摘要
南京地铁南北线地基存在特殊性 ,即其施工过程中地铁隧道底板要穿过很多不良地质体且岩性变化极其频繁。本文对这种影响地基不稳定性的因素进行了分析 ,主要有施工沿线上岩土类型的频繁变化、软土的存在、溶洞的存在、断层的存在、倾角大的土岩界面的存在等。
There is a particular character in the ground of south-north line of Nanjing metro,that is the bottom of the metro tunnel has to pass through weak rock-soil masses.This paper analyzes factors influencing the stability of metro foundation.These factors include frequent change of rock-soil types,pressure of weak soil,water-eroded cave,faults and rock-soil interface with large incline.Finally,the countermeasure is studied.
出处
《地下空间》
CSCD
2002年第1期42-44,共3页
Underground Space
基金
江苏省交通科技项目资助
关键词
地铁隧道
foundation instability
weak soil
faults
water-eroded cave
countermeasure
