The Third Plenary Session of the 20th CPC Central Committee proposed that high-qualitydevelopment is the primary task of comprehensively building a modern socialist country.

In recent days, the vast number of employees of China Railway 14th Bureau Group have deeply studied and heatedly discussed the spirit of the Third Plenary Session of the 20th CPC Central Committee. All units have actively served major national strategies, and a number of key projects, livelihood projects, strategic emerging industry and future industry landmark projects have made new progress.

Progress bar refreshed, good news frequently reported from key project construction

■ Joint commissioning and testing started on the Zhenjiangguan-Huangshengguan section of the Sichuan-Qinghai Railway

On July 21, the joint commissioning and testing of the Zhenjiangguan-Huangshengguan section of the Sichuan-Qinghai Railway, in which China Railway 14th Bureau Group participated in construction, was launched. The construction section of China Railway 14th Bureau Group is about 24 kilometers long, located on the western Sichuan plateau and crossing multiple seismically active fault zones. The project department adopted various advanced geological prediction methods and highly mechanized operations throughout the entire process. After the entire line opens to traffic, it will be of great significance for improving the railway network layout in the northwest region.

■ The tunnel with the largest span cross-section in the Shaanxi section of the Kangyu High-speed Railway successfully entered the portal

On July 21, the Langao No. 2 Tunnel of the Kangyu High-speed Railway, constructed by China Railway 14th Bureau Group, successfully entered the portal, marking that the tunnel with the largest span cross-section in the Shaanxi section of the Kangyu High-speed Railway has entered the substantive construction stage. This tunnel is a variable cross-section tunnel, with high construction safety risks and great technical control difficulties. After the project is completed, the railway travel time from Ankang to Chongqing will be shortened from nearly 7 hours to 1.5 hours.

■ Closure section construction started on the Dongjin Yellow River Bridge

At the Yellow River estuary in Dongying, Shandong, the Dongjin Yellow River Bridge, the largest A-shaped cable-stayed bridge in the Yellow River Delta, has started closure section construction. The builders adhere to the principle of "not letting a single welding slag fall into the Yellow River" and practice the concept that "lucid waters and lush mountains are invaluable assets." After the bridge is completed, it will further strengthen the ability of the Yellow River Delta region to connect with the national expressway network.

■ Construction started on the Pingla Tunnel of the Huangbai Railway

The Pingla Tunnel, a key and difficult control project of the Huangtong-Baise Railway, has entered the main tunnel construction stage. The tunnel is about 13 kilometers long and crosses two major fault zones, placing strict requirements on tunnel construction technology and safety management. The Huangbai Railway is an important component of the main corridor of the New Western Land-Sea Corridor. After completion, it will become a backbone freight corridor with the shortest transport distance, optimal efficiency and shortest operating time from Sichuan, Chongqing, Guizhou and Guangxi to the Beibu Gulf Port.

■ The Jiulishan Tunnel of the Yanyu Railway entered main tunnel construction

The exit section of the Jiulishan Tunnel, a key and difficult control project of the Yanyu Railway, has entered the main tunnel construction. The tunnel is about 9 kilometers long and is located in the loess ridge and gully area of the Loess Plateau. The project team scientifically and reasonably prepared special construction plans and adopted advanced geological prediction and other technologies. After the Yanyu High-speed Railway is completed, it will form a longitudinal corridor of the Shaanxi high-speed railway network and help the high-quality economic and social development of the old revolutionary base areas.

■ The "Ruian" shield machine of Qingdao Metro Line 5 launched

Recently, after preparations such as translational station crossing and equipment maintenance, the shield machine "Ruian" was successfully launched again, starting a new underground journey on the right line of the Hudao Station-Haiyun'an Station section of Qingdao Metro Line 5. The stratum strength in this shield tunneling section is high, buildings and pipelines are densely distributed along the route, and settlement control requirements are high. The construction team adopted multiple intelligent devices and advanced integrated technologies to ensure smooth construction.

