小直径长距离过江盾构机的关键技术

The Key Technologies of Small Diameter and Long Distance Shield Machine for River Crossing

根据崇明天然气隧道北港过江工程的地质及水文地质条件,针对本工程超长距离、高水压、小直径的特点,对盾构机刀盘刀具、主驱动、主轴密封、盾尾密封、管片储运系统等进行了详细的研究,提出了适合小直径长距离盾构机的关键技术,对今后类似工程具有指导意义。

According to the geological and hydrogeological conditions of the Beigang River Crossing Project of Chongyang Natural Gas Tunnel, and in view of the characteristics of ultra-long distance, high water pressure and small diameter of the project, the cutter head, main drive, main shaft seal, shield tail seal and segment storage and transportation system of the shield machine are studied in detail, and the suitable small diameter is put forward. The key technology of long-distance shield machine has guiding significance for similar projects in the future.