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.

據(jù)中新網(wǎng)消息，一臺開挖直徑達11.93米的敞開式巖石隧道掘進機22日在中國中部湖南省長沙市的一家工廠下線,，是迄今中國最大直徑的敞開式巖石隧道掘進機,。

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.

這臺掘進機取名為“江漢新石器號”，整機長約175米,，總重約3000噸,，設計最小轉彎半徑800米，適應最大坡度10%,，由中國鐵建重工集團,、中國水利水電第六工程局聯(lián)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.

它是引江補漢工程中將要部署的10臺掘進機之一,，該工程是南水北調“四橫三縱”工程體系的重要組成部分,。該工程沿線地質條件復雜，具有埋深大,、線路長,、洞徑大、斷層多等特點,，也面臨著強巖爆,、有毒有害氣體等多重施工挑戰(zhàn)。

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.

針對項目施工風險和難點,，研制團隊有效提高了該掘進機針對不良地質的適應能力,，降低施工勞動強度，并通過配置智能掘進系統(tǒng),、圍巖信息采集,、超前探測系統(tǒng)等多項技術讓其更加智能化,。