信息反馈技术在牛头山隧道施工中的应用

发布时间：2018-12-16 01:06

【摘要】：随着我国交通系统的不断完善,特别是近几年大量高速铁路隧道工程陆续开工建设,其工程地质条件也日趋复杂,过去单纯的经验施工和工程类比法已不能满足现场施工的实际需要,必须通过现场实时监测,获取隧道的围岩变化规律,并及时对其进行预处理分析,将分析结果及时反馈于业主、设计单位、监理及施工单位,以便各单位对隧道变形做出科学预测并优化改善隧道设计及其开挖支护方案,以降低施工成本,提高施工速度。本文以牛头山隧道开挖为工程背景,对信息反馈技术在隧道施工中的应用进行研究,主要内容有:首先,根据牛头山隧道实际围岩情况、施工情况,确定适合牛头山隧道施工的隧道监测方案,并选择科学合理的监测断面布点方式;其次,实时监测各设计监测断面监测项目,对监测数据进行预处理,并建立六种函数回归模型,利用origin软件对预处理结果通过六种回归模型进行比较分析,获得围岩变形、拱顶收敛及地表沉降规律函数;最后,对回归函数进行求导,获得围岩变形、拱顶收敛及地表沉降速率变化函数,绘制变化曲线,对牛头山隧道开挖方案和支护方案进行优化,并通过试验段对优化效果进行了验证,结果表明优化方案是科学合理的。信息反馈技术在牛头山隧道中的成功运用极大降低了牛头山隧道施工风险,提高了工程质量,对其他各类工程施工也具有借鉴意义。
[Abstract]:With the continuous improvement of the transportation system in China, especially the construction of a large number of high-speed railway tunnel projects in recent years, the engineering geological conditions are becoming more and more complex. In the past, the simple experience construction and the engineering analogy method can not meet the actual needs of the field construction. It is necessary to obtain the change law of the surrounding rock of the tunnel through the real time monitoring on the spot, and carry on the preprocessing analysis to it in time. The analysis results are fed back to the owners, design units, supervision and construction units in time, so that each unit can make scientific prediction of tunnel deformation and optimize and improve the tunnel design and excavation support scheme, so as to reduce the construction cost and improve the construction speed. Taking Niutoushan tunnel excavation as the engineering background, this paper studies the application of information feedback technology in tunnel construction. The main contents are as follows: first, according to the actual surrounding rock condition of Niutoushan tunnel, the construction situation, Determine the tunnel monitoring scheme suitable for Niutoushan tunnel construction, and choose a scientific and reasonable monitoring section distribution method; Secondly, the monitoring items of monitoring sections are monitored in real time, the monitoring data are pretreated, and six kinds of function regression models are established. The results of preprocessing are compared and analyzed by six regression models using origin software, and the deformation of surrounding rock is obtained. The law function of arch roof convergence and surface subsidence; Finally, the derivation of the regression function is carried out, and the deformation of surrounding rock, the convergence of arch roof and the change function of surface subsidence rate are obtained, the change curve is drawn, and the excavation scheme and supporting scheme of Niutoushan tunnel are optimized. The results show that the optimization scheme is scientific and reasonable. The successful application of information feedback technology in Niutoushan tunnel has greatly reduced the construction risk of Niutoushan tunnel, improved the engineering quality, and also has reference significance for other kinds of engineering construction.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U455.4

【参考文献】