摘要
地铁区间隧道在开挖过程中因地质条件复杂、隧道埋深及跨度大、覆土内管线密集等原因造成地表沉降、地层移动等工程事故屡见不鲜。以某地铁区间隧道为工程依托,通过理论分析,借助peck地表沉降理论研究分析区间隧道开挖过程中的沉降规律,得出了地表沉降的函数关系表达式;借助Midas GTS数值模拟软件选取试验段区间隧道,对其开挖过程中的地表沉降规律进行分析计算,将其变形沉降曲线与peck沉降理论进行比较,得到济南地区区间隧道开挖过程中的地表沉降规律,指导工程实践。
There are common engineering accidents of surface settlement, stratum movement and etc. in the excavation of metro tunnel because of the complex geological conditions, deep buried tunnel, long span, and crowded pipelines in earthing. Taking a metro tunnel as the engineering case, based on the theoretical analysis and with the help of the peck surface settlement theory, the article studies and analyzes the settlement law in the excavation of metro tunnel, and introduces the function relation expression. With the help of Midas GTS numerical simulation software, the areal tunnel of the test section is selected, and the surface settlement law is analyzed and calculated in the excavation of the tunnel. Its deformation settlement curve is compared with the peck settlement theory in order to achieve the surface settlement law in the excavation of areal tunnel in Jinan Area, which can guide the engineering practices.
出处
《城市道桥与防洪》
2016年第2期169-171,18-19,共3页
Urban Roads Bridges & Flood Control
