锦屏二级水电站长引水隧洞高地应力下开敞式硬岩隧道掘进机安全快速掘进技术研究

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摘要对开敞式硬岩掘进机在锦屏二级引水隧洞群中的应用经验进行总结和梳理，首先针对锦屏二级水电站高地应力下开敞式硬岩隧道掘进机(TBM)设备选型及掘进参数的优化进行研究，合理确定设备结构及掘进参数；采用BEAM，TSP，地质雷达等手段综合开展掌子面前方超前地质预报，取得良好的预报效果，并制定相应的预处理措施。首次在国内水电工程中开展微震监测系统试验及应用，进行高地应力下岩爆风险预测预警研究，较为准确地预测了岩爆发生的大致范围，并开展一系列防岩爆支护措施的试验研究工作，取得较好的效果，有效降低岩爆风险和危害。最后，对如何实现TBM安全快速掘进进行综合分析研究，对今后开敞式TBM的选型和使用提供参考意见。

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关键词 ：隧道工程, 高地应力, 开敞式隧道掘进机(TBM), 安全快速掘进技术

Abstract：Application experiences of open-type hard rock tunnel boring machine(TBM) to diversion tunnel group of Jinping II hydropower station are summarized. Firstly，in order to determine the suitable equipment structure and boring parameters，selection of facilities and optimization of boring parameters for open-type hard rock TBM of Jinping II hydropower station under high geostresses are studied. Advanced geological prediction in front of tunnel face is carried out by adopting combined means such as BEAM，TSP and geology radar；and good prediction results are achieved；so that corresponding preparing handling measures can be established. Furthermore，the prediction and pre-warning measures of rockburst under high geostresses are investigated by firstly importing microseism monitoring system to the hydropower project in China；and the relative accurately occurrence range of rockburst have been predicted. The investigation has developed a series of experimental works on the supporting measures to prevent rockburst，which have effectively lowered the risk and harm of rockburst. Finally，a comprehensive research on how to realize safe and fast construction of TBM are also carried out，so as to provide references and suggestions to the facility selection and applications of open-type TBM in future.

Key words： tunnelling engineering high geostresses open-type tunnel boring machine(TBM) safe and fast tunneling technology

收稿日期: 2012-02-05

引用本文:

吴世勇，周济芳. 锦屏二级水电站长引水隧洞高地应力下开敞式硬岩隧道掘进机安全快速掘进技术研究[J]. 岩石力学与工程学报, 2012, 31(8): 1657-1665.
WU Shiyong，ZHOU Jifang. RESEARCH ON SAFE AND FAST TUNNELING TECHNOLOGY BY OPEN-TYPE HARD ROCK TBM UNDER HIGH GEOSTRESS OF LONG DIVERSION TUNNELS OF JINPING II HYDROPOWER STATION. , 2012, 31(8): 1657-1665.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/I8/1657

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