摘要
建(个)元高速公路咪的村隧道位于建水县坡头乡、隧道右线进口段洞顶埋深0~20m,属浅埋偏压隧道,围岩自稳性差,开挖过程中易产生较大变形,根据设计图纸采用三台阶临时仰拱法施工。开挖前通过借助MIDAS/GTS有限元软件对围岩的力学和变形特性进行分析,得到隧道的围岩变形规律及变形量,隧道施工过程中通过监控量测进行实际变形数据的收集分析,进行相互验证,为今后同类隧道施工提供依据。
Mide Village Tunnel of Jianshui-Yuanyang Expressway is located in Potou Township,Jianshui County.The top of the tunnel at the right entrance of the tunnel is buried 0-20M deep,which belongs to shallowburied bias pressure tunnel.The surrounding rock has poor self-stability and is prone to large deformation during excavation.Three-step temporary inverted arch method is used for construction according to the design drawings.Before excavation,the mechanical and deformation characteristics of surrounding rocks are analyzed by means of MIDAS/GTS finite element software,and the deformation law and amount of surrounding rocks are obtained.During tunnel construction,the actual deformation data are collected and analyzed by monitoring measurements to verify each other,which provides basis for similar tunnel construction in the future.
作者
何一林
郭正祥
赵高锦
路志利
邓声宝
HE Yi-Lin;GUO Zheng-xiang;ZHAO Gao-jin;LU Zhi-li;DENG Sheng-bao(SINOHYDRO BUREAU 14 CO.,LTD.,Kunming 650041,China;Highway Engineering Quality Supervision Station of Honghe Transportation Bureau,Honghe 661000,China)
出处
《云南水力发电》
2021年第4期89-92,共4页
Yunnan Water Power
关键词
隧道施工
全风化花岗岩
浅埋偏压
变形特性
The tunnel construction.Fully weathered granite
A shallow bias
Deformation characteristics
