浅谈锦屏电站引水隧洞的岩爆特征及防治措施  

Study on the Characteristics of Rockburst and the Prevention and Cure Measures of the Diversion Tunnel in Jinping Hydropower Station

作　　者：于永军[1] 

机构地区：[1]中铁十八局集团国际工程有限公司,天津300222

出　　处：《杨凌职业技术学院学报》2016年第2期25-28,共4页Journal of Yangling Vocational & Technical College

摘　　要：在高埋深、高地应力地层中进行大断面引水隧洞施工中,岩爆时有发生,危及施工安全和洞室成型质量。本文总结了锦屏二级水电站2~#引水隧洞典型洞段的岩爆在时间、空间、烈度及形态方面的特征,提出了岩爆条件下支护设计的整体指导思想,给出了不同等级岩爆的支护参数,保证了后期开挖和支护的施工安全和施工进度。In the construction of large cross section diversion tunnel in high buried depth and high geostress stratum,the rockburst occurs,which endangers the safety of construction and the quality of tunnel forming.In this paper,the characteristics of time,space,intensity and shape of the typical tunnel in the 2#diversion tunnel of the two stage hydropower station in Jinping are summarized,and the overall guiding ideology of the supporting design is proposed.

关 键 词：高地应力 岩爆 水胀式锚杆 普通砂浆锚杆 能量释放 

分 类 号：TV554[水利工程—水利水电工程]