扎渡水电站右岸泄洪洞进口段开挖支护加固技术  

Excavation and Support Reinforcement Technology for Entrance Section of Flood Discharging Tunnel on the Right Bank of Nuozhadu Hydropower Station in Yunnan

作　　者：柴喜洲 孙美燕 CHAI Xizhou;SUN Meiyan(China Anneng Group First Engineering Bureau Co.,Ltd.,Nanning 530200,China;Guangxi Transport Vocational And Technical College Nanning 530023,China)

机构地区：[1]中国安能集团第一工程局有限公司,广西南宁530200 [2]广西交通职业技术学院,广西南宁530023

出　　处：《红水河》2022年第5期1-5,共5页Hongshui River

摘　　要：为确保泄洪洞平顶进口洞身段开挖施工安全,在地质条件复杂、施工难度大的大跨度平顶洞口通过优化设计断面,根据开挖支护进度结合变形监测动态调整喷、锚、堵、撑等综合支护措施,确保了糯扎渡水电站右岸泄洪洞进口渐变段开挖支护围岩稳定,为类似项目提供一种安全可靠、经济合理的加固技术和管理经验。In order to ensure the safety of the excavation and construction of the flat-roof entrance section of the flood discharge tunnel,the optimized design section is adopted in the large span flat-roof entrance with complex geological conditions and difficult construction.According to the excavation and support progress and deformation monitoring,the comprehensive support measures such as spray,anchor,plugging and bracing are dynamically adjusted to ensure the stability of the excavation and support of the surrounding rock in the gradual change section on the right bank flood discharge tunnel of Nuozhadu Hydropower Station,which provides a safe,reliable,economical and reasonable reinforcement technology and management experience for similar projects.

关 键 词：泄洪洞 进口段 开挖支护 加固 糯扎渡水电站 

分 类 号：TV651.3[水利工程—水利水电工程]