JPH0441217B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for reclaiming earth and sand, particularly a large amount of earth and sand.

[Conventional technology]

Conventionally, reclamation of beaches, etc. has been carried out by transporting earth and sand with a barge 1 as shown in Fig. 1, and scooping up this earth and sand 2 with a bucket wheel 3 and discharging it onto the coastline via an arm conveyor 4 and a boom conveyor 5. Machine 6
I am going by.

However, in this conventional reclamation method, the earth and sand are scooped up and discharged from the barge 1 in a straight line, so if there is no barge 1 loaded with earth and sand, the reclamation work cannot be carried out.
When the barge 1 is in the middle of being transported, or until the end of discharging from one barge and the start of the next discharging, the discharging operation of the cargo handling machine is suspended, resulting in low work efficiency. Also, barge 1 can be directly connected to bucket wheel 3.
In order to scoop more water, the shape of the hold of the barge 1 must match the shape of the bucket wheel 3, and since the bucket wheel 3 itself is supported by the barge 1 and runs on the barge, the barge 1 There were problems such as the fact that it had to be special and needed to be built separately.

[Problem that the invention seeks to solve]

In view of the above-mentioned circumstances, the present invention provides a reclamation method that does not require a special barge and can perform reclamation work even without a barge loaded with earth and sand.

[Means to solve the problem]

According to the present invention, earth and sand transported by a barge are dumped onto the water bottom, and the thrown earth and sand is scooped up directly from the water bottom by a bucket wheel and discharged to a required position via a conveyor for reclamation. This enables the reclamation work to be carried out without worrying about the engagement of the reclaimer with the reclaimer vessel, and even with soil containing gravel or gravel, without requiring a special barge and improving work efficiency. It is something that can be done.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, 8 indicates a reclaimer ship, 1 indicates a barge, 9 indicates a reclaimed land, and 10 indicates a coastline.

First, the reclaimer ship 8 will be explained.

An arm 13 with a built-in arm conveyor 4 is provided on the stern side of the floating body 11, and the arm 13 is tiltable.
A bucket wheel 3 is provided at the tip of the bucket wheel 3.
Further, a frame 14 is provided on the stern side of the floating body 11 to straddle the arm 13, and a driver's cab 15 is provided on the frame 14, and a winch 16 provided in the driver's cab 15 is provided.
The bucket wheel 3 is suspended by a rope 17 that is let out. The bucket wheel 3 is for scooping up sediment 2 at the bottom of the water, and a recess is provided on the stern side of the floating body to avoid interference with the arm 13 so that the bucket wheel 3 can scoop up the sediment 2 from the bottom. 18 is provided so that the arm 13 can tilt downward from the horizontal, and the recess 18 can receive the thrust load acting on the bucket wheel 3.

In addition, a boom 12 with a built-in boom conveyor 5 is installed on the bow side of the floating body 11 so as to be able to raise and lower freely, and a support rope 21 is hung between the boom 12 and a hoisting winch 20 provided on the frame 19. The boom 12 can be raised and lowered by winding and unwinding the boom 21.

Note that 22 is a communication conveyor that communicates between the arm conveyor 4 and the boom conveyor 5 for transporting earth and sand.

The floating body 11 is provided with winches 23 and 24 for horizontal movement.
A total of 4 sets of winches at the bow and stern, and 2 winches for forward and backward movement.
A total of two sets of winches 5 and 26 are installed at the bow and stern, and ropes 27, 28, 29, 30 let out from each winch 23, 24, 25, 26 are moored to a required location such as a quay, and each winch 23, 24 , 25, 26 to keep the ropes 27, 28, 29, 30 under tension, the floating body 11 can be fixed, and by letting out one of the opposing winches and winding the other, it is possible to move forward or backward or horizontally. Become.

Next, regarding the barge 1, its type is not particularly limited, but a bottom-open type is preferable because of its good workability.

In the figure, 31 is a bulldozer, and 32 is a pile of earth and sand that has been removed and piled up.

Hereinafter, the reclamation work by the reclaimer ship 8, barge 1, etc. will be explained.

The barge 1 transports the earth and sand to the vicinity of the reclaimed land 9 and dumps it on the water bottom. When the barge 1 transports and dumps the earth and sand, the earth and sand accumulated on the water bottom are transported to the floating body 11.
The depth of the water is such that it does not touch the bottom of the ship, and the drop positions are evenly distributed so that it is approximately flat.
In addition, the work of transporting and discharging the barge 1 is carried out by the reclaimer ship 8.
is carried out independently of the work of

The arm 13 is tilted below the horizontal, the bucket wheel 3 is rotated, the floating body 11 is moved sideways by winches 23 and 24, and earth and sand 2 at the bottom of the water is scooped up. The scooped up soil is transferred to the arm conveyor 4, and from the arm conveyor 4 to the communication conveyor 22.
The earth and sand are sequentially transferred from the communication conveyor 22 to the boom conveyor 5, and are piled up on the reclaimed land 9 as earth and sand 32. The earth and sand pile 32 is left for a while and water is drained, and when the water is sufficiently drained, the earth and sand pile 32 is cut down by a bulldozer 31, the ground is leveled, and the earth is reclaimed.

Note that the scooping is performed over the entire range dropped by the barge 1 by moving the floating body 11 forward and backward using the winches 25 and 26.

Therefore, if the soil transported from the barge 1 is dropped onto the area where the scooping was performed, the transportation of the soil by the barge 1 and the scooping by the reclaimer boat 8,
The dispensing work and the dispensing work can be performed independently, and it is possible to avoid a situation where one of the works has to be stopped due to the engagement of the two works.

Further, although the above example shows an open-bottom barge, any type of barge may be used as long as it is capable of dropping earth and sand onto the water bottom.

〔Effect of the invention〕

As described above, according to the present invention, the following excellent effects can be exhibited.

(i) Landfill work can be carried out without the need for transporting earth and sand to involve scooping up earth and sand, and work efficiency is improved because work is not interrupted.

(ii) Two or more barges can drop earth and sand at the same time;
Moreover, since the barge can immediately return to the work of transporting earth and sand after being released, the utilization efficiency of the barge is improved.

(iii) Work efficiency is good because there is no need to moor the barge to the reclaimer ship.

(v) Sediment can be scooped up directly from the water bottom by a reclaimer, eliminating the need for a dedicated barge and reducing equipment costs.

(v) Landfill work can be carried out without any problem even if the soil contains gravel or gravel.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional reclamation method, FIG. 2 is an explanatory diagram showing the reclamation method of the present invention, and FIG. 3 is a schematic plan view of a reclaimer ship used in the method. 1 is a barge, 2 is earth and sand, 3 is a bucket wheel, 11 is a floating body, 13 is an arm, and 18 is a recess.

Claims (1)

[Claims] 1 Sediment transported by barge is dropped onto the bottom of the water,
A reclamation method characterized by scooping up the dropped earth and sand directly from the bottom of the water with a bucket wheel and discharging it to a desired position via a conveyor.