This month，Henan Shuitou Engineering Material Machinery Co., Ltd.、Henan No.2 Water Conservancy Bureau Group、Jointly developed by Henan Water Conservancy First Bureau Group and China Railway Equipment Group“Shuitou No.2”（China Railway 1481）、“Shuitou No.3”（China Railway No.1482）All the composite earth pressure balance shield machines passed the acceptance and went off the production line smoothly.，The equipment will be used in Chushandian Irrigation Area Project.，This is the second time that Henan Province has applied shield equipment to irrigation area projects.，The innovative application of shield technology in the construction project of Henan irrigation area has been realized.。

“Shuitou No.2”Excavation diameter of composite earth pressure shield machine 4.37 meters，The total length is about 161 meters.。The total length of the tunneling section is about 6.Seven kilometers，The main crossing geology is mudstone、Sandstone、Glutenite、Silty clay，Among them, the whole section of unstable surrounding rock and viscous strata accounted for more than 70%，It will cross the major risk source of Beijing-Guangzhou Railway.。

“Shuitou No.3”Excavation diameter of composite earth pressure shield machine 4.97 meters，The total length is about 153 meters.。The total length of the tunneling section is about 2.Seven kilometers，The main crossing geology is sandstone.、Claystone、Pebbles、Silty clay，The maximum burial depth is more than 30 meters.，Unstable surrounding rock and viscous formation account for more than 80 percent%。In view of the above geological characteristics，China Railway Equipment has effectively solved the problem of rock breaking by using a number of innovative technologies、Mud cake、Tight space、High water pressure、Many difficult problems such as surface subsidence。

Xinyang Chushandian Reservoir Irrigation Area Project，It was by《Planning of Four Rivers in Henan Province》It is listed as a water resources allocation project in major water resources conservation and utilization actions and key projects.，It is also one of the seven key water conservancy projects in Henan Province.。After the completion of the project, it can solve the water demand of agricultural irrigation in the irrigation area and urban and rural residents along the line.，It is of great significance to ensure the safety and guarantee rate of urban and rural water supply and agricultural irrigation.。At the same time，It also marks another important breakthrough in the application of domestic high-end equipment and innovative technology.，For domestic tunnel boring machine in long distance、The application of deep buried water diversion project provides an effective case.，It will provide valuable experience and demonstration for the construction of major water conservancy projects in China。