When the West Line Tunnel of the East Sixth Ring Road Reconstruction Project is about to be completed，As a reflection of the great achievements of the Party and the state in the new era of ten years.、Of great change“Cultural relics of the new era”。Recently，By China Railway Construction Heavy Industries、First Group、The first domestic 16-meter Shield Machine jointly built by China Railway 14th Bureau“Jinghua”（Model）Exhibition Hall of History of the Communist Party of China in Tibet。
The first 16m Shield Machine made in China
Jinghua
September 27, 2020，“Jinghua”Offline in Changsha No.1 Industrial Park of Railway Construction Heavy Industry。This one“Big Mac”The maximum excavation diameter of the Shield Machine is 16..07 meters，The whole machine is 150 meters long.，Total weight 4300 tons，So far, the largest diameter shield machine developed in China has been born.。
The equipment is huge，Like a steel dragon lying across the workshop.，Over 5 stories in height，Cutterhead painting extracts visual elements from Peking Opera facial makeup，It takes the red facial makeup representing loyalty, bravery and righteousness in Peking Opera as the design prototype.，The appearance is bright and striking，Highlight the regional cultural characteristics of Beijing。
The first 16m shield machine made in China“Jinghua”Super burning video
For engineering needs，“Jinghua”Normal pressure tool change is configured、Telescopic main drive、Efficient Transportation and Assembly Technology of Heavy-duty Segments with Super Large Diameter、Fficient high-power slurry circulation system、High-precision excavation face gas-liquid independent balance control and other core technologies；At the same time, the tube ring convergence measurement is innovatively carried.、Pipe ring flatness detection、Pipe ring selection、Automatic shield tail clearance measurement、Ynchronous double-liquid grouting、System devices such as three-way obturator and tube changing device，Make high strength、High risk、Highly polluting tunnelling operations are transformed into relatively safe、Efficient green construction mode。
Hardcore offline Fame spreads far and wide
For a moment，“Jinghua”Message of successful offline，Attracted the People's Daily、Xinhua News Agency、China National Radio、Dozens of central mainstream media and local media, such as CCTV, concentrated on interviews and reports on the spot.，The network is bigVFollow up synchronously，Super Burning Mixed Cut Video on Sina Weibo、Bilibili and other network platforms are widely disseminated.，Read more than 50 million，More than 1.25 million video views。Same year，The largest shield machine made in China“Jinghua”Selected in Railway Construction Heavy Industry Offline“Top Ten News of China's Industry in 2020”。
The origin of artifacts has attracted much attention.
Time sequence comes to May 28, 2021.，The 20th Academician Congress of the Chinese Academy of Sciences、The 15th Academician Congress of the Chinese Academy of Engineering and the 10th National Congress of the Chinese Association of Science and Technology，General Secretary of the CPC Central Committee、President of the country、Central Military Commission Chairman Xi Jinping pointed out.“The shield machine with the largest diameter was launched smoothly.”。
At the same time，At《Questions and Answers on the Study of Xi Jinping's Socialist Thought with Chinese Characteristics in the New Era》Medium，“Jinghua”It has also become from Made in China to Created in China.，Cases of promoting high-quality development。
October 26 of the same year，General Secretary Xi Jinping Visits the Country“The 13th Five-Year Plan”Science and Technology Innovation Achievement Exhibition，“Jinghua”（Model）As a representative of the industry facing the main battlefield of the economy, it shines on the stage.，It has become a national advanced manufacturing industry and a deep integration of scientific and technological innovation.，A typical sample of boosting the technological upgrading of manufacturing industry。
September 27, 2022，“Jinghua”（Model）Appearance“Strive for a new era”Theme Achievement Exhibition，Once again accept the inspection of the party and state leaders。
Set records and win the future
November 1, 2021，Good News from the Reconstruction Project of the East Sixth Ring Road in Beijing，“Jinghua”Monthly footage of 542m，It has set a new record for the monthly footage of a shield machine with a diameter of more than 14 meters.，Tunnel continuity is achieved、Efficient、High quality、Environmental protection construction。
September 25, 2022，With“Jinghua”A precise exit hole.，The middle air shaft of the shield machine was successfully received by the West Line Tunnel of Beijing East Sixth Ring Road Reconstruction Project.，It marks the first section of the longest shield expressway tunnel in China.。
So far，“Jinghua”The shield machine has completed 7314 meters of tunnel excavation.，Successfully overcome all risk sources at or above the second level，The tunneling footage of the shield machine reaches 542 meters per month.、The maximum single-day footage reaches 24 meters.，The settlement is always controlled within 3 mm.，Is sprinting to Dongtong.。
