兰州市污水全收集工程管道施工工艺及顶管技术研究

发布时间：2018-06-18 04:50

本文选题：污水全收集 + 施工工艺　；参考：《兰州交通大学》2015年硕士论文

【摘要】：2008年,国务院提出“力争用两年时间在36个大城市率先实现污水全部收集和处理”。按照兰州市污染物减排的需要,2010年必须实现城区污水“全收集,全处理”的工作目标。目前,城市基础设施建设投入不足,排水设施建设有所欠缺,城区排水管网与国家要求的有一定距离。截至2009年,兰州四区共有排水管网656公里,其中上世纪80年代前的管网301公里,占全部管网的46%,这些管网存在陈旧老化,雨水污水不分流等问题,并且城市部分地区排水管网无覆盖。兰州正在组织实施的城区污水“全收集全处理”工程,需要建设357公里管网、五座污水提升泵站、三座污水处理厂,特别是今年要完成主体工程,工作量非常大,工期非常紧张。目前,在现有排水管道工程的理论基础上,顶管施工探索出了新的施工工艺,在建筑物较多的大城市,管网铺设工作通常需要顶管工程技术。本文以顶管施工技术为核心,结合我国排水管道施工工艺,顶管技术理论知识和实际经验,借鉴了国内外对污水收集管道施工的研究成果,讨论了管道施工过程中的设计和控制技术,运用了风险分析的相关知识,对顶管技术实施中的风险进行分析。主要成果如下:(1)通过研究排水管道工程的相关理论知识,分析了现有排水管道的施工工艺,对兰州市污水全收集工程管道施工工艺进行确定,顶管施工法是兰州市污水全收集工程管道施工工程的最佳选择。(2)探讨了顶管法的施工工艺的基本原理,由工具管或顶管掘进机、工作井和接收井、顶铁、主顶装置中继站、基坑导轨、后座墙、顶进用管、输土装置、地面起吊装置、测量及校正系统、注浆系统、供电及照明系统、通风与换气系统和辅助施工等组成,每一个系统的相辅相成组成了排水管道工程。(3)为了保证施工过程的顺利进行,我们对施工工艺及其施工过程进行了详细的描述,并对施工中常见的问题及施工中的主要控制点进行了总结。在顶管技术施工过程中,施工人员要时刻注意导轨偏移、洞口止水圈撕裂或外翻、后靠背严重支形、位移或损坏、主顶油缸偏移及顶管机出洞防磕头等问题。同时在施工过程中应十分关注减摩注浆、中继间布置和工作坑的选取和设置等问题,以保证施工的准确度及效率。(4)结合国内外管道工程的相关经验,对较多实际工程资料的收集,探讨出施工过程存在地下不明管线及障碍物等风险,及其这种风险所造成的整个工程的停滞分析。主要分析污水全收集中所采用的施工技术,对顶管工程实施中延误工期的各种风险因素进行了研究和分析,介绍了管道工程的应用及其对环境的影响进行分析,为以后顶管施工提供了借鉴。
[Abstract]:In 2008, the State Council proposed to "strive to take the lead in 36 major cities in two years to achieve all sewage collection and treatment." According to the need of pollutant emission reduction in Lanzhou City, the goal of "full collection and treatment" of urban sewage must be realized in 2010. At present, the construction of urban infrastructure is insufficient, the construction of drainage facilities is deficient, and the urban drainage network has a certain distance from the requirements of the state. As of 2009, the four districts in Lanzhou have a total of 656 km of drainage networks, of which 301 km were before the 1980s, accounting for 46% of the total pipe networks. These networks are old and aging, and Rain Water sewage is not diverted. And part of the city drainage pipe network without coverage. Lanzhou is organizing and implementing the urban sewage "total collection and full treatment" project, which requires the construction of 357 kilometers of pipe networks, five sewage lifting pumping stations, and three sewage treatment plants, especially the major projects to be completed this year. The workload is very large. The time limit is very tight. At present, on the basis of the theory of drainage pipe engineering, a new construction technology has been explored in pipe jacking construction. Pipe jacking engineering technology is usually required for pipe network laying in large cities with more buildings. Based on the pipe-jacking construction technology, combined with the construction technology of drainage pipeline in China, the theoretical knowledge and practical experience of pipe-jacking technology, the research results of sewage collection pipeline construction at home and abroad are used for reference in this paper. This paper discusses the design and control technology of pipeline construction and analyzes the risk in the implementation of pipe jacking technology by using the relevant knowledge of risk analysis. The main results are as follows: (1) by studying the relevant theoretical knowledge of the drainage pipeline project, the author analyzes the construction technology of the existing drainage pipeline, and determines the pipeline construction technology of the total sewage collection project in Lanzhou. Pipe jacking construction method is the best choice of pipeline construction project in Lanzhou sewage collection project. The basic principle of pipe jacking method is discussed. The pipe jacking roadheader, working well and receiving well, top iron and main roof device relay station are used. Foundation pit guide rail, backseat wall, jacking pipe, earth conveyer, ground lifting device, measurement and correction system, grouting system, power supply and lighting system, ventilation and ventilation system and auxiliary construction, etc. In order to ensure the smooth progress of the construction process, we describe the construction technology and its construction process in detail. The common problems in construction and the main control points in construction are summarized. During the construction of pipe jacking technology, the constructors should always pay attention to the deviation of the guide rail, tear or roll out of the sealing ring of the hole, the serious back of the back, displacement or damage, the displacement of the main oil cylinder and the prevention and kowtowing of the pipe jacking machine. At the same time, in order to ensure the accuracy and efficiency of construction, we should pay close attention to the problems of anti-friction grouting, relay layout and selection and setting of working pits in order to ensure the relevant experience of pipeline engineering at home and abroad, so as to ensure the accuracy and efficiency of construction. Based on the collection of more practical engineering data, it is discussed that there are some risks in the construction process, such as underground pipelines and obstacles, and the analysis of the stagnation of the whole project caused by this kind of risk. This paper mainly analyzes the construction technology used in the total collection of sewage, studies and analyzes various risk factors of the delay in the implementation of pipe jacking project, and introduces the application of pipeline engineering and its impact on the environment. It provides reference for pipe jacking construction in the future.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU992.05

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