Metro Line 9 Phase 1The project starts from Hongshan New City Station and ends at Jiangsu Grand Theater - Constitution Square Station, with a total length of about 20 kilometers, all underground lines, with a total of 16 stations, including 9 interchange stations.
The line passes through Xuanwu District,Drumtower city district (various)The line will be an important local line linking the central part of Hexi, Xiaguan and Xinzhuang areas within the main city of Nanjing, which is of great significance to the development of the Hexi New City and the upgrading of the Xiaguan area after its completion and operation.
at the present time
Metro Line 9 Phase 1 Stations
Entering the construction phase of the main structure and the installation and decoration
Little Micro has recently followed
"Metro guards" at the city railroad station
Come to Long Jiang Station and Baiyunting Station
Field visits to construction sites
Longjiang Station
Square inches to do to move, from top to bottom "reverse" construction
Longjiang Station interchanges with the existing Line 4 and is located at a busy downtown intersection. Restricted by the surrounding traffic organization difficulties, complex underground pipelines and other construction difficulties, the main structure of the station to take the"Cover-and-dig inversion."Construction.
Cover excavation inverse method, different from the main structure construction of most stations, the so-called reverse work, that is, the station structure from top to bottom to complete the earth excavation and side walls, center plate and floor, digging a layer to make a layer of structure. This unconventional operation is like building a house in the opposite direction, building the roof first and then the body.
At present, the Longjiang station construction to about 6 meters underground, the workers are tying steel bars, the second plate construction. In the city to build the subway, cover digging inverse method of construction not only to protect the ground road traffic travel, but also can effectively control the deformation of the surrounding soil and surface settlement, to ensure the safety of structural construction.
"Metro guards" grasp the progress of the project in a timely manner, refine the supervision and sampling arrangements, pay close attention to the quality of the station concrete pouring and construction joints dense situation, and urge the construction unit to take effective protection measures to prevent and control, strict quality control.
Interval from Shimonoseki Station to Baiyunting Station
Driving the slowest car to promote the "fast" development of urban transportation
Metro Line 9 Shimonoseki Station to Baiyunting Station interval recently realized the double line through, shield machine will soon be dismantled in Baiyunting Station exit. Recalling the process of digging, shield driver Ge Wentao laughed that he drove the world's slowest car, only about 4 centimeters per minute to advance, built to facilitate the public travel fast-passing track.
Interval tunnel from Xiaguan station to Baiyunting station to receive, along the south of the hot river road to the south of the laying, the construction of the Yangtze River need to overcome the Yangtze River flooding silty strata digging problems. "Shield advancement in such a stratum is equivalent to 'cutting tofu with a knife'." Ge Wentao said, pre-construction to take soil every 30 meters to do experiments, first to find out the geological conditions, and then choose the right shield machine and cutter.
In the operation room, there are several large screens, which can see the monitoring video and parameters during shield tunneling. "Digging parameters are to be closely watched," Ge Wentao said, "such as digging thrust, blade torque, soil pressure, even the slightest abnormality must be dealt with in time."
The guidance system is equivalent to the shield machine's "eyes", in the shield before the start, engineers will shield interval design line coordinates into the guidance system, digging process, the guidance system real-time measurements and feedback data, timely corrections, to ensure that the shield route to go the right way, not yawing.
The guidance system is equivalent to the shield machine's "eyes", in the shield before the start, engineers will shield interval design line coordinates into the guidance system, digging process, the guidance system real-time measurements and feedback data, timely corrections, to ensure that the shield route to go the right way, not yawing.
