Abstract:Luxiang Road - Qilianshan Road Link-up Project Section II (K2+160.0~K3+265.15) is a comprehensive project including the pipe jacking, foundation pit, bridge, road and drainage. The embankment bridge, foundation pit and partial pipe jacking works at it north side are all in 50-m safety protection areas of Metro Line 7 under operation and Metro Line 15 under construction, and are 6.1m from the nearest distance of the disease section of Metro Line 7 and are 1.7 m from the nearest distance of Metro Line 15 Station. The influencing factors of many construction conditions possibly on the adjacent rail traffics are analyzed. The protective measures taken for these influencing factors in the construction are set forth. Combined with the analysis of monitoring data, the existing problems and the control essentials in the construction are summarized. The suggestions for the safety protection area of rail traffic are given.