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，Duration 00:51 China Railway Equipment Development

Earth pressure shield machine “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

Marking China's Shield Technology

First successful application in Germany

Project overview

The thermal tunnel project is used to connect the industrial area and the urban area for heating.“ 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。The tunnel and its supporting underground facilities will store and transport waste heat generated during operations in the industrial zone south of Hamburg to the new port city north of Hamburg.，Its core is to recover the waste heat from the production process in the industrial area.，And store the heat underground through salt water.，Replace energy sources such as natural gas and coal，Provide heat for local residents in winter。

Equipment introduction

In order to effectively deal with the high water pressure environment in the project and the strict control requirements for the settlement accuracy，The company 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，The company uses a localized service team.，Respond quickly、Efficient service，Provide solid technical support for the smooth tunneling of the equipment。During equipment tunneling，Achieved the highest daily excavation of 20.A good score of 4 meters。