国产最大直径敞开式岩石隧道掘进机长沙下线

An open-type rock tunnel boring machine with a diameter of 11.93 meters, the largest of its kind in China, just rolled off the production line on Friday in Changsha, Central China's Hunan province, China News Service reported.

据中新网消息，一台开挖直径达11.93米的敞开式岩石隧道掘进机22日在中国中部湖南省长沙市的一家工厂下线，是迄今中国最大直径的敞开式岩石隧道掘进机。

Named Jianghan Xinshiqi, or Jianghan Neolithic, the machine measures approximately 175 meters in length, weighs around 3,000 metric tons and features a design with a minimum turning radius of 800 meters and a maximum gradient of 10 percent. The machine was jointly developed by China Railway Construction Heavy Industry Corp and Sinohydro Bureau 6 Co Ltd.

这台掘进机取名为“江汉新石器号”，整机长约175米，总重约3000吨，设计最小转弯半径800米，适应最大坡度10%，由中国铁建重工集团、中国水利水电第六工程局联合打造。

It is one of the 10 TBMs to be deployed for a project to channel water from the Yangtze River to the Hanjiang River, part of the middle route of the South-to-North Water Diversion Project. This project presents highly complex geological conditions along its route, characterized by great depths, extended length, large tunnel diameters and numerous fault zones. The project faces multiple construction challenges, including rock bursts and gas poisoning.

它是引江补汉工程中将要部署的10台掘进机之一，该工程是南水北调“四横三纵”工程体系的重要组成部分。该工程沿线地质条件复杂，具有埋深大、线路长、洞径大、断层多等特点，也面临着强岩爆、有毒有害气体等多重施工挑战。

Addressing the risks and challenges, the open-type TBM's developing team managed to improve its adaptivity to adverse geological conditions and reduce the need of human labor in its operation. The machine is also more intelligent, equipped with technologies such as smart tunneling system, surrounding rock information gathering and advanced detection.

针对项目施工风险和难点，研制团队有效提高了该掘进机针对不良地质的适应能力，降低施工劳动强度，并通过配置智能掘进系统、围岩信息采集、超前探测系统等多项技术让其更加智能化。