多层钢花管注浆加固技术在大直径盾构下穿运营地铁隧道中的应用  

Application of Multi-layer Perforated Steel Pipe Grouting Reinforcement Technology in Large Diameter Shield Under-passing Operating Metro Tunnel

作　　者：王久军 刘方 张文龙 刘建友 WANG Jiujun;LIU Fang;ZHANG Wenlong;LIU Jianyou(Transportation Safety Department,Beijing-Zhangjiakou Intercity Railway Co Ltd,Beijing 100055,China;Urban Rail Transit Design and Research Institute,China Railway Engineering D Design and Consulting Group Co Ltd,Beijing 100055,China;Tunnel and Underground Engineering Research Center of Ministry of Education,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]京张城际铁路有限公司运输安全部,北京100055 [2]中铁工程设计咨询集团有限公司城市轨道交通设计研究院,北京100055 [3]北京交通大学隧道与地下工程教育部工程研究中心,北京100044

出　　处：《中国铁路》2021年第12期120-127,共8页China Railway

基　　金：中国铁路总公司科技研究开发计划项目(2017G007-B)。

摘　　要：为确保京张高铁清华园隧道工程的施工安全,提出包含穿越前准备工作、穿越中动态控制以及穿越后评价恢复3个阶段的下穿施工动态控制技术。在综合分析已有加固技术的基础上,提出多层钢花管注浆加固方案,并通过现场监测数据对下穿施工过程进行研究分析。结果表明:多层钢花管注浆加固技术方案可有效减低既有轨道结构沉降,保证下穿施工安全,研究结果可为类似工程提供参考和借鉴。To ensure the engineering safety of Tsinghua Park tunnel,Beijing-Zhangjiakou High Speed Railway,a dynamic control technology for under-passing construction in three stages is proposed,including preparation before crossing,dynamic control during crossing,and evaluation and recovery after crossing.Based on the comprehensive analysis of the existing reinforcement technology,a multi-layer perforated steel pipe grouting reinforcement scheme is put forward,and the under-passing construction process is studied and analyzed based on the field monitoring data.As indicated by the results,the technical scheme for multi-layer perforated steel pipe grouting reinforcement can effectively reduce the settlement of existing track structures and ensure the safety of under-passing construction,and the results are of referential significance for similar projects.

关 键 词：大直径盾构隧道 运营地铁隧道 多层钢花管注浆加固技术 下穿施工 

分 类 号：U43[交通运输工程—道路与铁道工程]