| 摘要 |
The method involves forming a hole in an upper wall (3) of an alveolate flagstone (1). A tubular sleeve (11) is inserted through the hole and toward a lower wall. A lower end of the sleeve is depressed in part of thickness of the lower wall of the alveolate flagstone, by applying percussions to the sleeve. Vibrations are applied to a vibrating sealing head (13) on level of an upper face of the upper wall around the hole so as to tighten the flagstone around the sleeve by thixotropic effect to seal the sleeve with the upper wall. |
