摘要
黄金坪水电站引水隧洞单洞设计引用流量676.20m3/s,过水断面内径14.5m,洞室跨度较大。围岩以Ⅲ类为主,局部为Ⅳ、Ⅴ类。结合施工期开挖支护设计以及通过分析研究不同工况下洞室的衬砌结构的受力特性,提出隧洞的衬砌、配筋的合理的设计方案。实践表明本工程隧洞设计方案安全可靠,施工可行,经济合理。
The single tunnel design of the diversion tunnel of Huang Jinping Hydropower Station refers to the flow rate of 676.20 m3/s,the inner diameter of the cross section is 14.5 m,and the span of the cavern is larger.The surrounding rocks are dominated by type III,and the local ones are IV and V.Combined with the design of excavation support during construction period and the stress characteristics of tunnel lining structure under different working conditions,the reasonable design scheme of lining and reinforcement of tunnel is put forward.The practice shows that the design scheme of tunnel is safe and reliable,feasible and economical.
作者
宋慧
秦永涛
牛智勇
SONG Hui;QIN Yongtao;NIU Zhiyong(Bei Fang Investigation Design&Research Co.Ltd.,Tianjin,300222,China)
出处
《水电与抽水蓄能》
2019年第2期91-94,101,共5页
Hydropower and Pumped Storage
关键词
隧洞
衬砌
围岩
支护
tunnel
liner
surrounding rocks
support
