Recently，China's deepest submarine tunnel shield machine jointly built by China Railway Construction Heavy Industry and China Railway 14th Bureau“Shenjiang No.1”Successfully reached 106 meters under the sea.，Complete the excavation task of 3590 meters，This is the deepest underwater tunneling record of China's shield machine.，It is also the deepest record of China's high-speed rail shield tunnel reaching the seabed.。Dragon through the sea、Be invincible，“Shenjiang No.1”The news of breaking the world record came out.，It attracts wide coverage from the mainstream media.。

People's Daily

August 19，At the construction site of Zhujiangkou Tunnel of Shenjiang Railway，Jointly built by China Railway Construction Heavy Industry and China Railway 14th Bureau“Shenjiang No.1”The shield machine reaches 106 meters under the sea.，Successfully complete the tunneling task。This is the deepest underwater tunneling record of China's shield machine.，It is also the deepest record of shield tunneling in the high-speed rail of the world.。

It is reported that，The total length of Zhujiangkou Tunnel is 13.69 kilometers，Hydrological and geological conditions are extremely complex.，The project is very difficult。During tunneling，The shield machine passes through 13 kinds of strata successively、Five kinds of composite geology。The lowest point of the shield section of the tunnel is 106 meters below the water surface of the Pearl River Estuary.，An area equivalent to the size of a fingernail bears 10.Six kilograms of pressure.，There is no engineering experience and design standard with the same conditions for reference in China.。

Introduction of relevant technical personnel of Railway Construction Heavy Industry，For construction problems，“Shenjiang No.1”The shield machine is equipped with a high-load main drive.、A series of intelligent systems such as synchronous single and double liquid grouting，Maximum pressure bearing capacity up to 12bar，Thereby greatly improving the adaptability under the working condition of seabed ultrahigh water pressure.，Ensure that the shield machine is under ultra-high water pressure、Super deep burial、The unfavorable geological section with developed fissures is continuous、Stable、Safe tunneling。

CCTV《News broadcast》

CCTV News

August 19，106 meters below the Pearl River Estuary，With“Shenjiang No.1”Shield Machine Successfully Completed 3590 Meters of Tunneling Task，The Pearl River Estuary Tunnel of Shenjiang Railway successfully reached the deepest part of the seabed.，This is the deepest record of underwater shield tunneling in China.，It is also the deepest record of shield tunneling in the high-speed rail of the world.。After the completion of the project，China's high-speed rail will fly at the bottom of 100 meters.。

Total length 13.The 69-kilometer Zhujiangkou Tunnel is a key control project of the Shenjiang Railway.，The mining method is adopted+Shield combined construction。Among，China Railway No.14 Engineering Group Co., Ltd. adopts one excavator with a diameter of 13.42 meters“Shenjiang No.1”Shield machine，3590 meters from Dongguan to Nansha, Guangzhou。

According to introduction，“Shenjiang No.1”The shield machine was launched in December 2021.，It took 969 days to dig downhill all the way.，Finally, it reached the lowest point of 106 meters.。

It is reported that，Shenjiang Railway is located in the center of Guangdong-Hong Kong-Macao Greater Bay Area.，It's the whole country“Eight vertical and eight horizontal”The high-speed railway network is an important part of the coastal corridor.，After completion and opening, it is conducive to creating a half-hour life circle in the Guangdong-Hong Kong-Macao Greater Bay Area.、Economic Circle，Shenzhen's Qianhai Free Trade Zone and Guangzhou's Nansha Free Trade Zone will be interconnected by high-speed rail for half an hour.。

Xinhua News Agency

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The other day，New progress was made in the construction of the Guangdong-Hong Kong-Macao Greater Bay Area Shenjiang Railway.，Subsea Tunnel Shield Machine Developed by China“Shenjiang No.1”Complete the tunneling task，Successfully reach 106 meters below sea level，It marks that China's large shield has set a new record for underwater excavation.。The reporter visited the Pearl River Estuary Tunnel, the control project of the Shenjiang Railway.。

CCTV network

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August 19，106 meters underwater in the Pearl River Estuary，With“Shenjiang No.1”The shield machine successfully completed the established excavation task of 3590 meters.，The Pearl River Estuary Tunnel Project of Shenjiang Railway, which was constructed by the 14th Bureau of China Railway, successfully reached the deepest place of 106 meters under the sea.，This is the deepest record of China's large shield underwater excavation.，It is also the deepest record of the world's high-speed rail shield tunnel.。

