On August 23, it was learned from China Railway Rail System Group Co., Ltd.: China Railway and Changsha subway construction units had recently signed a contract for the sale of 6 shield tunneling machines (also known as tunnel boring machines), which will be the construction of Changsha Metro Line 2 The addition of helpers also meant that the history of Hunan's inability to produce integrated systems for the construction of large-scale tunnel construction machinery had ended. At present, the shield machine produced by China Railway Rail Heavy Equipment Co., Ltd. is in short supply. Orders have been dispatched to July next year. The products will cover such markets as Wuhan, Nanchang and Wuxi.
From production to take place less than a year <br> <br> Railway track in September 2008, land in Changsha Economic Development Zone of 210 acres to build a heavy equipment manufacturing projects, in August the following year of the project that is completed up to production, It took only less than one year from taking land to production to create an amazing “speed of China Railwayâ€. The first shield machine successfully went offline on September 25 of that year. At present, China Railway Rail Heavy Equipment Branch has formed a series of three mature products, with the shield machine as the fist product and the concrete machinery as the rotary drilling rig.
“China Railway is a central state-owned enterprise that has settled in Changsha. It took less than one year from the time of construction and production. In addition to its own efforts, the help of the Changsha Economic Development Zone has contributed.†Deputy General Manager, China Railway Rail System Group Co., Ltd. Liu Hua Jun told reporters that the problems in the development of enterprises, through the entire track of the open area, to serve.
It is reported that from January to June this year, China Railway officially signed sales contracts for 11 shield machines and 20 concrete mixing plants, achieving an industrial output value of 730 million yuan, an increase of 92.8% over the same period of last year. It has become an important development industry for Changsha's construction machinery industry. pole.
Shield machine tunneling "The shield machine is a complete set of equipment for large-scale construction machinery, which is characterized by safety, environmental protection and rapidity. Compared with the open excavation method and undercutting method, construction risks and interference to the environment are minimal." Heavy equipment Cheng Yongliang, chief engineer of the company, told reporters that almost all of the construction of urban subways and cross-sea cross-harbour tunnels in China has been carried out by shield construction. The normal speed is more than 10 meters a day. In the future, after the shield machine enters the Changsha Metro Line 2, the tunnel will be able to run after the tunnel has been excavated and shaped and the wall linings have been installed.
Yesterday, the reporter saw in the workshop of China Railway Rail Heavy Equipment Co., Ltd. that a huge object with a length of more than 80 meters and a diameter of more than 6 meters occupied most of the workshop space. A shield machine was like a train.
It is reported that due to the complex geology of Changsha, with rocks, caves and sandstone layers, the shield machine involved in the construction of Changsha Metro Line 2 has been “tailor-made†according to different geological structures, and will be equipped with different functional components and assistance. The system will increase the monitoring frequency, especially during the shield machine crossing the risk point, and the ground will also arrange for 24-hour inspection by dedicated personnel to ensure construction safety.
Autonomous equipment to fill gaps in Hunan <br> <br> It is understood that, by 2005, the shield of multi-sourcing from abroad with manufacturers in Europe, America, Japan and other virtual monopoly of the market. In China, only a few companies in Shenyang, Shanghai, and Sichuan can serve as subcontractors, and their share only accounts for about 12% of the total contract price. “The China Railway is located in Changsha and has successfully launched its own shielded machine with independent intellectual property rights. This has increased the weight of Changsha’s “building industry capital†and has filled the development and manufacturing of integrated equipment for large-scale tunnel construction machinery in Hunan. The blank of technical services.†Jun Jun, president of the China Construction Machinery Industry Association, commented on his visit to the China Railway Development Corporation.
It is reported that the second phase of the heavy equipment manufacturing project invested by China Railways in Changsha Economic Development Zone has been started. The planned total investment is 500 million yuan. The project includes 80,000 square meters of steel structure workshops and 30,000 square meters of research and development centers. Officially put into operation on the month. It is estimated that by 2015, China Railway Orbital Construction Equipment Industry can achieve a total revenue of 10 billion yuan, with a capacity of 30 sets of various shield machines of under 12 meters in diameter and 100 sets of pipe dies.
