JPS6213445B2 - - Google Patents

Description

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

Conventionally used plant ships for hardening treatment equipment for soft ground are equipped with a water wheel on the side of the ship and rotated to propel the plant ship, or are driven by a towing vehicle or a tugboat. Various methods were tried, including towing. However, due to the effects of the viscosity of the soft ground, it was not easy to adjust the speed of the plant ship or change direction, and it was not possible to quickly harden the soft ground.

The first aspect of the present invention is a hardening agent production plant installed in a place with solid ground, a feeding means for delivering the hardening agent produced in the plant to the stirring blades of a plant ship, and a hardening agent production plant installed at a hardening site. A movable plant ship, and a towing device in which one end of each of a plurality of cables is connected to the plant ship, and the other ends of the cables are arranged so as to sandwich or surround the plant ship. This proposal is characterized by a hardening treatment device for soft ground that is constructed with the following features:

This proposal is an excellent one that successfully solves the drawbacks of the conventional devices described above.

The second aspect of the present invention is a hardening agent production plant installed in a place with solid ground, a feeding means for feeding the hardening agent produced in the plant to the stirring blades of the plant ship, and a hardening agent production plant installed at a hardening site. A movable plant ship, and a towing device in which one end of each of a plurality of cables is connected to the plant ship, and the other ends of the cables are arranged so as to sandwich or surround the plant ship. This proposal is characterized by a hardening treatment apparatus for soft ground, which further includes a relay device in which a hardening agent agitator is attached in the middle of the path of the feeding means.

The plant vessel used for these proposals is preferably not equipped with a towing device for the purpose of reducing the weight of the plant vessel itself, and this towing device is used to transport the plant to the hardening treatment site, as will be detailed later. It is separate from the ship, and is arranged so as to sandwich or surround the hardening treatment area, in an effort to reduce the weight of the plant ship. Moreover, the curing agent production plant is not mounted on the plant ship,
The fact that it is a separate structure and is fixed at a specific location makes it even more advantageous to reduce the weight of the plant ship. In this case, in order to prevent the supply from being stopped due to solidification of the curing agent delivered from the production plant, the plant ship is provided with an agitator that stirs the curing agent again. In such equipment, if the delivery means such as a pipe that delivers the curing agent from the production plant to the plant ship is too long, the curing agent will begin to solidify by the time it reaches the agitator and become clogged, preventing the delivery of the curing agent. Because of the risk of stopping, it cannot be used for long periods of time, and therefore there is a limit to the hardening of soft ground over a wide area. Therefore, the agitator means for stirring the hardening agent is installed in the middle of the route of the feeding means such as a pipe, and as the plant ship moves, the agitator means is moved to follow the movement of the plant ship, so that it can spread the soft and Hardening the ground would be effective in reducing the weight of plant ships and lengthening the delivery means.

A specific embodiment of such an apparatus will be described below with reference to FIGS. 1 and 2.

First, the traction devices 1a, 1b and 1c, 1d are installed and fixed so as to sandwich the soft ground A to be hardened. Each traction device is installed and fixed by selecting a solid location on the ground, but if there is no solid ground around it, stakes are driven into the ground and a steel plate is passed over the piles to install and secure it.

Next, the plant ship 2 is carried into the soft ground A.
The plant ship 2 includes stirring blades 3a, 3b, and 3c that stir the soft ground, and a hardening agent supply means 4 that supplies a hardening agent for the soft ground to the stirring portion. The curing agent supply means 4 may be of a type that directly supplies the curing agent to the stirring part using a separately provided pipe, but in this embodiment, the stirring blades 3a, 3b, 3c and the support shafts 4a, 4b, 4c of the stirring blades are used. A system is adopted in which the curing agent is made hollow and the curing agent is supplied through the hollow portion from the jet port of the blade.

The following devices, which were loaded on the plant ship in the above-mentioned embodiment, are taken out from the plant ship and made into a relay device loaded on the mobile buoy 6.
This movable buoy is loaded with the agitator 7 and grout pumps 8a, 8b, 8c, etc., which forcibly feed the curing agent from the agitator to the curing agent supply means. It is a generator that supplies electric power, and 10a, 10b, and 10c are pipes that communicate the grout pumps 8a, 8b, and 8c with the hardening agent supply means.

Next, the ropes 12a, 12 of the towing device of the plant ship 2
b is connected to the plant ship, and the cables 12c and 12d of the towing device of the mobile buoy are connected to the mobile buoy.

In the figure, 15 is a production plant that produces a curing agent. The production plant 15 supplies raw materials for the curing agent to a slurry mixer 17 using a belt conveyor 16 and kneads the materials, and further stirs the raw materials using an agitator 18 so as not to solidify the raw materials, and then supplies the materials to the agitator of the movable buoy 6 via a grout pump 19 through a pipe 20. A curing agent is supplied to 7.

In such a state, while operating the various devices of the plant ship 2, mobile buoy 6, and production plant 15, each pulling device 1a, 1b is reeled in and out of each other, or stopped, and the plant ship is moved in the direction of arrow E. A certain range a of the soft ground A is hardened. As the plant ship moves, the towing devices 1c, 1
The movable buoys also move in the direction of arrow P by winding up, rewinding, or stopping each other.

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 movable buoy traction devices 1c and 1d are moved in the same direction as the plant ship traction device moves.

