The Key Technology And The Research And Practice In Line1 Of Nanchang Metro Shield

This paper expounds the development of shield and its significance.Taking the engineering practice of the first phase of line 1 of Nanchang rail transit as the object of study.Referring to the construction example of the shield section of the four section of the civil engineering bid Plaza,Pavilion of Prince Teng Plaza(formerly Zhong Shan Road west Station).By technical analysis as a means to research the key technology of shield on Ganjiang River.Through the shield on Ganjiang River flood prevention wall technology and analysis of Shield Crossing shallow overburden river section technology and analysis of shield machine,pressure opening technology and analysis,operation of shield machine under normal pressure open operation technology and analysis of broken fault zone,summarized the key technologies,and ultimately achieve the effective control of shield on Ganjiang River the purpose of risk source.The technical analysis,refers to the shield on Ganjiang River as the research object,through the analysis of different schemes of formulas,charts and data,the sum method to determine risk sources according to the trend and cyclical trends of the construction organization plan and emergency plan.The key technology is an indispensable part or technology that plays an important role in a system or a link or a technological field.It can be a technology point or a knowledge that plays a crucial role in a certain field.Examples in this paper is a few important and indispensable technical points of shield on Ganjiang River.The effective control,with less manpower,financial and material resources,energy and less time for the shield on the safety control status in Ganjiang River.The risk source refers to one or more kinds of risk sources which are harmful to the construction of a project,such as improper construction organization activities,harsh hydrogeological environment and so on.