论文部分内容阅读
以北京地铁8号线安-鼓区间近距离盾构下穿既有地铁车站工程为例,讲述该盾构下穿工程概况及其地质情况,分析该工程的技术特点、难点及该工程存在的风险,最后指出本工程施工过程中所采取的相关措施,并进行三维数值模拟分析评估。在这些措施指导下成功实施下穿,达到了既有隧道结构的保护要求。
Taking the existing metro station project near the shield of An-tao of Beijing Metro Line 8 as an example, this paper describes the general situation of the under-wear of the shield and its geological conditions, analyzes the technical features, difficulties and the existing problems of the project Risk, and finally pointed out the relevant measures taken in the construction process of the project and carried out three-dimensional numerical simulation analysis and evaluation. Under the guidance of these measures, the under wear has been successfully implemented and the protection requirements of the existing tunnel structure have been reached.