中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2011, Vol. 30 ›› Issue (S1): 647-649.DOI: 10.3969/j.issn.1674-0696.2011.supp1.033

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水平层状围岩隧道顶板变形特征及机理分析

闫永杰1,翁其能2,吴秉其3,田卫明3   

  1. 1.中交路桥南方工程有限公司,北京101121;2.重庆交通大学岩土工程研究所,重庆400074; 3.重庆交通大学土木建筑学院,重庆400074
  • 收稿日期:2011-05-23 修回日期:2011-06-24 出版日期:2011-07-15 发布日期:2015-03-12
  • 作者简介:闫永杰(1980—),男,内蒙古呼和浩特人,工程师,主要从事公路工程建设管理与施工方面的工作。E-mail:12015731@qq.com

Analysis of Roof Deformation Characteristics and MechanisMin Horizontal Layer Rock Tunnel

YAN Yong.jie1,WENG Qi.neng2 ,wU Bing-qi 3,TIAN Wei-ming3   

  1. 1.Road& Bridge International Co.Ltd.,South Branch Co.Ltd.,Beijing 101 121,China; 2.Institute of Geotechnical Engineering,Chongqing Jiaotong University,Chongqing 400074,China; 3.School of Civil Engineering&Architecture,Chongqing Jiaotong University,Chongqing 400074,China
  • Received:2011-05-23 Revised:2011-06-24 Online:2011-07-15 Published:2015-03-12

摘要: 隧道在开挖过程中,经常会经过水平层状围岩,这将给隧道施工带来很大的困难,造成安全事故。通过对水平层 状围岩隧道顶板变形特征及机理分析得出:水平层状围岩在隧道顶板层面薄弱带附近由于不同步弯曲沉降产生分离, 形成离层;水平岩层软硬相间,层间黏结力较差,隧道开挖后拱顶围岩稳定性较差,拱顶失稳几率较大;对于水平层状 围岩地区要做好塌方的预防和初期处理,尽量做到预防为主。当发生事故时,要做好相应的措施,减少人员的伤亡

关键词: 水平层状围岩, 张裂破坏, 变形, 离层, 控制措施

Abstract: The tunnel is often being tunneled through horizontal layer surrounding rock in process;which will bring great diffieulties in the tunnel construction,causing accidents.Through the analysis of roof deformation characteristics and mechanisMin hori- zontal layer rock tunnel,this paper concludes that the horizontal layer surrounding rock tunnel near roof level sync due to weak produced separation,bending settlement~rmed delamination.Levels between layers alternate with hard and soft rock strata and unbond force is poor,and the stability of surounding rock tunnel excavation vault is poor.After tunneling,it’S more likely to in- crease vaults’instability.For horizontal layer surrounding areas,we must complete collapse prevention and early treatment,and prevention is the main part.When the accident happens,proper measures should be done to reduce personnel casualties

Key words: horizontal layer surounding rock, rifting damage, deformation, separation, control measures

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