双连拱隧道围岩位移数值分析研究  

Numerical analysis on the surroundning displacement of double-arch tunnel

作　　者：肖林萍[1] 李永树[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031

出　　处：《测绘科学》2009年第1期212-213,216,共3页Science of Surveying and Mapping

摘　　要：在隧道施工过程中,根据现场围岩变形的监测结果,可以及时分析与预测围岩稳定性。结合小金口连拱隧道监测数据,利用数值分析方法对Ⅲ类围岩水平位移监测数据进行处理与分析,计算得出:采用Boltzman函数拟合分析方法,能够较好反映连拱隧道施工过程中水平收敛位移的变化情况,从而得到连拱隧道水平位移的控制标准,对双连拱公路隧道设计和施工具有重要的指导意义。According to the monitored and measured result of surrounding rock deformation, it is possible to analyze and predict the stability of surrounding rock in the construction of the tunnel. Horizontal displacement is calculated and analyzed in surrounding rock type m by monitored and measured data of XiaoJinKou double-arch tunnel in the paper. Regression analysis by Bohzman function can reflect the change of horizontal displacement in double-arch tunnel construction. So the horizontal displacement control base of double-arch tunnel has been suggested. It has an important significance for designing and constructing in double-arch tunnel.

关 键 词：连拱隧道 水平位移 围岩变形 控制标准 

分 类 号：P25[天文地球—测绘科学与技术]