南京地铁珠江路站—鼓楼站区间监控量测数据分析

Monitoring Data Analysis for Nanjing Subway Section between Zhujianglu Station and Gulou Station

南京地铁珠江路站—鼓楼站区间,穿越软—流塑状淤泥质粉质粘土地层,地面建筑物及地下管线密集。软—流塑状淤泥质地层压缩性高、强度低、易产生蠕动,围岩无自稳能力,在施工中采用大管棚加小导管超前预注浆加掌子面注浆隧道预支护方案,及多种开挖与支护的综合措施。在施工过程中进行了严密的监控量测,通过对量测数据的分析,给出数据规律曲线,保证了隧道施工与建筑物的安全,使工程得以顺利进行。

The Nanjing subway section between Zhujianglu station and Gulou station passes through many buildings and underground pipes in soft flowing mucky silty clay strata of high compressibility, low intensity, easy creepage, and no self-stability. Many synthetic construction technologies are adopted in this project, such as large pipe-shed, small tremie advance support, working face deep hole grouting and partial excavation, etc. The surface subsidence is closely monitored during construction, obtaining the data pattern curve and thereby assuring the safety of the tunnel construction as well as the buildings on the ground and the smooth going-on of the project.