砂泥岩地层大直径盾构隧道掘进刀盘泥饼问题成因分析及解决措施研究  

Analysis of the Formation Causes of Cutterhead Mud Cakes in Large-diameter Shield Tunnels Excavated in Sandy Mudstone Strata and Research on Construction Measures

作　　者：檀东钊 董振倓 宋卓 Tan Dongzhao;Dong Zhentan;Song Zhuo(Road&Bridge International Co.,Ltd.,Beijing 101100;China Communications Construction Corporation Rail Transit Branch,Beijing 101100)

机构地区：[1]中交路桥建设有限公司,北京101100 [2]中国交通建设股份有限公司轨道交通分公司,北京101100

出　　处：《现代工程科技》2025年第3期25-28,共4页Modern Engineering Technology

摘　　要：随着大直径盾构隧道技术在地铁、铁路、公路等工程中的广泛应用,其在复杂地层条件下的施工难题逐渐显现。在砂泥岩地层中施工时,由于地层具有高黏性、高含泥量与含水量变化大的特点,掘进过程中刀盘泥饼问题屡见不鲜。这一问题不仅导致掘进效率大幅降低,还加剧刀具磨损,甚至可能引发刀盘卡滞等工程故障,对施工进度和工程质量造成严重影响。针对这一施工难题,从泥饼形成的机理、掘进施工的关键影响因素及解决方案三方面展开深入研究。研究结果表明,刀盘泥饼的形成受地层特性、刀盘设计(如开口率和刀具布置)及施工参数(如推进速度、土压平衡、渣土改良)综合影响。提出了包括优化刀盘设计、开展土体改良试验、动态调整施工参数以及改进冲洗系统在内的一系列优化策略,为在复杂地层条件下进行盾构施工提供了理论指导与实践经验。With the widespread application of large-diameter shield tunnel technology in projects such as subways,railways,and highways,the construction problems under complex stratum conditions gradually emerge.When constructing in sandy mudstone strata,due to the characteristics of high viscosity,high mud content,and large variations in water content of the strata,the problem of cutterhead mud cakes during the excavation process is quite common.This problem not only significantly reduces the excavation efficiency but also intensifies the wear of cutters,and may even lead to engineering failures such as cutterhead jamming,which seriously affects the construction progress and project quality.Aiming at this construction problem,this paper conducts an in-depth study from three aspects:the formation mechanism of mud cakes,the key influencing factors of excavation construction,and the solutions.The research results show that the formation of cutterhead mud cakes is comprehensively affected by the stratum characteristics,cutterhead design(such as the opening rate and cutter arrangement),and construction parameters(such as the propulsion speed,earth pressure balance,and muck improvement).This paper proposes a series of optimization strategies,including optimizing the cutterhead design,carrying out soil improvement tests,dynamically adjusting construction parameters,and improving the flushing system,which provides theoretical guidance and practical experience for shield construction under complex stratum conditions.

关 键 词：隧道工程 盾构隧道 刀盘泥饼 

分 类 号：TU43[建筑科学—岩土工程]