The text expatiates the technology capability and structure characteristic of Italy R622HD turn dig bore and its apply effect, advantage, construction notice and development foreground in working on bridge base slab engineering.

• 主要阐述了意大利R622HD型旋挖钻机的技术性能、结构特点,以及在桥梁基础钻孔桩工程中的应用效果、优越性、施工注意事项及发展前景。