铁道标准设计2024，Vol.68Issue(7)：154-161,170,9.DOI:10.13238/j.issn.1004-2954.202210300001
复合地层加强型盾构对比选型技术与滚刀磨损特征研究
Compare-method of Tunneling Machine Lectotype and Cutter Wear Feature of the Targeted-strengthen Shield in the Composite Stratum
摘要
Abstract
To deal with the difficulty that empirical methods cannot quantitatively evaluate the adaptability and economy of tunneling machine type selection under complex geological conditions,the shield/TBM comparative selection method is proposed.Based on the comprehensive classification of the stratum,the complex strata are divided into several independent sections according to the characteristics of rock in the tunnel face,groundwater,environment and other factors.The construction efficiency and construction cost of different types of tunneling equipment in each section are calculated and compared.After a comprehensive summary,the quantified efficiency,schedule,and economic indicators of various types of equipment are given.Decision-makers can make conclusions according to the central control factors of the project.In addition,combined with the example of a tunnel project that includes both hard rock and unfavorable geology,the adaptability of the targeted-strengthen shield to this kind of stratum is analyzed,the configuration parameters and targeted design of this machine are offered,and the regression analysis of the cutter wear in the hard rock section is carried out.The results show that:(1)The shield/TBM comparison selection technology comprehensively considers the applicability,construction efficiency,and construction cost of different equipment in each tunnel segment,making the selection decision more scientific and practical;(2)Equipped with 6r/min cutterhead rotation speed and 19-inch large diameter disc cutter,the targeted-strengthen shield could significantly improve the tunneling efficiency,so it is adaptable to hard rock and unfavorable geology;(3)There is an exponential correlation between the cumulative wear amount of targeted-strengthen shield disc cutter and its installation radius,and the wear rate of edge cutter is the highest.Timely maintenance of cutters should be conducted during construction to ensure adequate excavation diameter.关键词
复合地层/机械法掘进/加强型盾构/对比选型/地层组段划分/滚刀/刀具磨损Key words
composite stratum/mechanical tunneling/targeted-strengthen shield/comparison and lectotype/classification of stratum/disc cutter/cutter wear分类
交通工程引用本文复制引用
刘泉维,邵小康,纪明涛,刘林胜,叶守杰,江玉生,杨志勇,张西昌..复合地层加强型盾构对比选型技术与滚刀磨损特征研究[J].铁道标准设计,2024,68(7):154-161,170,9.基金项目
国家自然科学基金项目(U1261212) （U1261212）
