On July 15, the Earth Pressure Balance/TBM dual-mode shield tunneling machine "CRSH No. 0061," developed by China Railway Shanhe Engineering Equipment Co., Ltd., successfully rolled off the production line at the China Railway Shanhe Zhongshan Base. The equipment will be applied to the Shenzhen-Daya Bay Intercity Railway (Shenzhen Airport to Daya Bay Intercity) project constructed by China Railway No. 5 Engineering Group.

Jing Guangjun, Deputy Party Secretary, Vice Chairman and General Manager of Guangzhou Industrial Investment Holdings (GIIH) and Chairman of Sunward Intelligent Equipment, Zhou Xinglin, Second-Level Researcher of the Planning and Development Division of the Guangzhou Municipal State-owned Assets Supervision and Administration Commission, Chen Bin, Deputy General Manager of China Railway No. 5 Engineering Group Co., Ltd., Zhang Yibing, Deputy General Manager of Guangzhou Metro Group Co., Ltd. and Chairman of the Guangzhou Rail Transit Industry Alliance, as well as representatives of the owner, client units, GIIH Group and the company, totaling more than 50 people, attended the rollout ceremony. Tang Biao, senior executive of Sunward Intelligent and Chairman of China Railway Shanhe, presided over the ceremony, and Zhao Youhong, Deputy General Manager of China Railway Shanhe, gave a brief project introduction.

Jing Guangjun stated that China Railway Shanhe moved south to Guangzhou, and in just half a year the first large-diameter dual-mode shield tunneling machine was successfully rolled off the line, demonstrating with high efficiency the enterprise spirit of refusing mediocrity, arduous entrepreneurship, courage to leap forward and pursuit of excellence, and showcasing the good spirit and exemplary role in promoting the high-quality construction of a high-end equipment R&D and manufacturing base in the Guangdong-Hong Kong-Macao Greater Bay Area. As a sub-chain leader enterprise in Guangzhou's rail transit industry chain and one of the main state-owned capital platforms for building Guangzhou's advantageous rail transit industry during the 14th Five-Year Plan period, GIIH hopes to carry out multi-dimensional and close cooperation with Guangzhou Metro, Shenzhen Metro and construction central state-owned enterprises such as China Railway and China State Construction, innovate cooperation models, bear more fruitful cooperation results, and jointly write a new chapter for the bright future of the rail transit industry in the Guangdong-Hong Kong-Macao Greater Bay Area.

Zhou Xinglin stated that the large-diameter dual-mode shield tunneling machine newly developed by China Railway Shanhe, a shield tunneling machine enterprise under GIIH, is also a brilliant achievement of Guangzhou's high-end equipment manufacturing industry integration. He hopes that GIIH will firmly grasp policies and trends of the times, continue to practice Guangzhou's strategic requirement of "adhering to industry first and building the city through manufacturing," deeply promote the integration of the industrial chain, innovation chain and capital chain, build chain leader enterprises and modern industrial clusters, and continuously enhance the level and energy of serving Guangzhou's urban development. At the same time, he also hopes that municipal state-owned enterprises will strengthen cooperation and innovate cooperation to jointly promote Guangzhou's high-quality development.

Chen Bin stated that the successful rollout of the large-diameter dual-mode shield tunneling machine tailor-made by China Railway Shanhe for the Shenzhen-Daya Bay Intercity project undertaken by China Railway No. 5 Engineering Group marks a new step in the cooperation between the two units. In the future, he hopes to carry out all-round, sustained and effective cooperation with GIIH in intelligent manufacturing, equipment application, construction technology, business development and other aspects. With a solid foundation of cooperation over many years, new breakthroughs in cooperation areas will be achieved, and a new chapter of cooperation will be written in the construction of the Guangdong-Hong Kong-Macao Greater Bay Area.

Zhang Yibing stated that the successful rollout of the first large-diameter dual-mode shield tunneling machine in the Guangdong-Hong Kong-Macao Greater Bay Area is a major progress for China Railway Shanhe in settling in Guangzhou and promoting industrial development, truly realizing the implementation of production capacity in shield equipment manufacturing. Taking this opportunity, the industry alliance is willing to give full play to its role as a platform for promoting industrial synergy, advance the complementary and shared advantageous resources between GIIH Group and enterprises in the industrial chain, and jointly promote the development of the shield tunneling machine industry.

△ After the rollout ceremony, Zhao Youhong, Deputy General Manager of China Railway Shanhe, guided the leaders and guests present to inspect the shield tunneling machine on site.

The "China Railway Shanhe 0061" Earth Pressure Balance/TBM dual-mode shield tunneling machine rolled off the line this time has an excavation diameter of 9.13 meters, an overall length of about 115 meters and a total weight of more than 1,500 tons. The equipment's tunneling section is 3,085 meters long, and the main risk sources crossed by the section are the Yantian Tunnel, the subgrade section of the Xiamen-Shenzhen Railway, the Paibang Interchange, the Pingyan Railway and the Bainikeng building complex. In response to the special geology and construction risks of the Shenzhen-Daya Bay Intercity Railway Bid Section 2, Section 4, such as "long-distance hard quartz sandstone strata," "local fault zone strata" and "upper-soft lower-hard composite strata," the China Railway Shanhe No. 0061 shield tunneling machine adopted targeted optimized designs, effectively ensuring safe and efficient tunneling of the equipment under such complex working conditions.

It is reported that the Shenzhen-Daya Bay Intercity Railway is an important component line of the intercity railway network in the Guangdong-Hong Kong-Macao Greater Bay Area. It connects multiple outer clusters such as Bao'an, Longhua, Longgang and Pingshan, fills the gap in Shenzhen's ring corridor, and is an urban cluster express line supporting the expansion of Shenzhen's urban space. After the project is completed, it will further strengthen the rapid connection between eastern, western and central Shenzhen, and has important strategic significance for the interconnection of transportation in the Bay Area and the integration of the Shenzhen-Dongguan-Huizhou metropolitan area.