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[1]周麟,毛文,施墨华.盾构隧道同步注浆浆液配合比优化设计[J].武汉工程大学学报,2013,(09):29-33.[doi:103969/jissn16742869201309006]
　ZHOU Lin,MAO Wen,SHI Mo\|hua.Optimized design of grout mix proportion for synchronous grouting in shield tunneling[J].Journal of Wuhan Institute of Technology,2013,(09):29-33.[doi:103969/jissn16742869201309006]
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盾构隧道同步注浆浆液配合比优化设计(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2013年09期
页码:
29-33
栏目:
资源与土木工程
出版日期:
2013-10-10

文章信息/Info

Title:
Optimized design of grout mix proportion for synchronous grouting in shield tunneling
文章编号:
16742869(2013)09002905
作者:
周麟; 毛文; 施墨华
武汉工程大学环境与城市建设学院，湖北 武汉 430074
Author(s):
ZHOU Lin;  MAO Wen;  SHI Mo\|hua
School of Environmental and Civil Engineering, Wuhan Institute of Technology, Wuhan 430074, China
关键词:
盾构法; 水泥砂浆; 正交试验设计; 配合比
Keywords:
shield tunneling method;  cement mortar;  orthogonal experiment design;  mix proportion
分类号:
TU50
DOI:
103969/jissn16742869201309006
文献标志码:
A
摘要:
盾构法施工过程中，盾尾同步注浆对控制隧道轴线上浮和地面沉降起着至关重要的作用.为使盾构隧道同步注浆浆液具有较好的工作性能，选用水泥、粉煤灰、膨润土、砂、水作为原材料，采用正交设计的方法进行试验，探讨了浆液各原材料对浆液稠度、凝结时间、泌水率、7 d抗强度等指标的影响规律及同步注浆浆液配比的优化方向.试验表明：水泥是影响凝结时间和抗压强度的主要因素，水泥的加入能够缩短凝结时间、增大抗压强度和降低泌水率；粉煤灰能改善浆液和易性；膨润土有增稠、保水的作用，能提高浆液稳定性，但掺量要控制在一定范围内；砂作为浆液骨料起填充作用，主要影响浆液稠度，砂的用量与浆液稠度大小呈反比趋势；水是影响泌水率的主要因素，用水量增加导致浆液泌水率、稠度增大，凝结时间变长.最优的配合比为：水泥∶粉煤灰∶膨润土∶砂∶水为160∶400∶50∶830∶360，制备的浆液稠度为11～12 cm，凝结时间为10～13 h，泌水率不高于3%，7 d抗压强度不低于2 MPa.
Abstract:
Synchronous grouting plays a vital role in control of tunnel axis floating and the ground settlement in the construction of shield tunnel. To improve the workability of the grout for synchronous grouting, the influence of raw materials which were cement,fly, ash,bentonite, sand and water on the grout consistency, setting time, bleeding rate and compressive strength and the trend of the optimization of the mix proportions of synchronous grouting were studied by orthogonal experiment. The results show that cement is the main influencing factor for setting time and compressive strength, setting time shortens and compressive strength increases, bleeding rate decreases with the increase of cement proportion; fly ash can improve the work ability of grout; bentonite has certain effects on thickening and water retention, and can improve the stability of grout, but its content should be limited in a certain range; sand is used as aggregates and mainly effects consistency, its content in inverse proportion to grout consistency; water consumption is the main factor influencing grout bleeding rate, the grout bleeding rate and consistency increase, setting time lengthens with the increase of water consumption. The optimized mix proportion is cement: fly ash∶bentonite∶sand∶water=160∶400∶50∶830∶360,and the grout consistency is 11\|12 cm,setting time is 10\|13 h,bleeding rate is less than 3% and compressive strength after 7 d is not less than 2 MPa.

参考文献/References:

\[1\]田焜. 高性能盾构隧道同步注浆材料的研究与应用\[D\]. 武汉: 武汉理工大学, 2007.Tian Kun. Study and Application on High Property Grouting Material used in Synchronous Grouting of Shield Tunnelling\[D\]. Wuhan: Wuhan University of Technology, 2007.（in Chinese）\[2\]周东, 李明文. 盾构隧道施工中同步注浆新材料的实验研究\[J\]. 地下工程与隧道, 2002(1): 10\|13.Zhou Dong, Ling Mingwen. Experimental Study on new Grouting Materials of Synchronous Grouting during Shield Tunnel construction\[J\]. Tunnel and Underground Engineering, 2002(1): 10\|13.(in Chinese)\[3\]李为夫. 水泥\|粘土\|粉煤灰浆材的工程性质研究\[D\]. 长沙: 中南大学, 2005.　　Li Weifu. Study on Engineering Property of Cement\|Cly\|Fly ash\[D\]. Changsha: Central south university, 2005.(in Chinese) \[4\]王新杰, 王元湘. 注浆技术在我国地铁工程中的应用\[M\]. 北京: 中国建筑工业出版社, 1996.Wang Xinjie, Wang Yuanxiang.Application of Grouting Technology in the Metro Engineering of our Country\[M\]. Beijing: China Architecture & Building Press, 1996.(in Chinese)\[5\]陈新年, 谷拴成. 微细或超细水泥类注浆材料及其性能\[J\]. 西安矿业学院学报, 1998, 19（增刊）: 91\|94.Chen Xinnian, Gu Shuancheng. Grouting Material of Finy or Superfine Cement and its Function\[J\]. Journal of Xi’an Mining Institute, 1998,19(z1): 91\|94.(in Chinese)\[6\]曹宏, 罗丽. 白云石砂为骨料高强混凝土的制备\[J\]. 武汉工程大学学报, 2013, 35(3): 57\|61.Cao Hong, Luo Li. Preparation of high strength concrete with dolomite sand as aggregate\[J\]. Journal of Wuhan Institute of Technology, 2013, 35(3): 57\|61.(in Chinese)\[7\]崔玖江, 崔晓青. 隧道与地下工程注浆技术\[M\]. 北京: 中国建筑工业出版社, 2010.Cui Jiujiang, Cui Xiaoqing. Grouting Technology in Tunnel and Underground Engineering\[M\]. Beijing: China Architecture & Building Press, 2010.(in Chinese)

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备注/Memo

备注/Memo:
收稿日期：20130605作者简介：周麟(1964\|)，男，重庆人，副教授，硕士.研究方向：工程结构分析及灾害控制.
更新日期/Last Update: 2013-10-11