泥水盾构“接长补短”接收辅助工法关键技术研究

Study on critical technologies of slurry shield “cutting off the long and compensating the short”receiving auxiliary method

以广西南宁地铁1号线某区间富水地层盾构接收为背景,由于客观原因造成接收端头加固体长度不足,导致盾构接收不能按照常规接收方法处理,根据现场实际情况,提出了"接长补短"的指导思路,通过洞门外增设密闭短套筒来达到泥水平衡盾构机在富水圆砾地层中顺利接收的目的,并对今后类似工程具有参考价值。

Taking the regional moisture stratum shield receiving of Guangxi Nanning subway line N o. 1 as the background, objective causes lead to receiving end reinforcement length shortage and abnormal shied receiving treatment method. According to the field conditions, the paper puts forward the guiding idea of u cutting off the long and compensating the shortIt achieves the goal of slurry balancing moisture acceptance by in-creasing closed short sleeve, has reference value for similar project.