摘要
在杭州某项目隧道开挖支护过程中,洞内出现不明涌水导致隧道初支局部坍塌。采用在塌方导洞两侧施设咬合桩进行隔离,同时对塌方回填地面进行旋喷加固,开挖支护过程中洞内增加复拱等措施进行修复。对开挖过程中沉降进行数值模拟分析,有限元分析结果和工程中实时监测表明,该修复方案能有效控制地面沉降,具有安全性和可靠性。
In a tunnel construction in Hangzhou,unknown water swarms into tunnel leading local collapse.Set secant pile isolation on both sides of pilot and jet grouting at collapse.In the process of excavation and supporting,compound arch is used for repair.Numerical analysis of settlement is conducted.According to the finite element analysis and practice,the repair solution is safety and reliable and control the settlement.
出处
《施工技术》
CAS
北大核心
2017年第7期102-106,共5页
Construction Technology
关键词
地下工程
隧道
淤泥质粉质黏土
浅埋暗挖
塌陷
修复
underground structures
tunnels
silt silty clay
shallow buried excavation
collapse
repair
