广州地铁南方医院站花岗岩风化层特性分析与地基处理措施

随着广州地铁建设工程不断发展,出现了大量的深基坑工程,结合南方医院站的工程地质、水文地质条件对其稳定性做出了评价,分析研究花岗岩风化层特性以及原设计方案的不足造成基坑出现问题,制定了合理的降水、注浆等技术处理措施,有效控制基坑涌水、失稳、上拱开裂等工程问题。防止基底及坑外土体移动,给出了多层车站基坑开挖、涌水处理及基底加固措施有益建议。

Granite Weathering Layer Characteristics Analysis and Foundation Treatment Measures on South Hospital Station of Guangzhou Metro

With the continuous development of the Guangzhou subway construction project,there has been a lot of deep excavation,combined with the Southern Hospital station engineering geology,hydro-geological conditions made its stability evaluation,analysis of characteristics of granite weathering layer and the original design problems caused by the lack of excavation.The precipitation,grouting and other technical processing measures are adopted to effectively control the gushing water pit,buckling,cracking and other construction issues on the arch.For preventing soil movement outside the basement and the pit,the paper gives the useful suggestions on the multi-station excavation,gushing water situation and basement reinforcement.