Experimental study on polyurethane ring in the replacement of shield tail brush in water-rich sand strata at the coast

LUO Liping; ZHAO Jian; SUN Heng and HUANG Xinmiao; ${author.authorNameEn}

doi:10.12143/j.ztgc.2024.01.021

2024 Vol. 51, No. 1

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Article navigation > DRILLING ENGINEERING > 2024 > 51(1): 154-160

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LUO Liping, ZHAO Jian, SUN Heng and HUANG Xinmiao, . 2024. Experimental study on polyurethane ring in the replacement of shield tail brush in water-rich sand strata at the coast. DRILLING ENGINEERING, 51(1): 154-160. doi: 10.12143/j.ztgc.2024.01.021

Citation:

LUO Liping, ZHAO Jian, SUN Heng and HUANG Xinmiao, . 2024. Experimental study on polyurethane ring in the replacement of shield tail brush in water-rich sand strata at the coast. DRILLING ENGINEERING, 51(1): 154-160. doi: 10.12143/j.ztgc.2024.01.021

Experimental study on polyurethane ring in the replacement of shield tail brush in water-rich sand strata at the coast

1.CCCCSHEC Chengdu Urban Construction Engineering Co., Ltd., Chengdu Sichuan 610218, China;2.CCCC Nanjing Construction Co., Ltd., Nanjing Jiangsu 211899, China;3.CCCC Second Harbor Engineering Company Ltd., Wuhan Hubei 430040, China

Received Date: 03 June 2023

Revised Date: 18 June 2023

Abstract

Abstract

In shield tunneling， the method of replacing the shield tail brushes with grouting needs to forma closed and stable water stop ring， including a polyurethane ring and a slurry ring. This paper combines the example of shield tunneling construction in a water-rich sand strata at the coast， collects the in-situ groundwater to conduct indoor test about the polyurethane including the initial setting time， foaming rate， solid strength， etc. The results show that hydrophilic polyurethane reacts rapidly with groundwater， forming a compact and uniform consolidated body with low foaming rate and low strength， while the hydrophobic polyurethane is in the opposite state. Both can be considered to use on site actual injection at the same time， first injecting hydrophilic polyurethane， then injecting hydrophobic polyurethane with the dosage of 5∶1.The on-site application proves that the formed inclusions are stable and of good quality.
- replacement of shield tail brush /
- water-rich sand strata /
- polyurethane ring /
- hydrophilic polyurethane /
- hydrophobic polyurethane

