市政技术2024，Vol.42Issue(7)：14-21,8.DOI:10.19922/j.1009-7767.2024.07.014
多舱顶管端头工作井MJS加固技术及其应用效果分析
Analysis of MJS Reinforcement Technology and Application Effect of the End Well in Multi-cabin Jacking
摘要
Abstract
In jacking engineering,the effective reinforcement of the local soil at the end well is an important guaran-tee for the successful implementation of the crossing project.The reinforcement project by MJS of the end well of the utility tunnel of Danxia road adjacent to Nanchang city are taken as an example.Through on-site condition analysis,drilling core detection,and numerical simulation calculation,the reinforcement effect of the MJS method on the end working well at the large cross-section of multi pipe jacking engineering is analyzed.The results show that the MJS construction method pile is used to distinguish the strong and weak reinforcement areas and the local wedge rein-forcement scheme for the multi-cabin large section pipe jacking end shaft fully meet the safety and quality require-ments of the project.The existing subway tunnel structure under the pipe jacking project has high requirements for the control of the surrounding soil construction disturbance.But the existing reinforcement scheme has a significant effect on the control of the surrounding stratum displacement.This reinforcement plan has guiding significance for the design and construction of similar projects.关键词
综合管廊/多舱顶管/端头井/MJS加固/数值模拟Key words
utility tunnel/multi-cabin jacking/end well/MJS reinforcement/numerical simulation分类
土木建筑引用本文复制引用
陈志勇,彭焱锋,刘维正,吕伟华..多舱顶管端头工作井MJS加固技术及其应用效果分析[J].市政技术,2024,42(7):14-21,8.基金项目
湖南省建设科技计划项目(KY202108) （KY202108）
中铁隧道局集团科技创新计划(隧二研合2020-08) （隧二研合2020-08）
