改性脲醛树脂在高黎贡山隧道1号竖井注浆堵水中的应用  

Application of Modi fied Urea Formaldehyde Resin in Water Sealing Grouting of Shaft #1 of Gaoligongshan Tunnel

作　　者：贾建波 姚晖 周志辉 JIA Jianbo;YAO Hui;ZHOU Zhihui(China Railway Tunnel Group Co.,Ltd.,Guangzhou 511457,Guangdong,China;China Railway Kunming Group Co.,Ltd.,Kunming 650011,Yunnan,China;The 3rd Engineering Co.,Ltd.,China Railway Tunnel Group,Shenzhen 518000,Guangdong,China)

机构地区：[1]中铁隧道局集团有限公司,广东广州511457 [2]中国铁路昆明局集团有限公司,云南昆明650011 [3]中铁隧道集团三处有限公司,广东深圳518000

出　　处：《隧道建设（中英文）》2022年第3期487-491,共5页Tunnel Construction

基　　金：中国国家铁路集团有限公司重点项目(P2019G055);中铁隧道局集团科技创新计划(隧研合2018-32变)。

摘　　要：为解决富水花岗岩、高角度裂隙发育、高承压水等复杂地质条件下铁路隧道竖井施工安全及工期问题,在采用普通水泥和超细水泥等水泥基材料注浆效果不能满足施工需求的情况下,通过试验和方案对比后采用改性脲醛树脂材料进行注浆堵水,其浆液注入量、注浆孔剩余水量、井壁漏水量较普通水泥和超细水泥均有较大优势,能够更好地保证注浆效果,大大降低竖井施工淹井的风险;同时,使用改性脲醛树脂注浆可以减少单孔复钻复注次数,节约钻孔、注浆时间。该材料成功用于高黎贡山隧道1号竖井建井施工中,有效解决了600 m以下深度竖井施工注浆堵水难题,杜绝了淹井风险,确保了竖井施工安全到底,使控制性工程工期得到了有效保障。To guarantee the safety of railway tunnel shafts under complex geological conditions, such as water-rich granite, high-angle crack development, and high-pressure water, modified urea-formaldehyde resin is used for watersealing grouting after test and scheme comparison when the grouting effect of cement-based materials, such as ordinary and ultra-fine cement, cannot meet the construction requirements. The modified urea-formaldehyde resin is superior to ordinary and ultra-fine cement regarding grouting volume, residual water in the grouting hole, and water leakage on the shaft wall. It can better guarantee the grouting effect and reduce the flooding risk of the shaft. The modified ureaformaldehyde resin can reduce the single-hole redrilling and regrouting time to improve the drilling and grouting effect. The modified urea-formaldehyde resin was applied in shaft #1 of the Gaoligongshan tunnel, and a favorable effect was achieved in water-sealing grouting.

关 键 词：铁路隧道 竖井 富水花岗岩 注浆堵水 改性脲醛树脂 

分 类 号：U45[建筑科学—桥梁与隧道工程]