In order to solve the structural damage of Metro Shield-bored Tunnels caused by mechanical and electrical equipment installation drilling construction, in recent years, Shield -bored tunnel segment embedded channel technology has been greatly developed. At present, the research on the 13th five year plan line of Nanjing Metro is taken as the background, In order to solve the high cost、durability and later replacement of embedded channel, Two kinds of installation schemes are put forward, which are special fixed parts + Non-embedded channel system and embedded sleeve + external channel system, it is also a further exploration and extension of tunnel tunnel technology. In this paper, through model selection, calculation and simulation analysis, the key technical problems such as special fixed parts + Non-embedded channel system and embedded sleeve + external channel system are studied, It is considered that the two schemes are feasible and safe, It can be selected according to the actual situation of the line, In order to achieve the purpose of convenient construction and easy replacement.
U239. 5；U213. 2