Ships – Scows – Dumping and unloading
Patent
1988-06-27
1989-11-07
Reese, Randolph A.
Ships
Scows
Dumping and unloading
114 28, 114 29, 114 30, 114 32, 405 17, 405223, H63B 3530
Patent
active
048784460
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a method for the forming and the deposition in a selected place of a bulk consisting substantially of loose or lightly cohesive material, such as sand or other ground material, for example for use as the core or base of a dam, a quay, a bank reinforcement, a jetty or a breakwater, for filling holes or trenches in the bed of a waterway, or for the packaging and storage of contaminated material.
A method of the kind is known in various embodiments.
The invention has for its purpose to carry out a method of the said type in such manner that it can be performed very inexpensively and quickly, while nonetheless ensuring an excellent durability of the formed bulk, both in the short and the long term. This purpose is achieved according to the invention through a method of the kind stated in the heading, which is characterized in that sheet until the tank is filled to a desired depth, after which the pouring is stopped, instance by sewing, such that a substantially closed bag is formed enveloping the poured material, at the chosen place.
A simple method according this type has the characteristic that positions, namely a closed and an open position, sheet until the tank is filled to the desired depth. example by sewing, such that a substantially closed bag is formed enveloping the poured material, bag containing the poured material is deposited at the chosen place.
In order to ensure that the risk of damage such as tearing as the result of impact stress on a filled bag is as far as possible prevented, that embodiment according to which the bag filled with poured material is gradually lowered into the chosen place is preferred.
This can be realized, for example, by a method showing the special feature that the tank, after it has been positioned above the chosen place, is made to settle into or to a small height above that place, and filled with poured material is deposited at the chosen place.
As an alternative, that method can serve according which the tank, after it has been positioned above the chosen place, is made to settle into or to a small height above that place, and is then made to tilt so that the bag filled with poured material is deposited into the chosen place.
In these last two mentioned embodiments, a tank is used which can be brought under control of hoisting means up to or nearly up to the chosen place. Once the chosen place has been reached, depositing of the filled bag at the chosen place is performed either by opening of the base or by tilting of the tank.
Another method that can be used has the characteristic that positions, namely a closed and an open position, to a supply roll which can be unwound with a braking force, is laid in the tank, base closed, sheet in the tank, until the tank has been filled up to a desired depth, after which the pouring is stopped, example by sewing, in such manner that a substantially closed bag, enveloping the poured material, is formed, the bag filled with poured material rests upon the supporting member, through which the filled bag descends, and for example by interrupting it.
In this case, one does not cause the entire tank to descend into the chosen place and then cause the bag to be deposited in the intended place, but the tank is opened above the chosen place and the load is allowed to sink gradually. The supple, tensively strong supporting member may be embodied as a large number of tensively strong bands which are connected to the tank at one side and are coupled to a winch shaft on the other side. On the one hand, the winch can serve for winding up the tensively strong member, while on the other hand braking means should be present for the controlled sinking of the load. The end of the tensively strong member remote from the winch shaft can be connected detachably to the other side of the tank, for example by hooks or the like.
In particular, a floatable tank can be used.
In this case the tank can form part of a watergoing vessel. The vessel comprises a tank portion, which comprises two sloping, pivotably mounted flat walls, whi
REFERENCES:
patent: 1495428 (1924-05-01), Neveling
patent: 1786514 (1930-12-01), Bickell
patent: 3456824 (1969-07-01), Smith
Nicolon B.V.
Reese Randolph A.
Ricci John
Snyder John P.
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