The movable buoy's towing device may be moved each time the plant ship's towing device is moved, but if the length of the pipes 10a, 10b, and 10c that connect the agitator 7 and the hardening agent supply means 4 is sufficient. In this embodiment, the movable buoy's towing device is moved by a distance equal to the total movement distance of the plant ship's towing device once every several times the plant ship's towing device is moved.

For example, until the traction devices 1a and 1b are installed from the position corresponding to range a to the position corresponding to range c, the traction devices 1c and 1d remain fixed at the same position,
Next, when moving the traction devices 1a, 1b to positions corresponding to the range d, the traction devices 1c, 1d are moved in the same direction by a moving distance m of the traction devices 1a, 1b.

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. The length of the pipe for this purpose can be made longer than that of other embodiments, and the range of movement of the plant ship is expanded. Therefore, it is possible to harden soft ground over a wider range than other embodiments, and since the weight of the plant ship is reduced, the plant ship can be moved quickly, and the time required for hardening soft ground can be shortened.

In the above embodiment, a case was described in which the plant ship and the mobile buoy were towed by installing towing devices at two places each to sandwich them, and making the plant ship and the mobile buoy go straight. By winding up, rewinding, or stopping each traction device, it is possible to treat a wide range of soft ground at once without having to frequently change the installation location of the traction device as in the previous embodiment. You can also do it. That is,
As shown in FIG. 3, the traction devices 1a, 1b, 1c, and 1d are installed and fixed so as to surround the soft ground A. Next, the plant ship 2 is carried into the ground A.
Next, the ropes 12 of the traction devices 1a, 1b, 1c, 1d
a, 12b, 12c, and 12d are connected to the plant ship, and the cables 12e and 12f of the towing devices 1e and 1f are connected to the mobile buoy. In this state, the various devices of the plant ship 2, mobile buoy 6, and production plant 15 are operated. Operate each towing device while moving the plant ship and mobile buoy in the direction of the arrow in the figure. In other words, move towards soft ground A.
To move the plant ship from position g to position h within a certain range, device 1d is wound relatively slowly and device 1b is wound relatively quickly. At the same time, device 1a is rewound relatively slowly and device 1c is rewound relatively quickly. Next, in order to move the plant ship from position h to position i, device 1c is wound relatively slowly, and device 1c is wound relatively slowly.
A is wound relatively quickly, while at the same time device 1b is unwinded relatively slowly and device 1d is unwound relatively quickly.

This operation is repeated to harden a certain area a of the soft ground. If the hardening process is performed in this way, the width of the treatment can be changed arbitrarily depending on the operation of the traction device, so it is possible to achieve the desired treatment width. Excellent in what it can do. The mobile buoy will be moved forward as the plant ship advances.

Next, when it is necessary to harden areas b and c in the ground A, the traction devices 1a, 1b, 1c, 1
d, 1e and 1f are moved to positions corresponding to their respective ranges and processed at the same time as above.

Furthermore, in both this embodiment and the previous 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 with a pulley, and the The plant ship may be moved over a wide range by appropriately changing the position of the pulley. When using such a pulley, the pulling direction of the cable can be freely changed by moving the position of the lightweight pulley itself, without moving the start or end position of the cable, and the weight is substantially reduced. This is advantageous in that it provides the same effect as if the traction device itself was moved directly.

The plant ship described above is a mobile ship equipped with equipment for hardening soft ground, and is mainly formed in the shape of a float boat, but is not limited to the boat shape of this embodiment. This refers to a device that functions as a base that can be used to perform various operations that are intended for this purpose.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a plan view showing a specific embodiment, FIG. 2 is an explanatory diagram of a plant ship, and FIG. 3 is a plan view showing another embodiment. be. 1a, 1b, 1c, 1d, 1e, 1f... Traction device, 2... Plant ship, 3a, 3b, 3c...
Stirring blade, 6... Moving buoy, 7... Agitator,
12...Cable, 15...Curing agent production plant.

Claims (1)

[Scope of Claims] 1. A hardening agent production plant installed in a solid place on the ground, a feeding means for delivering the hardening agent produced in the plant to the stirring blades of a plant ship, and A movable plant ship, and a towing device in which one end of each of a plurality of cables is connected to the plant ship, and the other ends of the cables are arranged so as to sandwich or surround the plant ship. Soft ground hardening treatment equipment configured with the following equipment. 2. A hardening agent production plant installed on a solid ground, a feeding means for delivering the hardening agent produced at the plant to the stirring blades of the plant ship, and a plant ship that can be moved freely to the hardening treatment location. and a towing device that connects one end of each of a plurality of cables to the plant ship and arranges the other ends of the cables so as to sandwich or surround the plant ship,
A hardening treatment apparatus for soft ground further comprising a relay device in which a hardening agent agitator is attached in the middle of the path of the feeding means. 3. A hardening agent production plant to be installed in a place with solid ground, a feeding means for delivering the hardening agent produced at the plant to the stirring blades of the plant ship, and a plant ship that can be moved freely to the hardening treatment location. and a towing device that connects one end of each of a plurality of cables to the plant ship and arranges the other ends of the cables so as to sandwich or surround the plant ship,
The apparatus for hardening soft ground further comprises a pulley interposed between the cables and the position of the pulley being movable and changeable.