recently, in the construction site of the Ji'nan rail transit R line, with the steady advance of the shield machine, the underground "long dragon" has also begun to take shape. This year is the year of tackling key problems in rail transit construction. At present, shield construction will soon usher in the downhole climax. According to the plan, in November this year, the U shaped beam frame of the planned test section of the R1 line was completed in March 2017, the planned elevated section station was completed in July 2017, and the planned elevated section U shaped beam frame was completed in July 2017. The project of the planned elevated section of the high speed bridge was completed in August 2017, and the underground station was completed.