JPS5820826A - Under-water rubble charging and leveling work and device therefor - Google Patents

Abstract

PURPOSE:To perform the charging of rubble to a given place as well as the leveling of the rubble automatically without the need for manual labor by providing a leveler whose angle is regulatable is at the tip of a chute pipe inclinable at any angle to the bottom under water. CONSTITUTION:When charging rubble from a gat ship into a rubber supply hopper 3 on the deck of a rubble charging and leveling base ship 1, the rubble is supplied to the bottom under water through a chute pipe 4 hung down by a wire 9 and leveled by a leveler 6. The angle of the chute pipe 4 is adjustable within the range about 35 deg. to about 55 deg. and also its length is adjustable according to the depth of water because of bolt connection. Also, the angle of the blade 14 of the leveler 6 is adjustable to adequate ones by oil-pressure jacks 16.

Description

[Detailed description of the invention] The present invention uses a chute pipe to continuously throw rubble into water, and at the same time, it can be leveled by a leveling device installed at the lower end of the chute pipe. This article relates to the rubble stone loading and leveling method and its equipment.

Conventionally, the method of constructing foundation rubble underwater is to use a stone carrier to survey the depth of the water and drop the rubble into the water, and then use a diver or a leveling machine to level the rubble placed at the bottom of the water. However, as the water gets deeper,
The thrown rubble spreads more and more, and the leveling work requires considerable effort, which naturally increases the amount of rubble thrown in.

Another method used is to install a chute pipe from a rubble transport ship to the leveling surface of the water bottom, and supply the rubble to the leveling surface of the water bottom via the chute pipe, but in this case, the chute pipe is long. If this occurs, the chute pipe may become clogged due to the rubble stones interlocking with each other.

Therefore, in order to solve this problem, we conducted a model experiment and found that the inner diameter of the chute pipe was sufficiently large, approximately 5 times or more the diameter of the rubble grain, and that the chute pipe was rotated at an angle of 45°. If it has a sufficient angle of inclination,
If it is confirmed that the chute pipe does not become clogged as described above, and if a chute pipe that satisfies the above conditions is used, and if the chute pipe and hopper are equipped with a vibrator, it is possible to remove rubble. It has been found that rubble falls more smoothly through the chute pipe.Therefore, the present invention has been developed to smoothly introduce foundation rubble into a predetermined position when constructing underwater civil engineering works such as installing concrete caissons and underwater structures. The purpose of this work is to construct a foundation rubble with a minimum amount of rubble by performing leveling work at the same time, and to provide a method and device for leveling the rubble in water.

That is, the underwater rubble feeding leveling device of the present invention has a holding barge that can move back and forth and left and right, has a hopper for supplying rubble and a vibrator in the upper part, and a leveling device that can adjust the angle in the lower part. and a chute pipe having 11 devices on the material supply side,
It is constructed by being installed so that it can be tilted at any angle with respect to the water.

The present invention will be described in detail below based on the drawings.
As shown in FIG. 2 and FIG. 2, a rubble loading and leveling barge 1, which is a holding barge equipped with an underwater rubble loading and leveling device according to an embodiment of the present invention, has a rubble feeding barge 1 located on its deck. The rubble is fed into the hopper 3 by the Gatsuto ship 2. These eight stones are fed from the hopper 6 at the top of the chute pipe 4 for supplying stones through the chute pipe 4 to the leveling surface of the water bottom. In order to know the storage status of rubble in the pipe 4, for example, if lamp devices for detecting the storage status of rubble are prepared at two locations in the chute pipe 4, the positions thereof can be confirmed. At the same time, by vibrating the chute pipe 4 with a vibrator installed in a suitable individual fan such as the hopper 6 at the upper part of the chute pipe 4 and pulling the swing wire 7, a leveler is installed at the lower part of the chute pipe 4. The device 6 only performs leveling of rubble.

The angle α of the chute pipe 4 can be adjusted within the range of about 35° to about 55°, and the chute pipe 4 can level the water while tilting it at an arbitrary angle, and can also be adjusted depending on the depth of the water. The chute pipe 4 is connected by bolts so that the length of the chute pipe 4 can also be adjusted.

