On December 17, 2019, with the approval of the central military commission, China's first domestically built aircraft carrier was named {ldquo; shandong warship of PLA navy ” , delivered to the navy at a military port in sanya, hainan.

& other; China's first indigenous vessel ” The news is still encouraging, and the good news comes again today. December 18, by the railway construction heavy industry independent research and development, with “ Underground aircraft carrier ” Two of the reputated boring machines have been tested and rolled off the production line, and will soon begin their overseas service in Peru and India .

China's first export South American open rock tunnel boring machine

(TBM)

Golden flower plate, surrounded by yellow tongue flowers, with the rotation of the knife plate more colorful … & hellip; In the changsha no.2 industrial park of the railway construction heavy industry, an open rock tunneling machine with a sunflower blade was successfully pulled off the production line. Sunflower is the national flower of Peru, this equipment will be used for the construction of the tunnel project of Peru's SAN javan hydropower station, this is the first open type rock tunnel boring machine exported to South America.

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The equipment is about 245 meters long, cutter diameter of 5.83 meters, mechanical, electrical, hydraulic, sensing and information technology at an organic whole, work on tide boots provided immediately cave walls on either side of the fuselage knife thrust plate of broken rock excavation, especially suitable for hydropower station in st gallen tunnel surrounding rock stability is good, high strength, excavating rock environment, high construction speed, high efficiency advantages.

It is understood that combining with the geological environment of the tunnel engineering of the shengjiwang hydropower station in Peru, the equipment has carried out a number of technical innovations. Through designing hydraulic cylinder auxiliary equipment for the cutter head, the lifting torque can reach 2.5 times of the rated torque. At the same time, advanced grouting holes are reserved in the shield to solve the problem of advanced support of small and medium diameter rock tunneling machine. In addition, the cutter disc is designed with the function of driving brake, which reduces the stop time of the cutter disc to a quarter of the original time, which can effectively ensure the safety of personnel.

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The SAN javan hydropower station in Peru is an ldquo; Bb0 ” The representative project in South America is the first power project invested by a Chinese enterprise in Peru. It is the first power project invested by a Chinese enterprise in Peru.

With a total installed capacity of 209.3 megawatts and a designed annual generating capacity of 1.25 billion kilowatt-hours, the station will reduce annual emissions of 338,000 tons of carbon dioxide and a large amount of waste gas, which will greatly promote the optimal allocation of water resources and sustainable economic and social development in South America.

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In August, it teamed up with India's Larsen & Toubro has signed a procurement contract. Through the cooperation between the r&d technical team and the production team of tiejian heavy industry, the production and manufacturing of the shield machine has been completed. On the 16th, the equipment acceptance work began. At the same time, the customer made a field survey on the production capacity and production status of the iron construction heavy industry shield. The customer was impressed by the production capacity of iron construction heavy industry shield. On 18th, the acceptance of the equipment was completed, and the client gave the shield machine a high praise, easy to operate and stable performance.

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According to the schedule, the customer will go to changsha metro for further communication and learn the experience of construction, operation and management of changsha metro.

Bangalore metro project of shield machine by using mud of shield machine, the railway construction heavy industry according to the geological condition of bangalore metro project along the specific design, the knife dish adopted a special process, and also shows the extreme geological conditions of the shield machine operation method, ensure the subway tunnel drivage smoothly. The equipment will be adjusted according to the customer's requirements, then it will be dismantled and shipped to India. The rollout marks a move by the company into the metro market in South Asia.