锦屏电站引水隧洞的岩爆特征及防治措施研究  

Characteristics of Rock Burst and Prevention Measures for Diversion Tunnel in Jinping Hydropower Station

作　　者：卢小刚[1] 

机构地区：[1]中铁十八局集团第四工程有限公司,天津300222

出　　处：《浙江水利水电学院学报》2016年第1期23-27,共5页Journal of Zhejiang University of Water Resources and Electric Power

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,岩爆的发生将危及施工安全和洞室成型质量.基于此,结合锦屏二级水电站2#引水隧洞典型洞段的岩爆实例,总结了其时间、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 ground stress stratum,the rock burst 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,as well as the support parameters for rock bursts at different brackets,to ensure the constructing safety and progress in the future excavation and supporting.

关 键 词：地应力 岩爆 水胀式锚杆 普通砂浆锚杆 能量释放 

分 类 号：TV542[水利工程—水利水电工程]