JPS5812413B2 - Nanjiyakujibanno Koukashiyorihouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for hardening and solidifying soft ground deposited in rivers, ports, coasts, etc.

Conventionally, plant ships have been equipped with stirring blades to stir the soft ground and hardening agent feeding means to feed hardening agent to the stirring locations.
A hardening treatment for soft ground in which the plant ship is carried into the soft ground and a hardening agent is continuously supplied from the production plant to the stirring zone to form a flat band-shaped hardening treatment zone behind the progress of the plant ship. A method was proposed.

In this case, the plant ship has a wide area because the direction of the extension line to be hardened matches the direction in which the plant ship is traveling, and the hardening width is a fixed width limited by mechanical structure. In order to carry out the hardening treatment, it was necessary to frequently change the course of the plant ship and sequentially arrange strip-shaped hardening treatment zones adjacent to each other to perform the hardening treatment over a desired fixed range.

The present invention is an effective proposal for solving such problems, and its feature is that the hardening process is performed sequentially from the first row, the second row, and the third row in the horizontal direction with respect to the vertical direction on the extension line to be hardened. eye………
As the work progresses, the planar strip-shaped hardening treatment is performed one after another, and the hardening treatment is performed so that the entire body is formed into a planar strip-shaped hardening treatment band extending in the vertical direction.

To this end, it is necessary to develop a new towing device to enable rapid movement of the plant ship itself.

Regarding one embodiment of the method of the present invention, a specific example of hardening the surface layer of soft ground will be described below using FIGS. 1 and 2.

First, traction devices 1a, 1b, 1c, Id, 1e, and 1f are installed and fixed so as to sandwich the soft ground A to be hardened.

Next, the plant ship 2 and the mobile buoy 6 are carried into the ground A.

Next, the cables 12a of the traction devices 1a, 1b, 1c, 1d
, 12b, 12c, and 12d are connected to the plant ship 2, and the cables 12e and 12f of the traction devices 1e and 1f are connected to the mobile buoy 6.

Each traction device 1 is installed and fixed by selecting a vertical and firm place on the ground, but if there is no vertical and firm ground around it, stakes are driven into the ground and a steel plate is passed over the piles to fix the installation. do.

The ply boat 2 has stirring blades 3a, which stir the soft ground.
3b, 3c and a hardening supply stage 4 for supplying a hardening agent for soft ground to the stirring section, and the processing means consisting of these stages is installed so that it can be raised and lowered freely while being guided by a guide column hanging vertically on the plant ship.

The hardening agent supplying means 4 may be of a type that directly supplies the hardening agent to the stirring part with a pipe, but in this embodiment, the stirring blade 3
a, 3b, 3c and stirring blade support shafts 4a, 4b, 4c
A system is adopted in which the blade is made hollow and the curing agent is supplied from the tip of the blade through the hollow part.

The following devices, which have conventionally been loaded on a plant ship, are taken out from the plant ship and loaded onto the mobile buoy 6.

That is, this movable buoy is loaded with an agitator 7 and grout pumps 8a, 8b, 8c, etc. that forcibly feed the curing agent from the agitator to the curing agent supply means, and 9 in the figure indicates the agitator 7 and the grout pumps 8a, 8b, 8c. 10a, 10b, and 10c are pipes that communicate the grout pumps 8a, 8b, and 8c with the curing agent supply means.

In the figure, 15 is a production plant that produces hardening agents. .

The production plant 15 transfers the raw material of the curing agent to the belt conveyor 1.
6, the curing agent is supplied to a slurry mixer 17 for kneading, and further, while being stirred by an agitator 18 to prevent it from solidifying, the curing agent is fed to the agitator 7 of the movable buoy 6 via a pipe 20 by a grout pump 19. be.

In this state, plant ship 2, mobile buoy 6, and production plant 1
While operating the various devices in 5, operate each towing device to advance the plant ship and mobile buoy in the direction of the arrow in the figure.

That is, in order to move the plant ship from position g to position h within a certain range in soft ground A, the device 1d should be wound relatively slowly.
Winding the device 1b relatively quickly.

At the same time, device 1a is rewound relatively slowly and device 1c is rewound relatively quickly.

Next, to move the plant ship from position h to position i, device 1c is wound relatively slowly, device 1a is wound relatively quickly, at the same time device 1b is unwinded relatively slowly, and device 1d is wound relatively quickly. return.

This operation is repeated in the horizontal direction with respect to the vertical direction on the extension line to be hardened, and a certain range a of the soft ground is hardened.

Note that the movement of the plant ship may not be made into such a repetitive movement in the diagonal lateral direction, that is, a so-called zigzag movement, but may be made into a repetitive movement in the true lateral direction, that is, a U-shaped crank movement.

If the hardening treatment is performed in this manner, the treatment width can be changed arbitrarily depending on the operation of the traction device, so it is advantageous in that it can be made to a desired treatment width.

