山区库岸公路路基变形稳定监测及病害防治技术

发布时间：2018-03-24 16:54

本文选题：库岸公路路基　切入点：监测　出处：《重庆交通大学》2014年硕士论文

【摘要】：随着我国交通事业的不断发展,山区的交通状况得到了极大的改善。但由于受地形限制和满足公路展线的要求,大多数山区公路多展布于沿河或沿溪线。而山区的河流或溪流,其纵坡比往往比较大,受季节性径流的影响非常显著。在雨季常常由于降雨量的突变而引起水库、河流等水位的突升或突降。而这个过程对库岸路基的稳定性有着显著的影响。一方面,水位的上升和浸泡会造成路基部分岩土体的抗剪力学参数降低；另一方面,库岸路基边坡由于水力条件的突然变化引起的边坡稳定性问题尤为突出。因此,开展山区库岸公路路基变形稳定监测及病害防治技术研究显得尤为重要。论文在总结现有研究成果的基础上,通过理论分析、实际工程运用等方法和手段,对山区库岸公路路基变形监测与病害处治技术进行了较为全面和系统的研究,得到的主要研究成果如下：为了了解对库区公路边坡、支挡结构的运营状况,分析其主要病类型,项目组对重庆、四川、云南、陕西等省市库岸公路进行了调研,历时近1个月,初步掌握了山区公路库岸路基的工作状况以及库岸边坡稳定与安全现状,并将主要调查结果进行了归纳、总结和分析,为课题的研究工作奠定了基础。分析了山区库岸公路路基特点,以及山区水库水流特点及其对库岸公路的影响,初步掌握了山区公路库岸路基的工作状况以及库岸边坡稳定与安全现状,提出了山区库岸公路路基分类方法。从山区库岸公路路基变形、稳定监测、库岸路基变形失稳等病害特点和监测仪器的工作原理出发,综合分析影响库岸路基变形稳定的主要因素及表现形式,观测孔隙水压力、变形量、变形速率、支挡结构承受的荷载等,以及评价路基变形稳定性,为制定养护方案提供参考；并提出了库岸路基观测仪器及其传感器的选型与布置原则,建立了包括现场监测、数据采集、太阳能电源供应、数据无线传输、监控中心、数据管理与分析模块的库岸路基变形稳定监测系统。通过云南文山一都龙二级路这个工程实例分析了库岸路基病害处治的常用方法,主要包括开挖换填,强夯置换,压力灌浆。另外,描述了路基稳定变形稳定远程无线监测的实施方法和结果分析。
[Abstract]:With the continuous development of traffic in our country, the traffic situation in mountainous areas has been greatly improved. However, due to the terrain constraints and the requirements of highway development, most mountain roads are spread along rivers or along creek lines, and rivers or streams in mountainous areas. The ratio of longitudinal slope to slope is usually large and affected by seasonal runoff. In the rainy season, reservoirs are often caused by sudden changes in rainfall. This process has a significant effect on the stability of embankment on the bank of the reservoir. On the one hand, the rise of water level and soaking will cause the shear mechanical parameters of part of the subgrade to decrease; on the other hand, The problem of slope stability caused by sudden change of hydraulic condition is particularly prominent. It is very important to carry out the research on deformation stability monitoring and disease prevention technology of highway roadbed in mountain bank. On the basis of summarizing the existing research results, the paper adopts the methods and means of theoretical analysis, practical engineering application, etc. This paper makes a comprehensive and systematic study on deformation monitoring and disease treatment technology of highway subgrade in mountain reservoir bank. The main research results are as follows: in order to understand the operation status of highway slope and retaining structure in reservoir area, the main disease types are analyzed. The project team conducted an investigation on the highway along the bank of Chongqing, Sichuan, Yunnan, Shaanxi and other provinces and cities, which lasted nearly one month. It preliminarily grasped the working condition of the roadbed on the bank of the mountain road, as well as the current situation of stability and safety of the bank slope. The main investigation results are summarized, summarized and analyzed, which lays a foundation for the research work of this subject, and analyzes the characteristics of roadbed of reservoir bank highway in mountainous area, and the characteristics of reservoir water flow in mountain area and its influence on reservoir bank highway. This paper preliminarily grasps the working condition of the roadbed on the bank of the mountain highway bank and the present situation of the stability and safety of the slope of the bank of the reservoir bank, and puts forward the classification method of the roadbed of the highway in the reservoir bank of the mountain area. Based on the characteristics of roadbed deformation and instability and the working principle of monitoring instrument, this paper comprehensively analyzes the main factors that affect the stability of bank roadbed deformation and its manifestation, and observes pore water pressure, deformation quantity, deformation rate, etc. The load of retaining structure and the stability of roadbed deformation are evaluated to provide reference for establishing maintenance scheme, and the selection and arrangement principle of observation instrument and its sensor are put forward, which include field monitoring, data collection, etc. Solar power supply, wireless data transmission, monitoring center, The deformation stability monitoring system of bank roadbed based on data management and analysis module. Through the engineering example of Wenshan-Dulong secondary road in Yunnan Province, the common methods to deal with subgrade diseases in reservoir bank are analyzed, which mainly include excavation replacement, dynamic tamping replacement, and so on. In addition, the implementation method and result analysis of remote wireless monitoring of roadbed stability and deformation stability are described.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.5

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