Overview of Small Diameter Shield Tunnel Engineering
In order to promote the technological development of small diameter shield tunnel engineering,focusing on the engineering practice and research status of small diameter shield tunnels,the technical achievements was systematically reviewed from the aspects of technical characteristics,mechanical properties,tunnel design,con-struction technology,etc.Firstly,starting from the various conditions that constrained small diameter shield tun-nels,the technical characteristics were extracted and the future development directions were proposed;Secondly,relevant research results at home and abroad were investigated to preliminarily clarify the mechanical characteristics of small diameter shield tunnels,and the key issues were pointed out that need to be focused during the design and construction process;Furthermore,based on the existing design concept,the shortcomings of the current design were elaborated;Finally,the construction technology of existing small diameter shield tunnels was briefly de-scribed,and the similarities and differences between small diameter shield tunnels and general diameter shield tunnels were compared and analyzed.It was pointed that a large amount of research is still needed to further explore the deformation mechanism of small diameter shield tunnels.This study can provide reference for similar projects in future.
small diameter shield tunneltechnical characteristicsmechanical characteristicsdesign and con-struction
国家科技期刊平台
NSTL
万方数据
