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隧道建设(中英文) ›› 2014, Vol. 34 ›› Issue (2): 95-100.DOI: 10.3973/j.issn.1672-741X.2014.02.001

• 研究与探索 •    下一篇

盾构隧道快硬高性能同步注浆材料研究

徐建平1, 林文书1, 许可1, 林建平2, 王彪3, 苗强3, 丁庆军3   

  1. (1.武汉地铁集团有限公司, 湖北 武汉 430030; 2.中铁一局集团有限公司, 陕西 西安 710054; 3.武汉理工大学, 湖北 武汉 430070)
  • 收稿日期:2013-07-19 修回日期:2013-12-20 出版日期:2014-02-10 发布日期:2014-02-27
  • 作者简介:徐建平(1971—),男,湖北恩施人,2006年毕业于武汉理工大学,材料学专业,博士,教授级高级工程师,主要从事隧道工程的建设工作。

Study on Rapidhardening Highperformance Simultaneous  Grouting Material for Shieldbored Tunnels

XU Jianping1, LIN Wenshu1, XU Ke1, LIN Jianping2, WANG Biao3, MIAO Qiang3, Ding Qingjun3   

  1. (1. Wuhan Metro Group Co., Ltd., Wuhan 430030, Hubei, China; 2. China Railway First Group Co., Ltd., Xi’an 710054, Shaanxi, China; 3.Wuhan University of Technology, Wuhan 430070, Hubei, China)
  • Received:2013-07-19 Revised:2013-12-20 Online:2014-02-10 Published:2014-02-27

摘要:

为满足某些特殊盾构工况(地下水流大、断面水压高、冲刷力强)注浆工程及抢修、补注工程的顺利施工,需研制具有快硬、抗水分散性和稳定性好等特点的高性能同步注浆材料。以42.5快硬硫铝酸盐水泥(R.SAC42.5)、粉煤灰(FA)、矿渣微粉(SL)和砂作为基体材料,采用聚羧酸减水剂(PC)-膨润土(BE)-三乙醇胺早强剂(TEA)的复合保水、稳定、早强外加组分,优选配合比为R.SAC42.5∶FA∶SL∶BE∶砂∶水∶PC∶TEA=1∶3∶1∶0.5∶10∶2.25∶0.03∶0.08%,制备出初始流动度为210 mm、泌水率为014%、浆液pH值为9.6、1 d抗压强度为2.5 MPa的盾构隧道快硬高性能同步注浆材料。

关键词: 盾构隧道, 同步注浆, 快硬硫铝酸盐水泥, 膨润土, 早强剂

Abstract: performance simultaneous grouting material with properties including rapid hardening, antwaterdispersion and good stability is needed in order to meet the requirements of the simultaneous grouting in shield tunneling under large water flow conditions, high water pressure conditions and high water flushing conditions. Rapidhardening highperformance simultaneous grouting material with 210 mm initial fluidity, 0.14% water bleeding rate, 9.6 pH value, and 2.5 MPa 1day compressive strength is obtained, with 42.5 rapid hardening sulphoaluminate cement (R. SAC42.5), fly ash(FA), slag(SL) and sand used as the main matrix materials, and waterreducing admixture(PC)bentonite(BE)triethanolamine accelerator(TEA) used as the water retaining, stable, and early strength additive components. The optimum mix of the rapidhardening highperformance simultaneous grouting material is that: R.SAC42.5∶FA∶SL∶BE∶sand∶water∶PC∶TEA=1∶3∶1∶0.5∶10∶2.25∶0.03∶0.08%. 

Key words: shieldbored tunnel, simultaneous grouting, rapid hardening sulphoaluminate cement, bentonite, rapid hardening agent