| 大直径泥水盾构复合地层速凝浆液的同步注入技术 |
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| 引用本文： | 洪开荣,杜闯东,任成国.大直径泥水盾构复合地层速凝浆液的同步注入技术[J].北京交通大学学报(自然科学版),2011,35(3). |
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| 作者姓名： | 洪开荣 杜闯东 任成国 |
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| 作者单位： | 北京交通大学土木建筑工程学院,北京100044;中铁隧道集团有限公司,河南洛阳471009;中铁隧道集团有限公司,河南洛阳,471009 |
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| 摘 要： | 在大直径泥水盾构施工中,由于大断面隧道所承受的浮力大和泥水对浆液的稀释及通过富水复合地层等不利条件,同步注浆效果大受影响.本文结合正在施工的盾构隧道施工情况进行研究分析,通过对盾构原有注浆设备和管路优化改造,由传统的同步注入单液水泥砂浆改造为同步注入复合浆液,达到了同步注入速凝浆液的目的,并通过在施工中加强过程控制和采取辅助措施,解决了因同步注浆效果差造成的管片上浮及开裂等技术难题,取得了很好的效果.
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| 关 键 词： | 泥水盾构 大直径 复合地层 速凝浆液 同步注浆 管片上浮 |
Technology for simultaneous injection of rapid-setting grout in complex strata:case study on large-diameter slurry shield |
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| HONG Kairong,DU Chuangdong,REN Chengguo.Technology for simultaneous injection of rapid-setting grout in complex strata:case study on large-diameter slurry shield[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2011,35(3). |
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| Authors: | HONG Kairong DU Chuangdong REN Chengguo |
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| Institution: | HONG Kairong1,2,DU Chuangdong2,REN Chengguo2(1.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China,2.China Railway Tunnel Group Co.,Ltd.,Luoyang 471009,Henan,China) |
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| Abstract: | Due to the large buoyancy that the large cross-section tunnels bearing,the dilution of the grout caused by slurry and the bad conditions of the water-rich complex strata,the effect of the simultaneous grouting in the boring of large-diameter slurry shields is greatly affected.In the construction of a shield-bored tunnel,the original grouting equipment and the pipelines are optimized and the traditional simultaneous single-component grout is replaced by simultaneous complex rapid-setting grout.In the end,the... |
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| Keywords: | slurry shield large diameter complex strata rapidsetting grout simultaneous grouting segment uplift |
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