连拱隧道水平位移控制标准研究  

Study on control base of horizontal 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,四川成都610031

出　　处：《四川建筑科学研究》2010年第1期103-105,共3页Sichuan Building Science

摘　　要：在连拱隧道建设中,必须进行围岩变形及位移的监测。根据现场围岩位移的监测结果,可以及时分析与预测围岩稳定性,以保证隧道施工的安全进行。结合小金口连拱隧道现场监测数据,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,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变化的控制标准,对连拱公路隧道设计和施工具有一定的指导意义。It is necessary to monitor deformation and displacement of surrounding rock in the construction of the tunnel. According to result of monitored and measured of surrounding rock deformed and, stability of surrounding rock is analyzed and predicted to ensure for saving. Horizontal displacement is calculated and analyzed in surrounding rock types Ⅲ by monitored and measured data of XIAOJINKOU double-arch tunnel in the paper. Regression analysis by Boltzman function can reflect the change of horizontal displacement in double-arch tunnel eonstruetinn. So horizontal displacement control base of double-arch tunnel has been suggested. It is important reality 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：U455[建筑科学—桥梁与隧道工程]