■ The main drive of the "Shanhe" shield machine lowered into the shaft, "world's largest" accelerates assembly

Recently, the main drive of the "Shanhe" shield machine for the Huanggang Road Yellow River Crossing Tunnel Project in Jinan was successfully lowered into the shaft. This project is the world's largest diameter underwater shield tunnel and one of the major north-south passages across the Yellow River. After completion, it will help achieve interconnection between Jinan's main urban area and the Starting Area for Replacing Old Growth Drivers with New Ones, and promote Jinan's transition from the "Daming Lake Era" to the "Yellow River Era."

■ Construction started on the expansion project of Hotan Maternal and Child Health Station

Recently, the expansion project of Hotan Maternal and Child Health Station officially started construction, with a total construction area of 6,072.24 square meters. The project department actively organized construction forces and scientifically prepared the construction organization plan. The implementation of this project can provide better medical services for women and children in Hotan and improve the health level of local people.

■ Construction of the Yantai Rongfa Nuclear Power Underwater Equipment Project started smoothly

The Yantai Rongfa Nuclear Power Underwater Equipment Project has started smoothly. As a key project in Shandong Province's construction of a strong maritime province, its main construction content is to expand a heavy-duty workshop within the existing plant area. After the project is completed, it will produce 95,000 tons per year of ultra-large high-end forgings for nuclear power, special underwater equipment and the petrochemical field, and can break through the "bottleneck" problems of large nuclear power and underwater special equipment.

■ The standard factory building project of the Xinjiang Shima Integrated Development Pilot Zone completed

Recently, the standard factory building construction project of the Xinjiang Shihezi-Manasi Integrated Development Pilot Zone, for which China Railway 14th Bureau Group was the general contractor, was completed. The project is adjacent to the Urumqi area of the China (Xinjiang) Pilot Free Trade Zone, with a total construction area of 174,500 square meters, including 13 standard factory buildings. After the project is put into use, it will drive breakthroughs in local infrastructure co-construction and sharing, complementary industrial development advantages, and mutual benefit in public services.

New business forms and new drivers, strategic emerging industries continuously updated

■ Green environmental protection | The municipal wastewater treatment plant project invested, constructed and operated by China Railway Construction passed completion acceptance

Recently, the Phase II project of the Tianjin Zhangguizhuang Wastewater Treatment Plant, in which China Railway 14th Bureau Group participated in construction, successfully passed completion acceptance. This project is the largest single wastewater plant project in China's municipal wastewater treatment field in recent years using the TOT+BOT model. After completion, the daily wastewater treatment capacity will be increased to 450,000 tons, serving a population of 1.28 million. China Railway 14th Bureau Group constructed 33 individual structures and introduced automatic control systems and a smart water platform, which can ensure stable compliance of wastewater treatment and make the tailwater quality meet the highest standard, Grade I-A discharge standard.

■ Green environmental protection | Steel plant waste heat supplies residential heating and fishery aquaculture

The Rizhao Shangang waste heat project is China's ** "residential + fishery" integrated clean energy heating project. It adopts "vacuum phase-change thermal energy collection" technology to extract waste heat from slag flushing circulating water, flue gas and high-temperature air in the steel plant production process nearby. While achieving energy conservation and emission reduction, it meets the needs of 300,000 square meters of centralized residential heating and 1.2 million square meters of fishery aquaculture water insulation. Currently, 4 heat source stations are in operation, 6 have completed construction, and 2 are under construction. After being put into operation, it can save 85,800 tons of standard coal and reduce 230,000 tons of carbon dioxide emissions annually.

■ Smart logistics | Pre-acceptance started for the Horgos Road-Rail Intermodal International Logistics Center Project

The Horgos Road-Rail Intermodal International Logistics Center Project has entered the final sprint stage and started the pre-acceptance mode. The project is located in the southern industrial park of the Horgos area of the China (Xinjiang) Pilot Free Trade Zone, covering an area of 3,360 mu, with a construction area of 659,000 square meters. It mainly constructs 36 individual buildings and supporting roads under the "one park, seven zones and four platforms" layout, including the customs supervision area, comprehensive supporting area, logistics storage area, and railway operation area.

