In the Kunming city subway construction to obtain major node progress at the same time, the first period project of Kunming subway1,2lines of22.7km long track smoothly through the left yesterday, Xiao village station to radio communication university station. The line in construction of Kunming subway first adopted the steel spring floating slab track bed, can minimize the interaction of metro vehicle vibration and noise.
According to the introduction, in addition to the steel spring" suspended" technology, Kunming at present construction of metro rail adopts special track, adding metal vanadium, improved rail abrasion resistance.
As of now, the first phase of the project ( East Village of Xiao station to radio and TV University Station )22.7 kilometers line left, right in the line of century city to Chenggong station interval has passed through a long rail. The elevated section of line, turnout has fine adjustment of finish. In 12the station the main structure has been completed, wherein, underground station7( Xiao village station, North Station in Chenggong, the administrative center station, Chenggong station, Chenggong station, the next village station, radio and TV University Station ), an elevated station 5( Century City station, sports city station, South Station, five sports city, village station, small Royal Camp station ), comprehensive repair base and depot two ( five EP village integrated base, big pear orchard depot ). Yesterday the left track through, right line with Chenggong south to the village of 1400 meters is not perforated interval.
Street stands today completed cap
Street station, Kunming city the first cap metro station,8 this morning, the station will be completed all capped concrete pouring. Concrete completely solidified, the paving waterproof layer, soil, accelerated pipeline. It is expected that by June 30th, there will be restored and the surrounding road flat, because construction occupied road will also return to the public.
The camp
16 meter from the ground for tunnel under what
After the whistle blew, the reporters took construction rail car came away from the ground 16 meters deep underground tunnel. Tunnel like freeway tunnel, but did not see the giant fan. Track every 6meters with a drainage ditch cover,40 cm wide,15 cm deep. These gutters can ensure metro vehicle operation to bring water, tunnel exhaust water is discharged smoothly. Orbital pass will be followed by signal, electrical and other subsequent construction. On the tunnel wall will also lay the pedestrian passageway for subway, fault, passenger evacuation.
" Suspended" rail vibration and noise reduction
Radio and TV University in distance terminus station about two kilometers place, is mounted at the end of 10 meters track steel spring floating slab track bed. It was first used in Kunming subway construction of steel spring floating slab track bed. The structure is a new, special vibration damping track, by a steel spring, seal, vibration isolator. Through isolation, strong vibration generated by train moving only a very small amount will be transferred to the lower part structure, has good vibration isolation, noise reduction effect. Laid this kind of structure 100meters rail cost can be paved the common rail700 meters.
