新城综合管廊工程施工风险管理研究

武汉科技大学本科毕业论文摘要在当今时代城市快速扩展的大背景之下，传统的地下管线系统正遭遇着前所未有的复杂且棘手的挑战，这便使得集约化程度更高的现代化综合管廊建设模式顺势产生，对保障城市生命线、提升城市综合承载能力起着关键作用。然而综合管廊建设周期漫长、投资规模庞大、技术要求繁杂，还易受地质条件、周边环境、施工工艺等多种不确定因素影响，故而面临诸多潜在工程风险。为保证综合管廊工程安全高效建设，对建设过程中的风险展开系统化识别、评估与管理很有必要。本研究以某新城南部全长约15.78公里的综合管廊工程为研究对象，该工程综合运用了明挖现浇、矩形顶管和圆形盾构等多种先进施工工艺。研究先借助案例分析法，仔细剖析该工程具体特点，如复杂地质条件、敏感周边环境及多样化施工工艺，全面梳理工程建设中可能碰到的各类问题及对应解决方案。接着运用层次分析法对潜在工程风险因素进行系统识别与量化管理，构建全面且具针对性的施工风险指标体系，研究结果显示，在该工程中，环境风险最为突出。其次是顶管法和盾构法施工时可能遇到的风险，像顶管后座支撑变形、洞口漏水土体流失、盾构掘进轴线偏差等关键问题，运用科学权重分析方法，可有效辨别不同风险因素间相对关键性的差异，为后续制定风险管控措施奠定关键决策基础。依据关键风险因素的识别成果，本研究构建了与之相适配的风险管控对策体系，该体系有系统性的特点，涉及环境风险管理、明挖法风险管理、顶管法风险管理和盾构法风险管理等多方面。依靠实施系统化风险管理与针对性应对策略，能有效降低综合管廊建设过程中的各种风险，保障工程安全顺利进行，促进城市基础设施建设可持续发展，为城市繁荣稳定奠定坚实基础。关键字：城市综合管廊：施工：风险管理武汉科技大学本科毕业论文AbstractWith the accelerating process of urbanization,urban infrastructure construction facesincreasingly complex and diverse challenges.Utility tunnels,as an intensive and modernapproach to urban underground pipeline construction,play a crucial role in safeguarding thelifelines of a city and enhancing its overall carrying capacity.However,utility tunnel projectsare characterized by long construction cycles,large investment scales,complex technicalrequirements,and are susceptible to various uncertainties such as geological conditions,surrounding environments,and construction techniques.Therefore,it is essential tosystematically identify,assess,and manage potential risks during the construction process toensure the safe and efficient construction of utility tunnels.This study focuses on a utility tunnel project in the southern part of a new town,with atotal length of approximately 15.78 kilometers.This project employs a combination ofadvanced construction methods,including open-cut cast-in-place,rectangular pipe jacking,and circular shield tunneling.The research begins with an in-depth case analysis,meticulously examining the project's specific characteristics,such as complex geologicalconditions,sensitive surrounding environments,and diverse construction techniques.Itcomprehensively reviews potential issues that may arise during the construction process andtheir corresponding solutions.Subsequently,the Analytic Hierarchy Process (AHP)isemployed to systematically identify and quantify potential engineering risk factors,and acomprehensive and targeted construction risk indicator system is constructed.The resultsindicate that environmental risks are the most prominent in this project,followed by risksassociated with pipe jacking and shield tunneling methods.Key issues include deformation ofthe pipe jacking rear support,soil loss due to portal leakage,and deviations in the shieldtunneling axis.Through scientific weight analysis,the relative importance of each risk factoris further clarified,providing crucial decision-making support for developing targeted riskresponse strategies.武汉科技大学本科毕业论文Finally,this study proposes corresponding risk mitigation strategies for the identified keyrisk factors,covering various aspects such as environm