复杂条件下盾构接收组合工法的风险控制  

Risk Control of Shield Receiving Combined Construction Methods under Complex Conditions

作　　者：温法庆[1] Wen Fa-qing(The 3rd Engineering Co.,Ltd Railway 18 Bureau Group, Zhuozhou 072750, China)

机构地区：[1]中铁十八局集团第三工程有限公司

出　　处：《江科学术研究》2019年第1期18-22,共5页Academic Research Of JXUT

基　　金：江西省科技支撑计划(NO.20151BBG70059)

摘　　要：在富水的砂(卵)砾、上软(砂砾)下硬(泥岩)等不良地层进行盾构接收时,由于地面空间狭小、周围环境复杂又紧邻建筑物,无法进行常规端头加固;盾构接收井端头管线多而复杂又难以迁移,单独使用旋喷加固又不能满足端头的加固要求;采用辅助降水会影响到周边的建筑物安全等限制条件下,采用钢套筒加冻结法的组合工法进行盾构接收的风险控制,可满足特定条件的盾构接收要求。It is invalid to apply conventional shield-end reinforcement technology in small ground space, complex circumstances and adjacent to surrounding buildings when installing shields in poor stratum such as water-rich sandy gravel stratum as well as upper-soft(gravel) and lower-hard(mudstone) etc. The large amount and the complex condition of pipelines in the end of the reception shaft make the pipelines difficult to remove;it cannot come up with the reinforcement requirements when jet grouting is used alone as auxiliary dewatering method would affect the safety of surrounding buildings.In consideration of these conditions, adopting multi-auxiliary methods of steel sleeve and the freezing method as the risk-control method during the process would fulfill the requirements of shield receiving in particular cases.

关 键 词：盾构接收 冻结法 钢套筒 风险控制 

分 类 号：TU19[建筑科学—建筑理论]