摘要
以深圳地铁3号线老街站东端站台扩建工程为例,通过对复杂环境下进行浅埋暗挖临时洞室开挖及长期使用过程中的现场监测,得到洞室围岩的位移以及地面沉降量的大小。基于FLAC3D有限差分软件中的Morh-Coulomb准则,对浅埋暗挖洞室引起的围岩变形进行数值计算。将数值计算结果与监测结果进行对比,证明了FLAC3D在此方面的可行性;为现场施工提供了合理的依据。
Take the extension project of the old street station eastern platform of Shenzhen Metro Line 3 as an example, the displacement of cave surrounding rock and the amount of land subsidence in temporary excavation and long-term use field monitoring are gotten through the shallow underground excavation under complicated circumstance. Based on the Morh-Coulomb criterion of FLAC3D finite difference software, surrounding lock deformation caused by shallow underground excavation cavern is calculated. With contrast of numerical and monitoring resuits,the feasibility of FLAC3D in these cases is proved. A reasonable basis for site construction is provided.
出处
《世界科技研究与发展》
CSCD
2010年第6期779-781,共3页
World Sci-Tech R&D
关键词
暗挖
洞室
沉降
监测
数值计算
excavation
cavern
settlement
monitoring
numerical calculation
