地铁车站暗挖工法实例比选分析

Comparison Analysis of Mining Method of the Living Metro Station

在繁华市区主干道下修建地铁,尤其在不允许交通中断的前提下,暗挖法成为一种较优的方案。以徐州某地铁车站为例,对"洞柱法"和"中洞法"方案进行详细对比分析,从工程地质、适用条件等方面进行了综合比选,并对两方案进行了数值模拟。研究结果表明:"洞柱法"对周边环境影响较小,受力体系优于"中洞法",研究成果可供繁华中心城区暗挖施工地铁车站参考。

Undermining method is becoming a better solution when metro station is built under the urban arterial road, especially the transportation is not allowed to interrupt. As an example of Xuzhou metro station, pillar-beam-arch method and center drift excavation method were compared and analyzed from the aspects of engineering geology, applicable condition and so on. Two schemes were simulated, the results showed that ＂pillar-beam-awh method＂ scheme had less impact on the surrounding environment, and was superior to the ＂pillar-beam-arch method＂ in construction. But above all. the research results can be used for reference of subway station scheme which was constructed by undermining method in the bustling downtown area.