围岩变形监测在新疆某软岩隧洞施工中的应用

发布时间：2018-03-24 11:51

本文选题：隧道　切入点：围岩　出处：《西安石油大学》2014年硕士论文

【摘要】：随着我国社会经济的高速发展,工程建设中需求的隧道越来越多,这些隧道有些出现在高等级公路的建设中,有些服务于其他用途,如排水等。为了确保隧道施工过程安全、顺利进行,需要依据已完成的隧道建设施工案例,制定出合理的施工方案。在施工过程中,为了保证围岩以及支护结构的稳定性,需要及时掌握隧道监控量测资料,以便对施工参数做出修改。本文从理论和实际案例这两个方面对隧道监控量测进行了探讨,首先对监控量测技术的发展现状进行了总结,紧接着对隧道围岩稳定性进行了分析,并介绍了监控量测技术的主要内容,最后依托新疆某隧道的施工案例,对格栅拱架钢筋计监测数据、一次支护后隧道围岩收敛变形监测数据和二次衬砌钢筋应力监测数据进行解释。通过对收敛数据进行回归分析,推算出围岩变形的相对位移值,掌握隧洞围岩的变形规律,确定二次支护时机,并通过比较推算的相对位移值与实测位移值,探讨了如何根据监控量测资料确保围岩以及支护结构的稳定性。对监控量测数据的回归分析结果与实际检测资料吻合的较好,基于取得的资料提出了合适的支护时机,保证了该隧道施工过程安全进行。
[Abstract]:With the rapid development of social economy in our country, more and more tunnels are needed in the construction of engineering. Some of these tunnels appear in the construction of high-grade highway, some serve other purposes, such as drainage, etc. In order to ensure the safety of tunnel construction process, In order to ensure the stability of surrounding rock and supporting structure, it is necessary to grasp the monitoring and measuring data of tunnel in time in order to ensure the stability of surrounding rock and supporting structure. In order to modify the construction parameters. In this paper, the tunnel monitoring measurement is discussed from both theoretical and practical cases. Firstly, the development status of monitoring measurement technology is summarized, and then the stability of tunnel surrounding rock is analyzed. The main contents of monitoring and measuring technology are introduced. Finally, based on the construction case of a tunnel in Xinjiang, the monitoring data of grid arch frame steel bar meter are introduced. After primary support, the monitoring data of surrounding rock convergence deformation and the stress monitoring data of secondary lining reinforcement are interpreted. Through regression analysis of convergence data, the relative displacement value of surrounding rock deformation is calculated, and the deformation law of tunnel surrounding rock is mastered. By comparing the calculated relative displacement with the measured displacement, this paper discusses how to ensure the stability of surrounding rock and supporting structure according to the monitoring and measuring data. The results of regression analysis of monitoring data are in good agreement with the actual data. Based on the obtained data, a suitable supporting time is put forward to ensure the safety of the tunnel construction process.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U456.3;TP274

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