Recently，Jointly built by China Railway Construction Heavy Industry and China Railway 18th Bureau“Prairie auspicious”TBMTake the lead in completing the excavation task of the project of diverting water from the river to the Liao River，It has laid a solid foundation for the next stage of the project.。

“Prairie auspicious”TBMComplete the excavation task of the project of diverting water from the river to the Liao River，Take the lead out of the hole

The Water Diversion Project is the largest water conservancy project in Inner Mongolia Autonomous Region.，It is also the first one adopted by Inner Mongolia Autonomous Region.TBMWater conservancy project with tunneling method。After the project is fully completed，It can effectively alleviate the water shortage in the Xiliao River Basin in the eastern part of Inner Mongolia Autonomous Region.，It is of great significance to promote the optimal allocation of water resources in Xing'an League and Tongliao area.。

       This time, the interval to achieve penetration is 5-7 to 5-5 adit interval，It is 5 sets along the whole line of Yinchuo-Jiliao.TBMFirst set under constructionTBMThrough interval，Construction length is 18.57 kilometers。“Prairie auspicious”TBMExcavation diameter 4.75 meters，The whole machine is 317 meters long.，The technology has been conquered one after another“Small diameterTBMSystem integration”“Water inrush in tunnel、Fault、Rapid passing capacity of unfavorable geology such as fracture zone”“Personnel logistics channel layout”“The pulley structure is not easy to pass through the arch frame”“Small-section ultra-long distance ventilation”And“Small diameter cutterhead cutter arrangement”And other difficult problems。

“Prairie auspicious”TBMGet off the production line of China Railway Construction Heavy Industry

“Prairie auspicious”TBMThe excavation began on November 25, 2019.，Overcome the difference of surrounding rock、Large water inflow and other construction problems。The comprehensive performance of the equipment is excellent，Maximum monthly footage of 973 during construction.4 meters、Maximum daily footage 48.4 meters、Average monthly footage 504.The result of 16 meters successfully completed the first stage of the project of diverting water from the river to the Liao River.TBMTunneling task。