Further, this chute pipe 4 is suspended from a chute shear 8 by a hanging wire 9, and the leveling device 6 is aligned with the rubble leveling surface, and furthermore, a material supply adjustment device t10 is installed at the bottom of the chute pipe 4. Equipped, the supply of rubble can be stopped at any time.

Next, FIG. 3 is an enlarged side view of the main parts of the leveling device 6, and also shows
FIG. 4 is a plan sectional view of the chute pipe 4 seen from the top, in which the lower end 15 of the chute pipe 4 is formed into a rectangular shape, and the blade 14 is formed into a rectangular shape.
Two hydraulic jacks 16 are used to adjust the angle of the blade 14, and the portions 17 and 18 have a pin structure.

The side view in FIG. 5 and the top view in FIG. 6 show other embodiments of the leveling device 6, in which the lower end of the chute pipe 4 is set at a predetermined height. A roller 12 is attached to the lower end of the chute pipe 4 in order to improve leveling accuracy and provide a rolling effect.
A hydraulic jack 11 is used to adjust the angle of the roller 12.
This roller 12 is supported by a pin structure shown at 13 at the lower end of the chute pipe 4.

Although the rollers 12 in the leveling device 6 are applied with a static load, they may be applied with a dynamic load, or may be applied with a combination of a static load and a dynamic load.

In addition, in areas with swells on the sea surface, the chute pipe 4
Since the pitching of the lower end of the floating body is expected to cause severe vertical movement, a floating body may be fixed to the lower end.

Here, the leveling device 6 provided at the lower end of the chute pipe 4 is a hydraulic jack so that the chute pipe 4 can be horizontal or have an appropriate slope, for example, a slope of about 4%, regardless of the inclination angle. 16 or 11. In addition, in order to check the status of the rubble feeding, an acoustic detector or the like is installed on both the left and right sides of the leveling device 6, and the measured values are used to check the leveling of the rubble feeding. It is also possible to display the information on an oscilloscope installed on the bridge of the barge 1.

Therefore, when rubble is thrown into the water from a rubble stone loading and leveling barge equipped with a device to which the underwater rubble stone loading and leveling method of the present invention is applied, the loading position can be controlled at a predetermined height, so that the amount of rubble thrown in can be controlled. Minimizing the additional amount allows for economical rubble work, and its effectiveness increases especially as the water gets deeper.

In addition, the underwater rubble charging and leveling device of the present invention has the advantage that it can be installed not only on a dedicated rubble loading and leveling barge but also on a pump ship, and there is no need to construct a dedicated ship. The present invention is also applicable to the charging and leveling work of materials with small particle sizes such as sand.

[Brief explanation of drawings]

FIG. 1 is a side view of a rubble loading and leveling barge equipped with an underwater rubble loading and leveling device according to an embodiment of the present invention, and FIG.
3 is an enlarged side view of the essential parts of the leveling device in FIG. 1, FIG. 4 is a plan sectional view seen from the top of FIG. FIG. 6 is a side view of the main parts of the apparatus, and FIG. 6 is a plan view of FIG. 5. 1...Rubble stone loading and leveling barge, 3...Popper, 4...
・Chute pipe, 6... leveling device, 1o river material supply adjustment device, 11 river hydraulic jack, 12... roller,
14...Blade, 16...Hydraulic jack. Agent Patent Attorney Shin Ogawa - Patent Attorney Ken Noguchi Patent Attorney Kazuhiko Saishita Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A holding barge that can move back and forth and left and right, / has a hopper for supplying rubble at the top, and a leveling device and a material supply adjustment device that can adjust the angle at the bottom. Underwater rubble feeding is characterized in that a chute pipe is installed so that it can be tilted at an arbitrary angle relative to the water bottom, and rubble is continuously thrown into the water via the chute pipe and at the same time is leveled by a leveling device. Leveling method. 2. A chute pipe, which has a hopper for supplying rubble at the top and a leveling device and material supply adjustment device whose angle can be adjusted at the bottom, is attached to a holding barge that can be moved back and forth and left and right to the bottom of the water. This is an underwater rubble input leveling device that can be installed to tilt at any angle. □