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References

[1]	施瑾伟，杨钊，杨擎，等.注浆止水技术在高水压强渗透地层盾尾刷更换施工中的应用［J］.现代隧道技术，2015，52（4）：190-194. Google Scholar SHI Jinwei， YANG Zhao， YANG Qing， et al. Application of grouting and water-blocking techniques to the replacement of shield tail seal brushes in a permeable strata with high water pressure［J］. Modern Tunnelling Technology， 2015，52（4）：190-194. Google Scholar
[2]	[2] 李家洋，鞠义成.浅覆土高水压强透水地层注浆法更换盾尾刷技术［J］.隧道建设，2015（S2）：108-114. Google Scholar LI Jiayang， JU Yicheng. Method of replacing shield tail brushes under high water pressure and shallow highly-permeable cover： Case study on Weisanlu Yangtze River crossing tunnel in Nanjing［J］. Tunnel Construction， 2015，（S2）：108-114. Google Scholar
[3]	[3] 赵峰峰.富水粉砂地层盾构机尾刷更换技术［J］.公路交通技术，2018，34（S1）：171-176. Google Scholar ZHAO Fengfeng. The replacement technology of tail brush in water-rich silty sand strata［J］. Technology of Highway and Transport， 2018，34（S1）：171-176. Google Scholar
[4]	[4] 袁立斌，蔡超君，张飞雷.冷冻钢管片法更换盾尾刷技术的应用与研究［J］.公路交通科技（应用技术版），2020，16（11）：264-267. Google Scholar YUAN Libin， CAI Chaojun， ZHANG Feilei. Application and research of replacing shield tail brush by freezing steel pipe slice method［J］. Journal of Highway and Transportation Research and Development （Application Technology Edition）， 2020，16（11）：264-267. Google Scholar
[5]	[5] 姚梦威，杨平，张英明，等.南京纬三路过江通道液氮冻结盾尾刷更换技术及温度实测研究［J］.现代隧道技术，2018，55（3）：186-192. Google Scholar YAO Mengwei， YANG Ping， ZHANG Yingming， et al. Temperature measurements and tail brush replacement using frozen liquid nitrogen for the Nanjing Weisanlu Tunnel［J］. Modern Tunnelling Technology， 2018，55（3）：186-192. Google Scholar
[6]	[6] 陈驰，杨平.高水压大直径过江隧道盾尾渗漏防治研究［J］.林业工程学报，2021，6（1）：155-162. Google Scholar CHEN Chi， YANG Ping. Study on the prevention and control for shield tail leakage of large-diameter river-crossing tunnel at high hydraulic pressure［J］. Journal of Forestry Engineering， 2021，6（1）：155-162. Google Scholar
[7]	[7] 张迪.水底大型泥水盾构盾尾密封失效的应对技术［J］.铁道建筑技术，2011（5）：1-6. Google Scholar ZHANG Di. Countermeasures for failure of tail sealing of large underwater slurry shield［J］. Railway Construction Technology， 2011（5）：1-6. Google Scholar
[8]	[8] 郑杰.盾构掘进过程中盾尾刷更换技术及保护措施［J］.建筑施工，2018，40（1）：106-108. Google Scholar ZHENG Jie. Shield tail brush replacement technology and protective measures during shield tunneling［J］. Building Construction， 2018，40（1）：106-108. Google Scholar
[9]	[9] 杜建华，彭彦彬，杜立峰，等.盾构掘进施工中盾构机盾尾密封更换关键技术研究［J］.铁道建筑，2007（3）：47-48. Google Scholar DU Jianhua， PENG Yanbin， DU Lifeng， et al. Research on key technology of shield tail seal replacement in shield tunneling［J］. Railway Engineering， 2007（3）：47-48. Google Scholar
[10]	[10] 魏林春.盾尾钢丝刷受力性能模拟试验研究［J］.隧道建设（中英文），2021，41（2）：206-211. Google Scholar WEI Linchun. Experimental study on mechanical bahavior of wire brushes on shield tail［J］. Tunnel Construction， 2021，41（2）：206-211. Google Scholar
[11]	[11] 邵高波.富水砂卵石地层盾尾刷更换技术［J］.铁道建筑技术，2015（7）：6-10. Google Scholar SHAO Gaobo. Replacement technology of shield tail brush in water rich sandy pebble stratum［J］. Railway Construction Technology， 2015（7）：6-10. Google Scholar
[12]	[12] 陶云超.海瑞克盾构机盾尾刷更换技术研究［J］.铁道建筑技术，2018（3）：77-80. Google Scholar TAO Yunchao. Research on replacement technology of shield tail brush of herrick shield machine［J］. Railway Construction Technology， 2018（3）：77-80. Google Scholar
[13]	[13] 王永贵.冷冻法更换盾尾刷技术［J］.建筑机械化，2019，40（6）：64-66. Google Scholar WANG Yonggui. Technology of replacing shield tail brush by freezing method［J］. Construction Mechanization， 2019，40（6）：64-66. Google Scholar
[14]	[14] 赵新合，陈馈.钱塘江底承压水层盾尾刷改造及更换技术［J］.建筑机械化，2010，31（8）：66-68，77. Google Scholar ZHAO Xinhe， CHEN Kui. Modification and replacement technology of shield tail brush in Qiantang River bottom confined water layer［J］. Construction Mechanization， 2010，31（8）：66-68，77. Google Scholar
[15]	[15] 李勇成，张志鹏.强透水地层下更换盾尾密封刷技术［J］.探矿工程（岩土钻掘工程），2008，35（4）：80-81. Google Scholar LI Yongcheng， ZHANG Zhipeng. Technology of replacing shield tail sealing brush under strong water permeable ground［J］. Exploration Engineering （Rock & Soil Drilling and Tunneling）， 2008，35（4）：80-81. Google Scholar
[16]	[16] 孙恒，黄新淼，马超，等.泥水盾构泥浆泵选型关键参数规律性研究［J］.钻探工程，2022，49（4）：144-151. Google Scholar SUN Heng， HUANG Xinmiao， MA Chao， et al. Regularity of the key parameters for slurry shield mud pump selection［J］. Drilling Engineering， 2022，49（4）：144-151. Google Scholar
[17]	[17] 温良涛.软弱富水砂层地质条件下土压平衡盾构接收施工技术［J］.探矿工程（岩土钻掘工程），2019，46（6）：88-93. Google Scholar WEN Liangtao. Receiving process for earth pressure balanced shield in soft water rich sand formation［J］. Exploration Engineering （Rock & Soil Drilling and Tunneling）， 2019，46（6）：88-93. Google Scholar