北京地铁五号线崇文门站施工中允许地表沉降分析

Analysis of the allowable ground subsidence during the construction of the Chongwenmen station on No.5 line of Beijing metro

建设中的北京地铁五号线崇文门站下穿既有地铁一号线区间隧道及众多地下管道,为保证既有地下铁道正常运营和地下结构的安全,需严格控制新建车站施工引起的地层位移。文章结合新建车站的暗挖施工及地下管线和既有线铁道的实际情况,计算和分析了穿越既有线地铁段施工的地表允许沉降值,可为制定合理的施工方案提供参考。

Chongwenmen station on No.5 line of Beijing metro passes underneath the existing running tunnel of metro No.1 line and many underground pipelines. In order to guarantee the normal operation of the existing metro and the safety of underground facilities, the ground displacements during the construction of the new station should be controlled strictly. In accordance with the application of mining method for the construction of the station,considering the underground pipelines and the exiting metro, the paper analyzed and calculated the allowable ground subsidence during the construction of the new station, these can be served as a reference for establishing a reasonable construction scheme.