浅埋、大跨、暗挖地下通道监控量测数据分析

An Analysis of the Monitoring Data from Shallow and Large-span Underground Passages by Underground Cutting

长春站南北广场地下通道,横穿多条既有轨道及地下管线,主要穿越可-软塑粉质粘土地层,该地层压缩性高、强度低、洞室开挖后围岩自稳能力差,施工范围内地下水位高。施工中采用了长大管棚辅以小导管加固技术等综合施工措施,并进行了严密的施工监控量测,确保了施工和地面建筑物安全。

The underground passage of the Changchun Station, traversing some tracks and underground pipelines, chiefly goes through the plastic and soft plastic clay stratum. It has the property of high compressibility, and low intensity. The ground stability is bad after being tunneled, and the underground water level is high in the range of the construction site. Some comprehensive measures, such as long and big shed-pipe, small conduct-pipe technique and so on, have been adopted. Rigor monitoring is adopted. Therefore the security of construction and ground buildings can be ensured.