土工基础

›› 2017, Vol. 31 ›› Issue (3): 378-382.

• 工程实录 • 上一篇    

巴基斯坦尼鲁姆杰鲁姆水电项目TBM超前地质预报系统

熊浩森，朱 斌   

  1. （中国葛洲坝集团第三工程有限公司，西安 710077）
  • 收稿日期:2017-05-08 修回日期:2017-05-10 出版日期:2017-06-25 发布日期:2017-06-26
  • 作者简介:熊浩森(1989-)，男，助理工程师，研究方向为房屋建筑、水电工程项目管理工作。

Geohazards Advanced Prediction System in TBM Excavation of Neelum-Jhelum Hydroelectricity Project in Pakistan

XIONG Haosen， ZHU Bin   

  1. (China Gezhouba Group No. 3 Engineering Co., Ltd., Xi'an 710077)
  • Received:2017-05-08 Revised:2017-05-10 Online:2017-06-25 Published:2017-06-26

摘要： 当TBM遭遇不良地质情况时，经常出现突涌水、塌方和大变形等地质灾害，往往造成机械被卡、被埋甚至报废的严重事故。为了降低TBM施工中遭遇事故的风险，采用超前地质预报系统进行探测，根据前方的地质情况预先制定合理的处置措施和施工预案，规避和预防重大灾害事故的发生。作为巴基斯坦首次采用TBM法进行隧道施工，项目所在山区无长距离洞室开挖先例，在N-J隧洞TBM段掘进配置了三套独立预报系统，即ISIS、TST地震波发超期预报和传统的超前钻探相结合的方法进行地质预报，实践证明这三种方法的结合使用为现场快速施工提供了很大的帮助。

关键词: 喜马拉雅山脉, TBM法施工, ISIS, TST, 超前钻探

Abstract: The geohazards, such as, groundwater rush, collapse and excessive deformation, are frequently encountered in the tunnel excavation by Tunnel Boring Machine (TBM). These hazards might result in jam, burry and even the completely loss of TBM equipment. In order to minimize the potential risks, an advanced prediction system can be introduced in the TBM excavation to predict these adverse geological conditions and to prepare the mitigation measures. As the first application of TBM excavated tunnel in Pakistan, the tunnel for the NeelumJhelum hydroelectricity project is located at southern side of Himalaya Mountains and no previous long distance tunnel was constructed. In order to control the potential risks and geohazards, three independent advanced prediction systems, namely, Integrated Seismic Imaging System (ISIS), Tunnel Seismic Tomography (TST) and a conventional advanced prediction system, were installed in the tunnel excavation. The results demonstrated that these systems provided a large amount of useful information regarding the rock mass conditions and facilitated the tunnel excavation.

Key words: Himalaya Mountains, Tunnel Excavation by TBM, Integrated Seismic Imaging System (ISIS), Tunnel Seismic Tomography (TST), Advanced Drilling