超大断面暗挖车站拱柱法施工技术在地铁施工中的应用

Application of arch method construction technology of super large section mined metro station in subway construction

文章以贵阳地铁3号线某车站为例,针对该工程典型喀斯特地质条件,对超大断面暗挖车站施工方案进行比选。通过对采用的拱柱法施工技术进行详细介绍,明确各个工序下所对应的技术要点。该工法在确保工程安全、质量的同时可以缩减工期与成本,经济效益和社会效益明显,相关经验可为类似条件下的工程施工提供参考。

This study examines a station on Guiyang metro line 3 as an example.According to the typical karst geological conditions,through the comparison and selection of the construction schemes of the super large section mined metro station,this paper discusses the arch method and puts forward feasible technical schemes,describes technical points of each working procedure.The result shows that this method can reduce time and cost while ensuring the safety and quality of the project,in general,the feasibility is high,and good economic and social benefits have been achieved.Related experience can serve as a reference to constructions carried out under similar conditions.