TGRM前进式注浆工艺在城市富水砂层隧道施工中的应用  

APPLICATION OF CONSTRUCTION TECHNOLOGY OF TGRM ADVANCED GROUTING METHOD IN TUNNEL CONSTRUCTION OF URBAN WATER-RICH SAND STRATUM

作　　者：杨春利 YANG Chun-li(Beijing Zhengping Construction Investment Group Co.,Ltd.,100093,Beying,China)

机构地区：[1]北京政平建设投资集团有限公司,北京100093

出　　处：《建筑技术》2021年第7期877-881,共5页Architecture Technology

摘　　要：在富水砂层中进行隧道暗挖施工过程中往往会因隧道侧壁出现空洞,导致大面积突水涌砂,给施工人员及周边环境带来极大的安全风险。经过现场对比、分析并改进各种注浆工艺,形成了超细型TGRM前进式深孔注浆工艺,该工艺在城市富水砂层隧道施工中具有可加固地层,降低地面沉降,阻隔地下水,防止突水涌砂的作用,提高了隧道施工的安全性。In the process of tunnel underground excavation in water-rich sand stratum,there are often cavities in the side wall of the tunnel,resulting in large-area water inrush and sand gushing,which brings great security risks to the construction personnel and the surrounding enviromnent.Through on-site comparison,analysis and improvement of various grouting technologies,the advanced deep hole grouting technology of ultra-fine TGRM is got.The technology can strengthen stratum,reduce ground settlement,block groundwater,prevent water inrush and sand gashing,and improve the safety of tunnel construction.

关 键 词：城市隧道 富水砂层 超细型TGRM灌浆料 分段前进式注浆 隧道监测 

分 类 号：TU74[建筑科学—建筑技术科学]