■ Smart logistics | Offshore construction of the Dongying Port Container Terminal Project completed

Two quay cranes of the Dongying Port Container Terminal Project successfully completed landing installation, marking the end of offshore construction of the Yellow River Delta ** dedicated container terminal project. As an important support for implementing the development strategy of the Yellow River Delta Efficient Ecological Economic Zone and the Shandong Peninsula Blue Economic Zone, after completion, the project will be of great significance for Dongying Port to build an important sea outlet of the Yellow River Basin and a main port of the provincial capital economic circle.

■ Modern agriculture | The main structure of the supporting service area project of the National Nanfan Scientific Research and Breeding Base capped

The main structure of the National Nanfan Supporting Service Area Project, a key project in Hainan Province, has all been capped, with a total construction area of about 216,000 square meters, including 58 individual buildings. After completion, the project will be built into a diversified agricultural-tourism integration base integrating seed industry scientific and technological innovation, agricultural production, farming experience, science popularization exhibition, and cultural exhibitions, accelerating the integration and aggregation of Nanfan seed industry innovation resources, helping the revitalization of the seed industry, and contributing to the construction of the Hainan Free Trade Port.

■ New energy | Fan hoisting successfully completed for the Datang Jingtai Qianfeng Fan Technical Transformation and Relocation Project in Gansu

Recently, fan hoisting for the Datang Jingtai Qianfeng Fan Technical Transformation and Relocation Project was successfully completed. The construction site is located in the transition zone between the Loess Plateau and the desert. The construction team formulated special plans to fully ensure the safe and orderly progress of hoisting tasks. After relocation and installation, it can output 7.2 million kWh of clean electricity annually, save about 2,300 tons of standard coal and reduce about 7,100 tons of carbon dioxide emissions annually, with significant energy conservation and emission reduction effects.

Empowering the transformation and upgrading of traditional industries with new quality productive forces

■ Automated intelligent manufacturing platform promotes new upgrades in industrialized production

The Lidong reconstruction and expansion project adopted intelligent CNC unit equipment and fully used intelligent steel reinforcement cage welding robots, fully automatic CNC seam welding machines, intelligent steel reinforcement hoop processing robots, etc., greatly improving production efficiency and product quality. The project department also fully adopted sand and gravel separators and wastewater treatment systems to centrally collect and treat waste concrete and wastewater generated during construction and production. The treated granular materials and water can be recycled. After the project is completed, various energy conservation and emission reduction measures are expected to save more than 1,000 tons of granular materials and more than 5,000 cubic meters of water, promoting green, low-carbon and high-quality development through intelligent construction.

■ Segment shipment officially started for the Fenhu Tunnel

Recently, segment shipment officially started for the Fenhu Tunnel of the newly built Nantong-Ningbo High-speed Railway, and the Fenhu Tunnel is about to officially start shield tunneling. The Nantong-Suzhou-Jiaxing-Ningbo Railway is an important component of the "Coastal Corridor," one of the main corridors of the national "Eight Vertical and Eight Horizontal" high-speed railway network, and is a national key project of the 14th Five-Year Plan. It is of great significance for optimizing and improving the intercity comprehensive transportation network of the Yangtze River Delta urban agglomeration.

■ Intelligent production line ensures segment production for the Haizhu Bay Tunnel

Recently, the Haizhu Bay Tunnel Project undertaken by the South China Regional Prefabrication Base of China Railway 14th Bureau Group successfully completed the segment production task of 2,114 rings. The prefabrication base team actively promoted the upgrading and transformation of intelligent production lines and successively introduced more than 10 intelligent devices and information systems and multiple innovative technologies, including mold cleaning and oiling robots, intelligent surface finishing robots, unmanned transport vehicles, and BIM visual management platforms, providing strong guarantees for tunnel construction.