December fourth，It's the seventh“World Tunnel Day”，Underground Heat Storage and Heating Tunnel Project from Hamburg, Germany（Hereinafter referred to as：Thermal tunnel）News of victory came，Small-diameter earth pressure shield machine developed by China Railway Equipment “China Railway 1144”Successfully crossed the Elbe River and arrived at the north bank of the well.，Successfully completed the Hamburg thermal tunnel excavation task，It marks the first successful application of China's shield technology in Germany.。

Hamburg Thermal Tunnel Project as a Heating Link between Industrial Area and Urban Area“ Throat ”Passageway，The total length is about 1165 meters.，The whole tunnel runs under the second largest river in Germany.——River Elbe，Excavation geology is mainly gravel.、Sand、Sandy soil、Clay、Predominantly sedimentary limestone，The average burial depth is 30 meters.，The maximum water and soil pressure is about 4.5 bar。

In order to effectively deal with the high water pressure environment in the project and the strict control requirements for the settlement accuracy，China Railway Equipment combines the needs of German customers，Tailor-made for an excavation diameter of 4.57 meters，Earth pressure balance shield machine with a total length of about 278 meters，The equipment integrates many advanced technologies.，At the same time，It is also the first time to introduce coincidence on small-diameter shield.CEStandard independent cabin design，As well as humanize measures such as a rotary segment trolley and that like，The safety of the equipment during operation is greatly enhanced.、Comfort and environmental protection。

To ensure the smooth penetration of the equipment，China Railway Equipment adopts localized service team，Respond quickly、Efficient service，Quickly meet customer needs。During tunneling of equipment，The device has encountered any unexpected problems，The service team can arrive at the construction site at the first time.，Provide solid technical support for smooth equipment penetration。During tunneling，The equipment has achieved the highest daily tunneling of 20.A good score of 4 meters。

The equipment runs through smoothly，Press for the Thermal Tunnel Project in Hamburg, Germany“Accelerator key”。It is reported that，After the completion of the project，The waste heat generated during the operation of the industrial zone in the south of Hamburg will be converted into urban heating and transported through the tunnel to the new port city in the north of Hamburg.，Replace existing coal-fired power plants and natural gas heating，Heating for local residents in Hamburg in winter，Improve the living standards of local residents。