某深埋花岗岩坑道施工期围岩破坏特征初步研究
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- 英文论文题名：A Preliminary Study on Surrounding Rock Failures Characteristics of a Deep Granite Tunnel during Construction
- 论文作者：肖威 ; 李博 ; 吴润江 ; 王华伟
- 英文论文作者：XIAO Wei ; LI Bo ; WU Runjiang ; WANG Huawei ; Northwest Institute of Nuclear Technology
- 年：2016
- 作者机构：西北核技术研究所;
- 论文关键词：围岩破坏 ; 初始应力场 ; 片帮
- 英文论文关键词：Surrounding rock failure ; Initial stress field ; Spalling
- 会议召开时间：2016-10-24
- 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
- 语种：中文
- 分类号：U451.2
- 学会代码：OGTY
- 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
- 会议地点：中国四川成都
- 主办单位：中国土木工程学会隧道及地下工程分会
- 学会名称：中国土木工程学会
- 页数：5
- 文件大小：800k
- 原文格式：O
- 会议级别：全国
摘要
深埋硬岩坑道处于复杂应力环境下,施工期围岩破坏蕴含丰富的地质信息。本文收集整理了某花岗岩坑道施工期的围岩变形破坏特征,分析了围岩破坏模式。根据坑道破坏信息得出的坑道初始应力场最大主应力方向和磁组构法获得的古构造应力场方向具有较好对应,说明根据围岩应力型破坏特征反推初始应力场最大主应力方向是可靠的。基于围岩破坏的应力场分析可从整体上把握工程区围岩初始应力场特征,为后续地应力测试提供参考。
Surrounding Rock Failures contain a wealth of geological information,which is under a complex stress condition.We collected the Surrounding Rock Failures characteristics of a granite tunnel during construction,and analyzed failure modes.The direction of initial maximum principal stress based on surrounding rock failures and the direction of the paleo tectonic stress based on magnetic fabric are consistent.The result indicated that the initial maximum principal stress direction based on the damage features caused by stress was reliable.We can learn in-situ stress field characteristics of the rock mass in the research area as a whole from analysis of stress field based on failure of surrounding rock.And the result could provide a reference for subsequent stress test.
Surrounding Rock Failures contain a wealth of geological information,which is under a complex stress condition.We collected the Surrounding Rock Failures characteristics of a granite tunnel during construction,and analyzed failure modes.The direction of initial maximum principal stress based on surrounding rock failures and the direction of the paleo tectonic stress based on magnetic fabric are consistent.The result indicated that the initial maximum principal stress direction based on the damage features caused by stress was reliable.We can learn in-situ stress field characteristics of the rock mass in the research area as a whole from analysis of stress field based on failure of surrounding rock.And the result could provide a reference for subsequent stress test.
引文
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[2]张春生,侯靖,朱永生等.深埋隧洞围岩应力分布与破坏机理[J].现代隧道技术,2011,48(3):7-13.ZHANG Chunsheng,HOU Jing,ZHU Yongsheng,et al.Stress Distribution and Stress-induced Failures in Surrounding Rock Mass of Deep Tunnels[J].Modern Tunnelling Technology,2011,48(3):7-13.
[3]向天兵.大型地下厂房洞室群施工期动态反馈优化设计方法研究[D].武汉:中国科学院武汉岩土力学研究所,硕士论文,2010.XIANG Tianbing.Study on Dynamic Feed-Back Optimization Design Method of Large Underground Power-house Cavern Group during Construction Period[D].Wuhan:Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Thesis of Master,2010.
[4]张宜虎,卢轶然,周火明,等.围岩破坏特征与地应力方向关系研究[J].岩石力学与工程学报,2010,29(A02):3526-3535.ZHANG Yihu,LU Yiran,ZHOU Huoming,et al.Study of Relationship between Failure Properties of Surrounding Rock and Direction of Geostress[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(A02):3526-3535.
[5]王华伟.某山体磁组构法构造研究[R].西安:西北核技术研究所,2014.WANG Huawei.Structure Study based on Magnetic Fabric of a Mountain[R].Xi'an,Northwest Institute of Nu-clear Ttechnology,2014.
[6]关宝树.隧道工程施工要点集[M].北京:人民交通出版社,2013.GUAN Baoshu.Key Points in Tunnel Construction[M].Beijing:China Communications Press,2013.
[7]陆家佑,王昌明.根据岩爆反分析岩体应力研究[J].长江科学院院报,1994.,11(3):27-30.LU Jiayou,WANG Changming.Study on Back Analysis for Stress of Rock Mass from Information of Rockbursts[J].Journal of Yangtze River Scientific Research Institute,1994,11(3):27-30.
[8]卢波,王继敏,丁秀丽,等.锦屏一级水电站地下厂房围岩开裂变形机制研究[J].岩石力学与工程学报,2010,29(12):2429-2441.LU Bo,WANG Jimin,DING Xiuli,et al.Study of Deformation and Cracking Mechanism of Surrounding Rock of Jinping I Underground Powerhouse[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(12):2429-2441.
[9]江权,冯夏庭,徐鼎平,等.基于围岩片帮形迹的宏观地应力估计方法探讨[J].岩土力学,2011,32(5):1452-1459.JIANG Quan,FENG Xiating,XU Dingping,et al.Evaluation Method of General Geostress based on Spalling Features of Wall Rock[J].Rock and Soil Mechanics,2011,32(5):1452-1459.
[10]黄润秋,黄达,段绍辉,等.锦屏Ⅰ级水电站地下厂房施工期围岩变形开裂特征及地质力学机制研究[J].岩石力学与工程学报,2011,30(1):23-35.HUANG Runqiu.HUANG Da,DUAN Shaohui,et al.Geomechanics Mechanism and Characteristics of Surrounding Rock Mass Deformation Failure In Construction Phase For Underground Powerhouse Of Jinping I Hydropower Station[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(1):23-35.