成都地铁密实砂卵石地层工程地质特性及施工方法浅析

A tentative analysis on the engineering geological features of compact sandy-pebble ground and construction methods in Chengdu metro

地层的工程地质特性直接影响到支护参数及施工方法的选择。文章结合成都地铁工程实践,介绍了成都砂卵石地层的降水效应;通过对监测数据的分析,反映在CD法和台阶法两种不同施工方法条件下,地层变形及内力变化情况,为制定合理的施工方案提供借鉴和参考。

Engineering geological features directly affect the selection of construction methods and support parameters in a project. In this paper, the water - lowering effect of sandy - pebble ground in Chengdu metro project is introduced. In addition, with analysis of the monitored data, conditions of the ground deformation and variation of the internal forces for the CD construction method and for the bench excavation method are revealed respectively. It is expected that the paper may be taken for reference to select reasonable construction scheme for other projects.