随着大直径泥水盾构的广泛应用，盾构在黏性土地层刀盘堵塞及渣土饼化问题日益突出。综合运用理论分析、数值计算、室内试验和现场数据分析相结合的方法，研究泥水盾构刀盘-土体摩擦生热效应、渣土粘附和刀盘堵塞机制、渣土固结饼化及控制问题。盾构刀盘-土体摩擦生热效应的研究，旨在调查渣土温度与盾构设备参数（如刀盘开口率、刀盘形状等）、盾构关键掘进参数（刀盘转速、推力、扭矩等）之间的关系，搞清渣土温度场的时空规律和变化特征；采用自制的试验设备，重点考虑渣土温度和泥水压力环境的影响，研究盾构设备粘附、堵塞发生机制；刀盘堵塞加剧了刀盘-土体间的摩擦生热效应和渣土的失水固结，在室内试验得到高温作用下黏性土性状演化机制的基础上，研究热-力耦合作用下泥水盾构的渣土饼化及扩展机理；主要从泥饼形成风险判别标准及评价指标体系、刀盘设计及刀具布置原则、泥饼防治施工控制三方面入手，研究“泥饼”预防、控制措施和方案。

With the wide use of the large diameter slurry shield, the problem of cutter head clogging and muck caking during shield tunneling in clayey soils is outstanding day by day. Using the method of theoretical analysis, numerical calculation, indoor test and field data analysis, the issues of friction heating between cutting wheel and soil, soil adhesion and cutter head clogging, soil solidification and caking, and corresponding control technologies are studied. The study on friction heating aims at investigating the relatinship between soil temperature and shield equipment parameters (such as cuttter head opeing area ratio, cutter head shape), key shield operational parameters (such as cutter head rotation speed, torque and shield total thrust), and understanding the spatio-temporal law and distribution characteristics of the soil temperature field. Using the self-made test device and giving more considration on soil temperature and the slurry pressure environment, the mechanism of soil adhesion and clogging is investigated. Cutter head clogging aggravates the heating effect between soil and cutting wheel and the soil caking due to water loss. Based on unstanding the property development law of the clayey soil on high temperature by indoor tests, the soil caking formation and extension mechanism of slurry shield is investigated under the action of thermal-mechanical coupling. Counter measures and schemes against soil caking are studied mainly from the three aspects of judgement standard and evaluation system of the soil caking risk, cutter head design and layout of cutting tools, and construction control against soil caking.