近水平沉积岩层公路隧道围岩变形特征研究  

Study on Deformation of Surrounding Highway Tunnel Rock of Approximate Horizontal Sedimentary Rock

作　　者：寇智勇[1] 关惠平[2] 张守成[2] 丁石谷 张照旭 

机构地区：[1]成都大学城乡建设学院,四川成都610106 [2]西南石油大学建筑工程学院,四川成都610500 [3]中国石油西气东输管道公司豫鄂管理处,湖北武汉430073 [4]中国石油西气东输管道公司,上海200122

出　　处：《成都大学学报（自然科学版）》2009年第4期336-338,372,共4页Journal of Chengdu University（Natural Science Edition）

摘　　要：根据广元至巴中高速公路某隧道左线近水平沉积岩层周边收敛和拱顶下沉的观测数据,按照围岩级别和达到收敛位移总变形80%和90%的时间,通过对Ⅳ、Ⅴ级围岩段典型监测断面初期变形数据的数理统计和分析,得出了该隧道近水平沉积岩层围岩的变形特征和回归方程,并据此算出了与现场吻合程度较好的该隧道近水平沉积岩岩层隧道Ⅳ、Ⅴ级围岩总收敛的均值及满足二次衬砌要求的时间均值.最后介绍了位移加速度判据在评价该类隧道围岩稳定性和确定隧道二次衬砌施工时间的应用.According to the data of horizontal constringency and arch sedimentation of certain left line tunnel in G-B high-way, in the light of surrounding rock classification and the percentage of total deformation time at 80% and 90%, the deformation features and regressive analysis of tunnel surrounding rocks were obtained and the tunnel lining time and average of rock deformation were obtained accordingly, which were closed to that of Ⅳ and Ⅴ grades surrounding rock of approximate horizontal sedimentary rock after the data of Ⅳ and Ⅴ grades surrounding rock typical sections＇ initial deformation were mathematically counted and analyzed. Finally, the application about criterion of rock displacement acceleration in evaluating the stability of surrounding rocks and determination on the tunnel lining time were introduced.

关 键 词：新奥法 监控量测 水平沉积岩层 隧道围岩 变形特征 回归分析 

分 类 号：U45[建筑科学—桥梁与隧道工程] P694[交通运输工程—道路与铁道工程]