摘要
通过对武汉市轨道交通3号线盾构隧道下穿2号线既有隧道工程实例的分析,结合类似地层工程经验提出了盾构隧道近距离下穿既有隧道的工程措施,并运用数值分析的方法,得到了盾构下穿过程中既有隧道的竖向位移与盾构机顶推力、土层加固、盾构机掘进位置的关系,验证了工程措施的可行性,提出了相关建议。
Engineering measures for existing tunnel under crossed by shield tunnel in short distance were put forward through the analysis of project example in the Wuhan Metro line 2 under crossed by Metro line 3, combined with the engineering experience of similar geological strata. Numerical analysis methods were used to obtain the relations between the vertical displacement of existing tunnel and the jacking force of shield machine, ground strengthening and position of the shield machine. Feasibility of the engineering measures was verified and related suggestions were put forward.
出处
《土工基础》
2012年第2期13-15,共3页
Soil Engineering and Foundation
关键词
盾构
近距离下穿
既有隧道
数值分析
Shielding, Under Crossing in Short Distance, Existing Tunnel, Numerical Analysis
