Earth Pressure Balance Shield Machine "Kunpeng" with the Largest Diameter of Composite Stratum Tunnel in China Rolls off the Production Line of Railway Construction Heavy Industry

September 15，The earth pressure balance Shield Machine with the largest diameter of composite stratum tunnel in China is jointly built by China Railway Construction Heavy Industry and China Railway 11th Bureau.“Kunpeng”（Shenjiang 3）Offline in the primary industry park of Railway Construction Heavy Industry。The cutter head of the Shield Machine is coated with“Kun Peng”Pattern，Have“The ROC rises with the wind in one day.，Up to ninety thousand miles”A beautiful moral。

“Kunpeng”Excavation diameter of Shield Machine 13.24 meters，Installed power 9200 kW，Total weight 3350 tons，Will be applied to the Shenjiang Railway ProjectSJSG-Bid 7 construction。During the construction of the project，“Kunpeng”Need to complete up to 3.84 kilometers of tunneling tasks。The main crossing geology of the tunnel section is medium.、Strong、Completely weathered granite、Silty clay、Sand layer，Need to underpass the river、Highway、Bridges and other risk sources，With large excavation section、The burial depth is large、Complicated geological conditions and other construction difficulties。

To cope with the engineering geological and hydrological conditions of the project，China Railway Construction Heavy Industry Co., Ltd. combines rich construction technology experience in the past.，For“Kunpeng”The shield machine is equipped with a telescopic main drive、Ynchronous single and double liquid grouting、Pneumatic-assisted tunneling、Synchronous assembly of integral large box culvert、Box culvert fine adjustment and many other advanced functions，So that that shield machine can effectively cope with various complex geology and work conditions，It provides a strong guarantee for the smooth construction of Shenjiang Railway Project.。

Shenjiang Railway is located in the center of Dawan District.，It is not only our country“Eight vertical and eight horizontal”An important part of the coastal corridor of the high-speed rail network，It is also the main cross-river inter-city corridor in the Pearl River Delta region.，The line starts from Shenzhen Xili Station.，It stops at Jiangmen Station，The main line is 116 kilometers long.。After the completion of the project, the life circle of Guangdong-Hong Kong-Macao Greater Bay Area will be realized.、Half-hour high-speed rail interconnection in the economic circle，It has become a strong support for further strengthening the integrated development of Dawan District and the construction of Guangdong Free Trade Zone.。

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