浅谈盾构下穿建筑物掘进参数控制

摘要

文章结合深圳地铁2号线2222标盾构机下穿景煜小学、翠海幼儿园等建筑物的工程实例,研究分析了盾构隧道下穿施工对城市建筑物的影响机理及变形控制基准值,提出了相应的盾构机下穿建筑物施工的掘进参数和控制地层沉降的技术措施.%This paper analyzes the impact mechanism and deformation benchmark of shield tunnel constructionrnunder existing buildings using Lot 2222 of the Shenzhen Metro line 2, which travels under Jingyu Primary Schoolrnand Cuihai Kindergarten, as an example. It presents the parameters concerning shield driving and relativerntechniques lo control ground settlement.