At present, the Heavy Rail Equipment Group of China Railway Rail System Group has reached cooperation intentions with internationally renowned companies, striving to keep its product development at the international leading level, and gradually develops heavy-duty construction equipment factories into R&D, manufacturing, assembly, experimentation, and idle equipment recycling. , spare parts supply leasing services and other functions in one of the shield industry base.
From production to take place less than a year <br> <br> Railway track in September 2008, land in Changsha Economic Development Zone of 210 acres to build a heavy equipment manufacturing projects, in August the following year of the project that is completed up to production, It took only less than one year from taking land to production to create an amazing “speed of China Railwayâ€. The first shield machine successfully went offline on September 25 of that year. At present, China Railway Rail Heavy Equipment Branch has formed a series of three mature products, with the shield machine as the fist product and the concrete machinery as the rotary drilling rig.
“China Railway is a central state-owned enterprise that has settled in Changsha. It took less than one year from the time of construction and production. In addition to its own efforts, the help of the Changsha Economic Development Zone has contributed.†Deputy General Manager, China Railway Rail System Group Co., Ltd. Liu Hua Jun told reporters that the problems in the development of enterprises, through the entire track of the open area, to serve.
It is reported that from January to June this year, China Railway officially signed sales contracts for 11 shield machines and 20 concrete mixing plants, achieving an industrial output value of 730 million yuan, an increase of 92.8% over the same period of last year. It has become an important development industry for Changsha's construction machinery industry. pole.
Shield machine tunneling "The shield machine is a complete set of equipment for large-scale construction machinery, which is characterized by safety, environmental protection and rapidity. Compared with the open excavation method and undercutting method, construction risks and interference to the environment are minimal." Heavy equipment Cheng Yongliang, chief engineer of the company, told reporters that almost all of the construction of urban subways and cross-sea cross-harbour tunnels in China has been carried out by shield construction. The normal speed is more than 10 meters a day. In the future, after the shield machine enters the Changsha Metro Line 2, the tunnel will be able to run after the tunnel has been excavated and shaped and the wall linings have been installed.
Yesterday, the reporter saw in the workshop of China Railway Rail Heavy Equipment Co., Ltd. that a huge object with a length of more than 80 meters and a diameter of more than 6 meters occupied most of the workshop space. A shield machine was like a train.
It is reported that due to the complex geology of Changsha, with rocks, caves and sandstone layers, the shield machine involved in the construction of Changsha Metro Line 2 has been “tailor-made†according to different geological structures, and will be equipped with different functional components and assistance. The system will increase the monitoring frequency, especially during the shield machine crossing the risk point, and the ground will also arrange for 24-hour inspection by dedicated personnel to ensure construction safety.
Autonomous equipment to fill gaps in Hunan <br> <br> It is understood that, by 2005, the shield of multi-sourcing from abroad with manufacturers in Europe, America, Japan and other virtual monopoly of the market. In China, only a few companies in Shenyang, Shanghai, and Sichuan can serve as subcontractors, and their share only accounts for about 12% of the total contract price. “The China Railway is located in Changsha and has successfully launched its own shielded machine with independent intellectual property rights. This has increased the weight of Changsha’s “building industry capital†and has filled the development and manufacturing of integrated equipment for large-scale tunnel construction machinery in Hunan. The blank of technical services.†Jun Jun, president of the China Construction Machinery Industry Association, commented on his visit to the China Railway Development Corporation.
It is reported that the second phase of the heavy equipment manufacturing project invested by China Railways in Changsha Economic Development Zone has been started. The planned total investment is 500 million yuan. The project includes 80,000 square meters of steel structure workshops and 30,000 square meters of research and development centers. Officially put into operation on the month. It is estimated that by 2015, China Railway Orbital Construction Equipment Industry can achieve a total revenue of 10 billion yuan, with a capacity of 30 sets of various shield machines of under 12 meters in diameter and 100 sets of pipe dies.
At present, the Heavy Rail Equipment Group of China Railway Rail System Group has reached cooperation intentions with internationally renowned companies, striving to keep its product development at the international leading level, and gradually develops heavy-duty construction equipment factories into R&D, manufacturing, assembly, experimentation, and idle equipment recycling. , spare parts supply leasing services and other functions in one of the shield industry base.
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