deep injection (of wastes)

To ensure the quality of large aperture and deep perfusion stake foundation construction, a series of steps are taken according to the key working procedure or where quality problem may happen incidentally, so as to have good effect.

为了保证大孔径，深灌注桩基础施工的质量，针对关键，易出质量问题的工序，采取了一系列措施，获得了较好的效果。