| 摘要 |
The device has a central cylindrical barrel limited at an end by a closed base and at another end by an opening (3) at the level of which the barrel is connected to stabilization floats (10-15) and cylindrical ballast (20). The ballast is housed in the barrel whose weight is related to the buoyancy of the device in a liquid concrete bath (B). Each float is formed by an open cup in same direction of the opening and connected to the barrel by arms (4-8) in form of caisson that is opened towards top. |
