锦屏二级水电站深埋长隧洞群的建设和工程中的挑战性问题

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摘要锦屏二级水电站大型深埋隧洞群由4条引水隧洞、2条辅助洞及1条施工排水洞组成，隧洞群总长约118 km，具有埋深大、洞线长、洞径大、地应力水平高、工程地质条件极其复杂、施工布置困难等特点，是目前世界上己建、在建总体规模最大、综合难度最大的水工隧洞群工程。隧洞群建设中面临地下水预报与处理、岩爆防治等关键技术问题。通过对锦屏二级水电站深埋隧洞群建设中遇到岩爆及突涌水工程治理等工程应用实例进行研究总结，提出下一步工程中所面临的挑战及应对措施。锦屏二级水电站工程深埋长隧洞的建设所取得的经验，可为类似工程提供有益的借鉴。

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关键词 ：隧道工程, 锦屏二级水电站, 地下工程, 岩爆, 地下水

Abstract：Jinping II hydropower station includes four diversion tunnels，two auxiliary tunnels and one drainage tunnel，with a total tunnel length of 118 km. These tunnels are characterized as thick overburden，long length，large size in diameter，high geostress，complicated engineering geological conditions and high difficulty for project layout，which make the tunnel project the largest and most difficult hydro-tunnel group in the world. Key technical problems were met during the tunnels excavation，including the forecast and treatment of groundwater，and the prevention of rock burst. The studies and measures adopted against rock burst，the gushing water and the instability of surrounding rock mass during the construction of tunnels are summarized. The experience accumulated during the construction of the tunnels in Jinping II hydropower station shall provide valuable reference for similar projects.

Key words： tunnelling engineering Jinping II hydropower station underground engineering rock burst groundwater

收稿日期: 2010-05-28

引用本文:

吴世勇，王鸽. 锦屏二级水电站深埋长隧洞群的建设和工程中的挑战性问题[J]. 岩石力学与工程学报, 2010, 29(11): 2161-2171.
WU Shiyong，WANG Ge. CHALLENGE ISSUES IN CONSTRUCTION AND PROJECT OF LARGE-SCALE DEEP-BURIED TUNNEL GROUP OF JINPING II HYDROPOWER STATION. , 2010, 29(11): 2161-2171.

链接本文:

http://www.rockmech.org/CN/Y2010/V29/I11/2161

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