摘要
在上软下硬复合地层条件下开展盾构施工的难度比较大,刀盘对于岩土体的切削程度不一,容易扰动地层,还会出现地表沉降问题。在空间组合形态上,软层与硬层组合多变,且地表沉降较为复杂,无法确保盾构施工安全。此次研究通过分析上软下硬地质结构,综合分析盾构施工技术特点和地表沉降机理,找寻影响盾构所致地表沉降的影响因素,以此维护施工安全性和稳定性,并且希望能够对相关人员起到参考作用。
It is very difficult to carry out shield tunneling under the condition of upper soft and lower hard composite strata. The cutting degree of cutter head for rock and soil body is different. It is easy to disturb strata and surface subsidence will occur. In the form of space combination, the combination of soft layer and hard layer is changeable, which can not effectively control surface subsidence and ensure the safety of shield construction. Through the analysis of upper soft and lower hard geological structure, find out the influencing factors, put forward control measures, maintain construction safety, hope to be able to play a reference role to the relevant personnel.
作者
尹业兵
刘锐
张立
YIN Ye-bing;LIU Rui;ZHANG Li(China Construction Tunnel Corp.Ltd.,Changsha 410000,China)
出处
《工程建设与设计》
2019年第22期206-207,共2页
Construction & Design for Engineering
关键词
上软下硬复合地层
盾构施工
地表沉降
upper soft and lower hard composite stratum
shield construction
surface subsidence
