泥水盾构江底掘进泥饼形成机理研究
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摘要
随着近年来地下空间工程的大规模兴建,越来越多的城市轨道交通工程、市政工程等采用盾构技术施工,特别是在黏性土掘进过程中,泥饼的预防和治理是现场亟待解决的问题之一。以衡阳二环东路合江套湘江隧道为背景,通过掌子面原状土电镜试验和掘进参数正交试验,揭示了泥水盾构江底掘进中刀盘泥饼的形成机理,奠定了泥饼防治的理论基础,研究成果解决了现场实际问题。
With the large-scale construction of underground engineering in recent years,the shield tunneling technology was used more and more universally in city rail traffic and municipal engineering.Especially,the prevention and control method of mud cake is one of the problems which need to be solved in clay layer excavation process. Based on Hejiang-Xiangjiang Tunnel,which is the control engineering in eastern road of Hengyang Second Ring,this paper tries to reveal the forming mechanism of mud cake in tunneling process of slurry shield by electron microscopy test and orthogonal test. All in all,this paper makes a theoretical foundation of mud cake treatment.
With the large-scale construction of underground engineering in recent years,the shield tunneling technology was used more and more universally in city rail traffic and municipal engineering.Especially,the prevention and control method of mud cake is one of the problems which need to be solved in clay layer excavation process. Based on Hejiang-Xiangjiang Tunnel,which is the control engineering in eastern road of Hengyang Second Ring,this paper tries to reveal the forming mechanism of mud cake in tunneling process of slurry shield by electron microscopy test and orthogonal test. All in all,this paper makes a theoretical foundation of mud cake treatment.
引文
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[2] ISMAIL A I M,SADEK G D. Acidic rocks as aggregates in concrete:engineering properties,microstructures and petrologic characteristics[J]. Geotechnical and geology engineering,2009(27):519-528.
[3]严辉.盾构隧道施工中刀盘泥饼的形成机理和防治措施[J].现代隧道技术,2007,44(4):24-27.
[4]区穗辉.大直径泥水盾构穿越硬塑状粉质粘土层防治泥饼技术[J].科技展望,2017(2):26-27.
[5]李志军,翟志国,赵康林.泥水盾构刀盘结泥饼形成原因及防治技术[J].地下空间与工程学报, 2014, 10(2):1866-1871.
[6]陈乔松,刘德智,杨军宁,等.泥水平衡盾构机刀盘泥饼形成机理及防治技术[J].长沙铁道学院学报(社会科学版),2011,12(2):214-215.
[7]黄博,史海栋,凌道盛,等.两种粉质黏土的动、静强度特性对比研究[J].岩土力学,2012,33(3):665-673.
[8]苏华,汪在芹,李珍.盾构砂浆优化设计的支持向量机方法[J].水运工程,2007(2):39-41,47.
[9] HADIZADEH J,MITTEMPERGHER S,GRATIER J P,et al. A micro structural study of fault rocks from the SAFOD:Implications for the deformation mechanisms and strength of the creeping segment of the San Andreas Fault[J]. Journal of structural geology,2012(42):246-260.
[10]赵三宝.岩溶地区超浅覆土泥水盾构开仓换刀及泥饼处理技术[J].工程建设与设计,2017(9):165-168,171.
[11]孙波,傅鹤林,张加兵.基于修正惯用法的水下盾构管片的内力分析[J].铁道科学与工程学报,2016,13(5):929-937.
[12]刘康,侯子义.喷射混凝土性能影响因素的试验研究[J].施工技术,2014,43(S2):306-310.