October 26, the diameter of 15.03 meters of mud balance shield machine in the iron equipment equipped with shield assembly shop officially off the assembly line, which is so far our own design and manufacture of the largest diameter mud balance shield machine, its success off the assembly line Foreign brands over the years unification of the world's large diameter shield situation.
To seize the technical high ground for the first domestic '8 degree earthquake zone' submarine tunnel
The large diameter muddy water balance shield machine has the characteristics of small influence on the surrounding environment, high degree of factory operation, high precision of ground settlement control, safe and fast. It is the main form of cross-river crossing sea tunnel construction in China. It is also the '2025' Focus on the development of high-end equipment.
The line of the shield machine length of 100 meters, weighing 4,000 tons, to fill the domestic large diameter mud on the balance of the development of the blank machine blank.
According to the Chinese Academy of Engineering Yang Huayong introduction, 'the device uses a high pressure capacity system integration design, atmospheric pressure tool change technology, telescopic swing main drive technology, dual gas pressure control technology and many other innovative technologies, successfully cracked our country In the large-diameter composite mud shield technology there are 'technical innovation ability weak, the key components subject to people, integrated product reliability is low, high-end industrial chain lack of' technical bottlenecks.
'This equipment for China's shield procurement costs savings of nearly 100 million yuan, but also marks the design and manufacture of China's shield machine into a high-end, is to seize the commanding world of the world road rig.' China Railway Equipment Chairman, Party Secretary Tan Shunhui Say.
It is understood that the off-line shield machine will be used in the Shantou Bay Tunnel project, the project is the first octave earthquake area of large diameter submarine shield tunnel, is currently the most difficult comprehensive large-scale shield tunneling tunnel, It is to contact Shantou north and south sides of the major livelihood projects. After the completion of the project, will become the only one with both urban road function and a highway underwater shield tunnel.
Practice 'three changes', to promote China to create a change to China
With the rapid development of China's economy and society, the regional central cities, the core cities of the urban agglomeration, and the interconnection between the big cities, the domestic large shield construction market showed a blowout trend, and the demand for large diameter shields was urgent.
May 10, 2014, comrade comrades in the inspection of iron equipment in the assembly shop, the proposed 'to promote China's manufacturing to China to create a change in China's speed to China's quality change, the Chinese products to the Chinese brand change'. China Railway equipment and a number of central enterprises Adhere to innovation-driven development, improve the quality of the supply system, and constantly seize the commanding heights of the world's road boring machine technology.
3 years, in the iron equipment, the largest cross-section hard rock boring machine, the first domestic hard rock mud pipe jacking machine, the first domestic double shield TBM, the world's smallest diameter hard rock TBM, the world's first horseshoe shield, the largest domestic diameter Mud and water balance shield machine, a series of new products continue to refresh records.
'China Railway equipment has become the largest, the world's second tunnel equipment suppliers, products exported overseas 9 countries and regions, the Chinese brand in the world market growing influence.' China Railway Equipment Group Party Secretary, chairman Tan Shunhui said.
According to reports, following the 15.03 meters of the largest domestic diameter mudshield balance shield machine successfully off the assembly line, the iron equipment in the intensive development of 15.8m diameter larger shield, the equipment will be manufactured next year, once again refresh the domestic design and manufacture of large cross-section shield Machine capacity record.
Starting 5 'national standard' boost 'Chinese equipment' to go abroad
On the same day, five national standard conferences were held at the National TBM Industrialization Center of China Railway Equipment, "Full Crosscut Tunnel Boring Machine - Terminology and Commercial Specifications".
The five national standards are "Full Crosscut Tunnel Boring Machine - Terminology and Commercial Specifications", "Full Crosscut Tunnel Boring Machine - Earth Pressure Balance Shield Machine", "Full Crosscut Tunnel Boring Machine - Shield Machine Safety Requirements "Full-section tunnel boring machine - open rock tunnel boring machine", "full-face tunnel boring machine - single shield rock tunnel boring machine." 5 national standards for China's boring machine series of products involved in the term, definition , The basic parameters and models and other technical elements, as well as boring machine product design, manufacture, transportation, disassembly, commissioning and other safety requirements, provides a specification and description.
National Standardization Management Committee, deputy director of Yin Minghan said that the standard committee will be as soon as possible to five national standards translated into foreign language version, the future development of new national standards will also strive to Chinese and foreign language version of the synchronization project, simultaneous preparation, simultaneous release.
This is the first time that China has issued a national standard for full-face tunnel boring machine, which has filled the national standard blank of domestic boring machine industry and has a milestone significance in promoting the implementation of the strategy of building and manufacturing power in China.