近接采空区隧道施工控制技术研究

发布时间：2018-05-01 01:32

本文选题：铁路隧道 + 采空区　；参考：《石家庄铁道大学》2015年硕士论文

【摘要】：随着我国交通建设的进展,近接采空区的公路隧道、铁路隧道不断涌现,如何确保近接采空区工程的施工安全和运营安全逐渐成为工程界所面临的突出课题。因此本文以娄邵铁路扩能改造工程中的明清堂隧道为工程背景,针对穿越既有采空区隧道施工技术问题,主要进行了下几个方面的研究工作:(1)运用数值模拟手段,建立三维有限元模型进行计算,分析下穿采煤巷道时隧道开挖所引起的拱顶下沉、仰拱隆起、水平收敛值等洞周变形,以及掌子面及洞周塑性区深度及范围等。(2)运用数值模拟手段,研究穿越露天采空区对隧道稳定性的影响程度,从洞周位移、支护内力和塑性区分布等方面通过比较分析结合实际施工情况综合确定适合明清堂隧道的施工方法。(3)根据明清堂隧道的工程特点,分析研究近接采空区隧道施工控制技术和既有采空区处治、加固措施,为工程顺利施工提供技术保障。
[Abstract]:With the development of traffic construction in our country, the highway tunnel and railway tunnel near goaf are emerging constantly. How to ensure the construction safety and operation safety of the near goaf project has gradually become an outstanding subject in the engineering field. Therefore, taking the Ming and Qing Tang Tunnel in the Loushao Railway capacity expansion Project as the engineering background, aiming at the technical problems of tunnel construction through the existing goaf, this paper mainly carries out the next several aspects of research work: 1) using numerical simulation means. The three-dimensional finite element model is established to calculate the deformation around the tunnel caused by tunnel excavation, such as vault uplift, horizontal convergence and so on. And the depth and range of plastic zone around the face of the palm and the hole, etc.) using the numerical simulation method, the influence of crossing the open pit goaf on the tunnel stability is studied, and the displacement around the tunnel is studied. According to the engineering characteristics of the Ming and Qing Tang Tunnel, the construction method suitable for the Ming and Qing Tang Tunnel is determined by comparing and analyzing the actual construction conditions in such aspects as the supporting internal force and plastic distinguishing cloth. This paper analyzes and studies the construction control technology of the tunnel in the near goaf and the treatment and reinforcement measures of the existing goaf to provide the technical guarantee for the smooth construction of the project.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U455.4

【参考文献】