摘要
类矩形盾构法隧道施工中,同步注浆的压力分布是控制隧道周边地层稳定及地表沉降的关键。类矩形盾构隧道由于其几何形状具有特殊性,会导致浆液产生一定淤积,影响浆液的流动和充填,可能出现浆液充填不均匀的现象。文章通过采用宁波轨交3号线类矩形盾构隧道缩尺模型进行的同步注浆模拟试验,借助于注浆压力、地表位移、分层沉降及测斜数据,分析了类矩形盾构隧道同步注浆模拟试验过程中注浆压力的变化及空间分布规律,并对周围土体的稳定性进行了测试和研究。
Pressure distribution of synchronous grouting is critical for the control of strata stability and ground settlement around the tunnel during the quasi-rectangular shield tunnel construction.In this paper,considering that quasi-rectangular shield tunnelling may cause grout deposition and uneven filling due to the special section shape,a simulation test was carried out for the synchronous grouting by using a model for a quasi-rectangular shield tunnel of Ningbo Metro line3,and relevant variation and distribution of grouting pressure were analyzed based on the collected grouting pressure,ground surface displacement,layered settlement and inclinometer data,and the stability of surrounding soil masses were tested and researched as well.
出处
《现代隧道技术》
EI
CSCD
北大核心
2016年第S1期209-215,共7页
Modern Tunnelling Technology
基金
国家重点基础研究发展计划(973计划)(No.2014CB046905)
上海市科学技术委员会资助项目(No.14DZ1207900)
宁波市重大科技攻关资助项目(No.2015C110017)
关键词
类矩形盾构
同步注浆
模型试验
注浆压力
Quasi-rectangular tunnel
Synchronous grouting
Model test
Grouting pressure
