长江科学院院报 ›› 2014, Vol. 31 ›› Issue (11): 42-46.DOI: 10.3969/j.issn.1001-5485.2014.11.0092014,31(11):42-46

• 岩石力学特性与试验 • 上一篇    下一篇

北疆深埋隧洞地应力与区域应力场的相关性研究

尹健民1,周春华1,2,李云安2,崔东3,汪洋1   

  1. 1.长江科学院 水利部岩土力学与工程重点实验室,武汉 430010;
    2. 中国地质大学 工程学院,武汉 430074;
    3. 新疆水利水电勘测设计研究院,乌鲁木齐 830000
  • 收稿日期:2014-07-14 修回日期:2014-11-05 出版日期:2014-11-01 发布日期:2014-11-05
  • 作者简介:尹健民(1963-),男,四川南充人,教授级高级工程师,博士,主要从事岩石力学、地应力场与工程方面的研究,(电话)027-82820426(电子信箱)yinjm163@163.com。
  • 基金资助:
    国家自然科学基金项目(51204025);国家重点基础研究发展计划(973)项目(2011CB710600);中央级公益性科研院所基本科研业务费项目(CKSF2013033/YT,CKSF2014064/YT)

Correlation between a Tunnel Stress and the Regional Stress Field in North Xinjiang

YIN Jian-min1,ZHOU Chun-hua1,2,LI Yun-an2,CUI Dong3,WANG Yang1   

  1. 1.Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010,China;
    2. Faculty of Engineering, China University of Geosciences, Wuhan 430074,China;
    3.Xinjiang Survey and Design Institute for Water Resources &
    Hydropower, Urumqi 830000, China
  • Received:2014-07-14 Revised:2014-11-05 Online:2014-11-01 Published:2014-11-05

摘要: 在地应力实测资料匮乏的北疆阿尔泰地区,对某深埋引水隧洞进行了水压致裂法地应力场测试。实测结果与区域构造应力场的对比分析表明,研究区域为构造型应力场,最大水平主应力方位与地震的震源机制解一致,呈NNE向,与区域构造应力场相吻合;且埋深约300m以上,平均水平应力与铅直应力的比值不再变小(接近1.0)。应加强该区深部构造应力场研究,重视现场实测手段的应用,提高对区域应力场的宏观把握,为指导类似深埋工程的设计和施工提供参考。

关键词: 深埋隧洞, 地应力, 北疆地区, 构造应力场, 水压致裂法

Abstract: Stress measurement data is in lack in Northern Xinjiang’s Altai region. We tested the stress field of a deep water diversion tunnel in this region by using hydraulic fracturing method. Test result and analysis reveal that the tested stress field is tectonic stress type and the maximum horizontal principal stress orientation is NNE, which is in consistency with the focal mechanism solution. Moreover, it reveals that the ratio of average horizontal stress to vertical stress changes no smaller (close to 1.0)in the depth of more than 300 m. We should strengthen the research on tectonic stress field in deep area and pay attention to the application of in-situ measurement means to improve the macroscopic understanding of regional stress field.

Key words: deep tunnel, geo-stress, North Xinjiang area, tectonic stress field, hydro-fracturing method

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