April 2023，Railway Construction Heavy Industry“Prairie Anda”Open typeTBMThe monthly tunneling footage of 1377 was completed in the tunneling construction of the 04 bid of the tunnel section of the water diversion project from Chuohu to Liaohe of China Railway Tunnel Bureau Group.2 meters，Create the same level of domestic open typeTBMA new record of the highest monthly footage。

“Prairie Anda”TBMExcavation will start in November 2020.，Tunneling progress is affected by many factors.，One of the most challenging is the rescue of water gushing.。In the process of digging，TBMIt has experienced many large-scale water inrush.，The maximum water inflow is 53450 cubic meters./God。In the face of great difficulties，The technical R & D and service team of China Railway Construction Heavy Industry Co., Ltd. actively cooperates with the construction party.，Overcome difficulties together，For“Prairie Anda”Fast、Safe tunneling escort。

China Railway Tunnel Engineering Group Co., Ltd. has perfect equipment management mode and rich construction experience in the project of diverting water from the river to the Liao River.，Give full play to it“Prairie Anda”TBMExcellent performance，The equipment created the domestic open type on November 19, 2021.TBMSingle-day tunneling 101.The highest record of 12 meters，In April 2023, it created the same level of domestic open type.TBMMaximum monthly footage 1377.A new record of 2 meters，Be crowned with“Sky Arrow”An honorary title。