JPS61142230A - Method and apparatus for charging rubbles - Google Patents

Abstract

PURPOSE:To raise the efficiency of charging operation of rubbles by a method in which a rubble-charging port with freely adjustable opening is provided in the lower end of a casing for charging rubbles, and the casing is moved while keeping the opening in an arch-action generating condition. CONSTITUTION:A rubble charging port 9 consisting of a movable partition plate 6 to be opened or closed by a cylinder 5 and a fixed plate 4 to be fixed inside a casing 2 is provided in the lower end of the casing 2 for charging rubbles. When rubbles 8 is packed into the casing 2, the casing 2 is set on a rubble-placing position by a crane ship 1, and the port 9 is adjusted by the cylinder 5 immediately before reaching an opening at which arch-action phenomenon to be determined by the sizes of broken stones 8 could occur. The rubbles 8 are then naturally dropped. At a time when the natural drop of the rubbles 8 is stopped, the opening degree of the port 9 is adjusted to one to cause arch- action phenomenon to take place, and the casing is moved to other places.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method and apparatus for introducing rubble which can be mainly used for adding rubble for book leveling.

[Prior art]

Traditionally, when constructing a structure such as a caisson-type breakwater on the sea, a rubble mound is placed on the seabed and a caisson is installed on top of it. A rubble mound is formed by leveling the mound by adding thinner rubble on top of the mound.

Conventionally, when forming the rubble mound, the rubble is introduced by opening the rubble input port at the bottom of the casing suspended at a predetermined position underwater using a crane ship, etc., and then the casing is placed at the predetermined rubble input position. They are moving and putting in rubble.

However, in order to form a rubble mound of a certain height on an extremely uneven seabed, it is necessary to open and close the rubble input port of the casing arbitrarily. It was difficult to close the input port, and as a result, it was very difficult to maintain the height of the rubble mound at a constant top position, and it was necessary to level the mound again after the rubble was removed.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, the present invention solves the above-mentioned conventional problems and allows the rubble inlet at the lower end of the casing to be opened and closed arbitrarily and easily using the arch action of the rubble. The object of the present invention is to provide a method and device for introducing rubble that can form a rubble mound that does not require leveling work.

[Structure of the invention]

That is, the method of introducing rubble according to the present invention involves adjusting the opening of the rubble input port at the lower end of the casing for inputting rubble to be close to the limit at which the arch action occurs, and then inserting the rubble.
When the required rubble is completed, the above-mentioned opening degree is reduced to the opening degree at which an arch action occurs, and the casing is moved to the next rubble-dropping position, and then the rubble-stone is loaded by repeating the above operation. The rubble feeding device has a rubble feeding opening at the lower end of a rubble feeding casing that can be moved to a required position, and the opening of the rubble feeding opening is set to a point just before the limit at which arch action occurs. A semi-fixed partition plate that can be adjusted is provided, and a movable partition plate is provided below the semi-fixed partition plate that can reduce the opening of the rubble input port to an opening that causes arch action. .

〔Example〕

Embodiments of the rubble feeding method and the rubble feeding device of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view of the rubble feeding device in one embodiment of the present invention, and FIG. FIG. 2 is an enlarged side sectional view of a main part of the rubble input port of the casing shown in FIG. 1;

First, as shown in Fig. 1, a casing 2 for throwing in rubble is lifted up by a crane ship 1, its upper end is exposed above the sea surface, and crushed stones 8 for rubble are thrown into the casing 2 using a grab boat (not shown). However, once the casing 2 is filled with crushed stones 8, it is lifted by a crane ship 1 and set at a predetermined position in the sea.

Next, as shown in FIG. 2, the opening of the rubble stone inlet 9 in the lower part of the casing 2 can be adjusted to just before the limit at which the arch action of the crushed stones 8 occurs. Semi-fixed partition plate 4 operated by cylinder 5
are provided tilting from side to side, and at the bottom of this semi-fixed partition plate 4 is a cylinder 7 that can be operated by a cylinder 7 that can reduce the opening of the rubble input port 9 to the opening that causes the arch action of the crushed stones 8. A movable partition plate 6 is provided.

Therefore, depending on the size of the crushed stone 8, the semi-fixed partition plate 4 is set in advance by moving the cylinder 5 to a position just before the limit at which the arch action phenomenon occurs, and in this state, the uneven seabed ground G Crushed stone 8 is allowed to fall naturally on top.

The fallen crushed stones 8 form a pile, swell up to the rubble input port 9, connect with the crushed stones 8 in the casing 2, and when the crushed stones 8 stop falling naturally, the cylinder 7 of the movable partition plate 6 is operated in the direction of slightly closing it. By doing so, an arch action is generated in the crushed stone 8 at the rubble input port 9.

As a result, even if the casing 2 is lifted by the crane ship 1 in this state, the crushed stones 8 will not naturally fall from the rubble input port 9.

As mentioned above, when the prescribed rubble is finished, the casing 2 is moved to the next rubble input position, and the ruler plate 3 provided at the lower end of the casing 2 is applied to the top T of the completed crushed stone pile, and it is moved there. By opening the partition plate 6, the crushed stones 8 are loaded again, and by repeating the above operations, the rubble loading operation is continued and a continuous rubble mound is formed.

As a result, it is possible to place the crushed stones 8 while keeping the height of the top T constant (related to the irregularity of the uneven seabed ground G), but during this time, the natural fall of the crushed stones 8 is controlled by the phenomenon of arch action. By using this, the opening degree of the rubble input port 9 can be adjusted by simply opening and closing the cylinder 7 of the movable partition plate 6, and the semi-fixed partition plate 4 is first adjusted to the opening degree suitable for the crushed stone 8. Just make the adjustment and no further operation is required.

〔Effect of the invention〕

Therefore, in a device adopting the rubble stone feeding method of the present invention, by slightly closing the movable partition plate of the rubble stone feeding port of the casing, the arch action of the crushed stone is used to prevent the falling of the rubble and the casing is moved to the desired position. The efficiency of the rubble loading work can be improved.

Further, since the operation of closing the rubble input port of the casing is easily performed, a rubble mound of uniform height can be created, and there is no need for leveling work of the rubble after inputting the rubble, which is very economical.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of a dumping device according to an embodiment of the present invention, and FIG. 2 is an enlarged side sectional view of a main part of the rubble input port of the casing shown in FIG. 2...Casing, 4...Semi-fixed partition plate, 5...
Cylinder, 6... Movable partition plate, 7... Cylinder, 8... Crushed stone, 9... Rubble stone input port.

Claims (1)

[Claims] 1. After adjusting the opening of the rubble input port at the lower end of the casing for inputting rubble to just before the limit at which arch action occurs, the rubble is input, and when the required rubble is completed, the above-mentioned A rubble stone loading method in which the opening degree of the casing is reduced to the degree of opening at which arch action occurs, the casing is moved to the next rubble stone loading position, and the above operations are repeated to load the rubble stone. 2. A semi-fixed partition plate is provided at the rubble input port at the lower end of the rubble input casing that can be moved to the required position, and the opening degree of the rubble input port can be adjusted to just before the limit at which arch action occurs. The rubble feeding device is further characterized in that a movable partition plate is provided below the semi-fixed partition plate and is capable of reducing the opening degree of the rubble feeding port to an opening degree at which an arch action occurs.