Using Grouting of Shield Tunneling to Reduce Settlements of Overlying Tunnels: Case Study in Shenzhen Metro Construction
Using Grouting of Shield Tunneling to Reduce Settlements of Overlying Tunnels: Case Study in Shenzhen Metro Construction
复制标题
利用盾构隧道注浆减少上覆隧道沉降——深圳地铁建设案例
DOI：
10.1061/(asce)co.1943-7862.0000455
复制
发表时间：
2012-04-01
影响因子：
5.1
通讯作者：
Chen, Xiangsheng
中科院分区：
文献类型：
--
作者：
Li, Xinggao;Chen, Xiangsheng
盾构法隧道施工中的注浆控制对于减小盾构法隧道下穿既有隧道的沉降至关重要，特别是在城市人口密集的地区，沿沿着曲线盾构法隧道施工。以深圳地铁1号线科学馆站至大剧院站区间盾构下穿既有隧道为例，阐述了盾构施工注浆控制的方法和方案。提出了“观测法”与“预定设计法”相结合的盾构法注浆控制参数处理方法。灌浆控制的一些参数在下穿前预先设定或建议，其他参数可在施工过程中根据“观测法”进行调整。该方案主要包括下穿前的准备工作、运营洞自动监控系统、同步注浆和注浆加固等。
AbstractGrouting control of shield tunneling is of paramount importance to reduce settlements of existing tunnels below-passed by shield tunneling along a curved alignment and in crowded urban areas. The methodology and scheme of the grouting control of shield tunneling is illustrated taking the first Earth Pressure Balanced (EPB) shield below-crossing existing interval tunnels from Kexueguan station to Dajuyuan station of the Shenzhen metro line No. 1, for example. A combination methodology of the “observational method” and the “predefined design method” was set up to deal with parameters concerning the grouting control of shield tunneling. Some parameters of the grouting control were predefined or suggested before the below-crossing, and other parameters might be adjusted during construction on the basis of the “observational method.” The scheme primarily consists of preparation work before the below-crossing, automatic motoring system used in operation tunnels, simultaneous backfilling grouting and gro...