Yangtze River Shield Tunnelling and drilling on th

2022-07-23
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At 10:00 a.m. on May 18, at the site of the China Russia east line Yangtze River Shield Crossing Project of the state management group, the Chinese shield machine "Tongtong" was successfully launched, marking the official excavation and drilling of the China Russia east line Yangtze River Shield Crossing Project. The project is currently the longest one-way shield tunneling distance, the deepest burial depth and the highest water pressure in the world's oil and gas field. At 10 a.m. on May 18, at the site of the China Russia east line Yangtze River Shield Crossing Project of the state management group, the Chinese shield machine "Tongtong" was successfully launched, marking the official excavation and drilling of the China Russia east line Yangtze River Shield Crossing Project. This project is the one-way shield with the longest driving distance, the deepest burial depth, the highest water pressure, the largest diameter and the most complex construction environment in the oil and gas field in the world. In many countries in the world, this device has a sales gas pipeline river crossing shield project

it is understood that the project crosses the Yangtze River in the form of tunnel, with complex construction conditions and great construction difficulties. Therefore, a 50kN electro-hydraulic servo fatigue testing machine was selected for the compression test. In the early stage, the excavation of the shaft on the North Bank of Haimen and the hoisting and installation of the shield machine into the shaft have been completed. This time, the tunneling operation will be started

with a total length of 10.226 km, this tunnel is the shield tunnel with the longest driving distance of one-way shield in the world's oil and gas field but one price per day for raw materials. It is also the first long-distance underwater tunnel with the longest single head driving in China. It belongs to the shield project with the highest water pressure and one of the largest gas transmission pipeline diameter projects in the world

in July, 2020, C919 will realize the target start-up that is 5%~10% lighter than B737 and A320, and the construction will be comprehensively promoted and accelerated in January, 2021. It is expected that the whole line will be completed in 2025. After the completion, the "Russian gas" passing through the three northeast provinces and Beijing Tianjin Hebei region can be smoothly sent to the Yangtze River Delta region, so as to improve the emergency support capacity of natural gas in the Yangtze River Delta region

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