摘要
石头岗隧道下穿衡昆高速公路,洞身上部为膨胀土,下部为灰岩,呈上软下硬特点,不仅施工风险大,且施工困难。为此采用数值分析手段对上软下硬地层隧道下穿高速公路施工方法进行研究。研究结果表明:上软下硬地层隧道采用上部中隔墙法施工,在降低施工风险、保证施工安全的同时,能加快施工进度,可供类似工程借鉴。
The Shitougang Tunnel crosses under the highway from Hengyang to Kunming.The tunnel was excavated mainly in upper expansive soil and lower limestone.The construction was very hard and adventurous because of the upper soft and lower hard stratum and the highway lyingabove.In this paper,Construction method for railway tunnel crossing under expressway in upper soft and lower hard stratum was studied by numerical analysis method.It is indicated that partition method in the upper soil can not only reduce construction risk,but also accelerate the construction progress
出处
《铁道科学与工程学报》
CAS
CSCD
2011年第5期35-39,共5页
Journal of Railway Science and Engineering
基金
国家自然科学基金资助项目(51108462)
湖南省工业支撑科技计划项目(2011GK3217)
南宁铁路局湘桂铁路科技创新计划项目
关键词
上软下硬
下穿高速公路
数值分析
施工方法
upper soft and lower hard stratum
cross under expressway
numerical analysis
construction method
