娘拥水电站引水隧洞超高地温段综合施工技术  

Construction Technique for Ultrahigh-earth-temperature Section in Diversion Tunnel of Niangyong Hydropower Station

作　　者：李占先[1] 

机构地区：[1]中铁十四局集团有限公司,济南250014

出　　处：《铁道建筑技术》2014年第10期64-68,共5页Railway Construction Technology

摘　　要：娘拥水电站引水隧洞罕见的超高地温给隧洞施工增加了难度，岩石表面温度达58℃，涌水温度为82℃，爆破孔内温度为48～76℃。通过介绍隧洞降温系统、炮孔冷却循环系统等，总结和探讨了在高地温条件下的隧洞施工技术，从而保证了在高地温情况下隧洞的正常掘进。The unusual ultrahigh-earth-temperature adds difficulty to the diversion tunnel construction in Niangyong hydro- power station. The temperature of rock surface reaches 58 ℃, the temperature of gushing water reaches 82 ℃ , and the temperature of blast hole is about 48 to 76 ℃. The paper discusses the tunnel cooling system, blast hole cooling system, and summarizes tunnel construction technology under ultrahigh temperature, which ensures the normal tunneling under ul- trahigh temperature conditions.

关 键 词：引水隧洞 超高地温 降温措施 

分 类 号：U459.6[建筑科学—桥梁与隧道工程]