It is reported that，Total length 13.The 69-kilometer Zhujiangkou Tunnel is a key control project of the Shenjiang Railway.，The mining method is adopted+Shield combined construction。Among，China Railway No.14 Engineering Group Co., Ltd. adopts one excavator with a diameter of 13.42 meters“Shenjiang No.1”Shield machine，3590 meters from Dongguan to Nansha, Guangzhou。The person in charge of Shenjiang Railway Project of China Railway 14th Bureau introduced.，The lowest point of the shield section of the tunnel is 106 meters below the water surface of the Pearl River Estuary.，“Shenjiang No.1”The maximum bearing water and soil pressure of the shield machine can reach 10.6 bar，An area equivalent to the size of a fingernail bears 10.Six kilograms of pressure.，There is no engineering experience and design standard with the same conditions for reference in China.。

According to introduction，“Shenjiang No.1”The shield machine was launched in December 2021.，It took 969 days to dig downhill all the way.，Finally, it reached the lowest point of 106 meters.。

Shenjiang Railway starts from the newly-built Xili Station in Shenzhen，Westward through Dongguan、Guangzhou、 Zhongshan 、Jiangmen，Connect to Jiangmen Station，Total length of main line 116.12 kilometers，The design speed is 250 kilometers per hour，It's China“Eight vertical and eight horizontal”An important part of the coastal corridor of the main corridor of the high-speed railway network。After the completion and opening of the line，It is conducive to creating a half-hour life circle in the Guangdong-Hong Kong-Macao Greater Bay Area.、Economic Circle。

The reporter learned from China Railway Construction Corporation Limited.，August 19，Subsea Tunnel Shield Machine Developed by China“Shenjiang No.1”Complete the tunneling task，Successfully reach 106 meters below sea level，This also marks that China's large shield has set a new record for underwater excavation.。

Total length 13.The 69-kilometer Zhujiangkou Tunnel is the control project of the Shenjiang Railway.，Adopt“Mining method+Shield method”Combined construction。Excavation diameter up to 13.42 meters“Shenjiang No.1”Shield machine tunneling from Dongguan to Nansha, Guangzhou 3.59 kilometers，It passes through 13 kinds of strata successively、Five kinds of composite geology。

According to Li Bing, the project manager of the 14th Bureau of China Railway, the construction unit,，The lowest point of the shield section of the tunnel is 106 meters below the water surface of the Pearl River Estuary.，Maximum water pressure up to 1.06 MPa，The area equivalent to the size of the fingernail of the shield machine needs to bear 10.Six kilograms of pressure.，There is no engineering experience and design standard with the same conditions for reference in China.。

For construction problems，Tailored by the construction team“Shenjiang No.1”Shield machine，Strengthen the R & D and application of intelligent construction technology，Concentrate on developing ultra-high water pressure、Long-distance hard rock tunneling cutter quick replacement、Seven scientific and technological innovation research topics, such as in-situ disassembly of submarine small space shield machine，Ensure that the shield machine is under ultra-high water pressure、Super deep burial、Safe and efficient tunneling in unfavorable geological section with developed fissures。

Hunan Daily

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Hunan Daily, August 20（All-media reporter Xie Zhuofang）August 19，At the construction site of Zhujiangkou Tunnel of Shenjiang Railway，Jointly built by China Railway Construction Heavy Industry and China Railway 14th Bureau“Shenjiang No.1”The shield machine reaches 106 meters under the sea.，Successfully complete the tunneling task。This is the deepest underwater tunneling record of China's shield machine.，It is also the deepest record of shield tunneling in the high-speed rail of the world.。

It is reported that，The total length of Zhujiangkou Tunnel is 13.69 kilometers，Hydrological and geological conditions are extremely complex.，The project is very difficult。During tunneling，The shield machine passes through 13 kinds of strata successively、Five kinds of composite geology。The lowest point of the shield section of the tunnel is 106 meters below the water surface of the Pearl River Estuary.，An area equivalent to the size of a fingernail bears 10.Six kilograms of pressure.，There is no engineering experience and design standard with the same conditions for reference in China.。

Introduction of relevant technical personnel of Railway Construction Heavy Industry，For construction problems，“Shenjiang No.1”The shield machine is equipped with a high-load main drive.、A series of intelligent systems such as synchronous single and double liquid grouting，Maximum pressure bearing capacity up to 12bar，Thereby greatly improving the adaptability under the working condition of seabed ultrahigh water pressure.，Ensure that the shield machine is under ultra-high water pressure、Super deep burial、The unfavorable geological section with developed fissures is continuous、Stable、Safe tunneling。