5月3日，位于江苏南通的中俄东线天然气管道关键控制性工程——长江盾构穿越工程完成管道敷设，主体工程全面完工。

记者来到了江苏海门长江北岸中俄东线长江盾构穿越隧道的起点，它就是从这里穿越长江底部，抵达长江南岸的常熟市。随着三条直径约1.5米的管道铺设完成，这条被誉为“万里长江第一长隧”的管道工程就正式进入了最后的安装调试阶段，今年将提前实现贯通投产。

中俄东线长江盾构穿越工程，隧道水平长度约为10.226公里，管道埋深最深处距离江面超60米，隧道内径达6.8米，是目前世界油气领域单向盾构掘进距离最长、埋深最深、口径最大、施工条件最复杂的油气管道穿江盾构工程。

据介绍，目前在隧道内采用倒“品”字形并行敷设三条直径1422毫米超大口径天然气管道，这是国内首创。经过三年多的建设，工程整体进入了收尾攻坚阶段。

On May 3, the Yangtze River Shield Crossing Project, a key control project of the China-Russia East Route natural gas pipeline in Nantong, Jiangsu province, completed the pipeline laying and the main project was completed.

The reporter came to Jiangsu Haimen Yangtze River north bank China-Russia east line of the Yangtze River shield through the tunnel starting point, it is from here through the bottom of the Yangtze River, to the south bank of the Yangtze River Changshu City. With the completion of the laying of three pipelines with a diameter of about 1.5 meters, the pipeline project known as the "first long tunnel of the Yangtze River" has officially entered the final installation and commissioning stage, and will be put into operation ahead of schedule this year.

The Yangtze River Shield crossing project on the East route of China and Russia has a horizontal length of about 10.226 kilometers, the deepest buried depth of the pipeline is more than 60 meters from the river surface, and the inner diameter of the tunnel is 6.8 meters, which is the longest one-way shield tunneling distance, the deepest buried depth, the largest caliber and the most complicated construction conditions in the oil and gas field in the world.

According to reports, at present, three large-diameter natural gas pipelines with a diameter of 1422 mm are laid in parallel in the tunnel using the inverted "product" shape, which is the first in China. After more than three years of construction, the project as a whole entered the final stage.