After treating a certain range a of soft ground, the traction devices 1a and 1b of the plant ship are sequentially moved to positions corresponding to certain ranges b and c of soft ground to sequentially harden the ranges b and c.

The towing devices 1e and 1f of the mobile buoy 6 are moved in the same direction as the towing device of the plant ship is moved.

The movable buoy's towing device may be moved every time the plant ship's towing device is moved, but in this embodiment, the pipe 1 connecting the agitator 7 and the curing agent supply means 4 is moved.
Since there is enough length for 0a, 10b, and 10c, every time you move the plant ship's towing device several times, move the moving buoy's towing device by the same distance as the moving distance of the plant ship's towing device. Eggplant.

For example, until the traction devices 1a, 1b, 1c, and 1d are installed from the position corresponding to range a to the position corresponding to range C, the traction devices 1e and 1f remain at the same position, and then the traction devices 1a, When moving the traction devices 1b, 1c, and 1d to positions corresponding to the range d, the traction devices 1e and if are moved in the same direction by the moving distance of the traction devices 1a, 1bylc, and ld.

According to the above explanation, the agitator means for stirring the hardening agent is separate from the plant ship, and as the plant ship moves, the agitator means is also moved to follow the movement of the plant ship. Compared to conventional pipes, the length of pipes for the plant can be made longer, expanding the movement range of the plant ship.

Therefore, it is possible to harden a wider range of soft ground than with conventional methods, the weight of the plant ship is reduced, so the plant ship can be moved quickly, the time required for hardening soft ground can be shortened, and The hardening agent is not stored directly on the ship, but is stored in the agitator of a mobile buoy, and from there the desired amount of hardening agent is delivered to the plant ship. The plant ship can always move in a stable equilibrium without the center of gravity shifting due to an increase or decrease in the amount of curing agent stored, which has an extremely large practical effect.

In this embodiment, the traction device itself was moved directly to treat a wide range of soft ground, but instead of performing such an operation, the rope of the traction device was relayed by a pulley, and the position of the pulley was changed as appropriate. The plant ship may also be moved over a wide range.

FIG. 3 is a schematic representation of the hardening process shown in FIG. 1, and even soft ground existing at the bottom of the water can be hardened.

This involves operating the plant vessel in the lateral direction of the length of the line to be cured (in the direction of the arrow in the figure).

If we perform the zigzag interlocking motion that moves the plant ship forward while repeating horizontal movements in this way, the flat rectangular hardening treatments A, 口, C, etc. will overlap in a polygonal line and form a strip. A hardening treatment zone a is constructed.

While making these belt-shaped hardening treatment bands adjacent to each other, sequentially b,
By repeating the process of lining up the soft ground A, a desired fixed range of the soft ground A can be hardened.

In this embodiment, if a device having a structure in which the stirring blades can move in the width direction of the plant ship is used, it goes without saying that the zigzag movement of the plant ship itself becomes unnecessary.

The plant ship described above is a hardening treatment equipment that moves and is equipped with equipment for hardening soft ground.
Although it is mainly formed into a boat shape using floats, it is not limited to the boat shape of this embodiment, and may be formed by rotating wheels, and also has a function as a base on which various operations for this purpose can be performed. It refers to.

In addition, the traction devices may be installed so that the conveyance means of the hardening treatment equipment can move freely in the desired direction, and they may be installed at five locations including the main traction device, or they may be installed in a tower on a plant ship. You are free to post it.

[Brief explanation of drawings]

1 shows an embodiment of the invention, FIG. 1 is a plan view showing a specific example, FIG. 2 is an explanatory diagram of a plant ship, and FIG. 3 is a schematic diagram showing the concept of the invention. It is. 1a, 1b, 1c, 1d, 1e, 1f... Traction device, 2
...Plant ship, 3a, 3b, 3c...Stirring blade, 6...
...Moving buoy, 7...Agitator.

Claims (1)

[Claims] 1. A conveying means equipped with a processing means for directly hardening the hardening agent by stirring it with the surrounding soft soil while supplying the hardening agent to the stirring zone of the stirring blade in the soft soil layer, unwinding the rope of the traction device, Movement in a desired direction is performed by rope operations such as winding and stopping, and when the conveyance means is moved by the rope operations, the direction of movement in the lateral direction with respect to the vertical direction of the extension line to be cured is The first row is made into a planar rectangular shape and subjected to preliminary curing treatment, then the second row is similarly made into a rectangular shape and subjected to subsequent curing treatment, and this process is repeated for the third and fourth columns. Forming a planar hardening treatment zone extending in the longitudinal direction by repeating the steps sequentially,
Alternatively, a method for hardening soft ground in which a desired fixed range of hardening treatment is performed by repeatedly arranging the planar hardening treatment zones adjacent to each other.