JPS582293B2 - Hardening treatment method and equipment for soft ground - Google Patents

Description

Detailed Description of the Invention The present invention is a method for reliably supplying an appropriate amount of hardening agent into soft soil deposited in rivers, ports, coasts, etc., and chemically hardening and solidifying the soft soil. The present invention relates to a hardening treatment method and apparatus.

What is important in supplying the hardening agent into the soft soil is that the hardening agent is reliably and evenly supplied into the soft soil.

By the way, when the curing agent from a curing agent production plant is sent to a long distance using only one pump means and distributed to multiple curing agent supply means to be supplied to each location in the soft soil, one By branching the feed pipe into many branches, connecting a distribution pipe to each branch and connecting a hardening agent supply means to the end of this distribution pipe, the hardening agent can be distributed evenly to various locations in the soft soil. It is like supplying.

If a large number of curing agent supply means are connected to one pump means in this way, capacity imbalances such as slight differences in the amount of curing agent supplied between each curing agent supply means will inevitably occur due to differences in piping resistance during supply. It is inevitable that it will occur.

The present invention was made to solve the above-mentioned problems, and its feature is that the same number of pump means as the distribution pipes are provided in the middle of each distribution pipe, and one pump means is provided for each pipe. It's in what you did.

If a distribution pipe is constructed in which one pump means is provided with one hardening agent supply means in this way, no matter how many distribution pipes there are, the desired amount of hardening agent determined by the capacity of the pump means will always be softened. This allows it to be supplied into the soil.

A specific example in which soft soil is stirred with a stirring blade will be described below with reference to the accompanying drawings.

First, the traction devices 1a, Ib and 1c, ld 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 has stirring blades 3a, 3 for stirring soft soil.
b, 3c, and a hardening agent supply means 4 for supplying a hardening agent to the stirring portion of the stirring blade.

The hardening agent supply means 4 may be of a type that directly supplies the hardening agent to the stirring part using a separately provided pipe, but in this embodiment,
Stirring blades 3a, 3b, 3c and stirring blade support shaft 4
A method is adopted in which each of a, 4b, and 4c is made hollow, and the hollow portions are communicated with each other to supply the curing agent from the ejection port of the blade.

Further, the following devices are loaded on the mobile buoy 6.

This movable buoy is equipped with an agitator 7 and a grout pump 8 that forcibly delivers the curing agent from the agitator to the curing agent supply means.
a, 8b, 8c, etc. are loaded, and in the figure, 9 is a generator that supplies power to the agitator 7 and grout pump 8at8bt8c, and 10a, 10b, and 10c are grout pumps that are branched from the agitator 7 and piped. 8a
, 8b, 8c and a curing agent supply means.

Next, the cables 12a and 12b of the towing device of the plant ship 2 are connected to the plant ship, and the cables 12c of the towing device of the mobile buoy are connected to the plant ship.
Connect s 1 2 d to the mobile buoy.

In the figure, 15 is a production plant that produces a curing agent.

The production plant 15 transfers the curing agent base phase to a belt conveyor 16.
The curing agent is supplied to the slurry mixer 17 and kneaded, and further, while being stirred by the agitator 18 so as not to solidify, the curing agent is sent to the agitator 1 of the movable buoy 6 through the feed pipe 20 by the grout pump 19, and temporarily It is designed to be stored.

In such a state, while operating various devices of the plant ship 2, mobile buoy 6, and production plant 15, each towing device 1a, 1b
are wound around each other, and the plant ship is advanced in the direction of arrow E by being rewound or stopped, and a certain range a of the soft ground A is hardened.

This hardening process is performed while the hardening agent is evenly fed from each of the grout pumps 8a, 8b, and 8c.

Further, as the plant ship moves, the towing devices ic and ld also wind each other, rewind, or stop, and the movable buoy follows this and advances in the direction of arrow P.

When a certain range a of soft ground has been treated, the traction devices ia 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 ld are moved in the same direction as the plant ship traction device moves.

The movable buoy towing device may be moved every time the plant ship towing device is moved, but the distribution pipes 10a and 10 connecting the agitator T and the curing agent supply means 4 may be moved.
Since btlOc has enough length, in this example, every time the plant ship's towing device is moved, the moving buoy's towing device is moved by the same distance as the total distance traveled by the plant ship's towing device. Do what you want.

For example, until the traction devices 1a and lb are installed from the position corresponding to range a to the position corresponding to range C, the traction device 1c
, i d remain fixed at the same position, and then the traction device 1
When moving the traction devices 1a and 1b to the position corresponding to the range d, the traction device 1c is moved by the moving distance m of the traction devices 1a and 1b.
, ld are moved in the same direction.

In this embodiment, a case has been described in which towing devices are installed at two locations to sandwich the plant ship and the mobile buoy so as to sandwich the soft ground, and the plant ship and the mobile buoy are moved straight. By winding, rewinding, or stopping the traction devices provided at three or more locations, a wide range of soft ground can be treated at once without having to frequently change the installation location of the traction devices as in the previous embodiment. You can also do it.

Furthermore, in both this embodiment and the previous embodiment, the traction device itself was moved directly to treat a wide range of soft ground.
Relaying the cable of the traction device with a pulley without performing such an operation,
The plant ship may be moved over a wide range by appropriately changing the position of the pulley.

The plant ship described above is a moving hardening treatment equipment equipped with hardening agent supply means for hardening soft ground, and is mainly formed in the shape of a float. It is not limited to the shape of a ship, it may be based on the rotation of wheels, and it also refers to something that has the function of a base that can perform various operations for this purpose.

As is clear from the above explanation, this proposal not only allows the plant ship to be maneuvered throughout the entire area of soft ground, but also provides pumping means for each distribution pipe so that it can harden evenly into soft soil. It is also an excellent method for supplying drugs.

Furthermore, the ability to adjust the amount of hardening agent fed by the grout pump is extremely effective in allowing soft soil to be hardened to a desired hardening strength.

[Brief explanation of the drawing]

The drawings show aspects of carrying out the invention, and FIG. 1 is a plan view showing a specific embodiment, and FIG. 2 is an explanatory diagram of a plant ship. 1a, 1b, 1c, 1d... Traction device, 2...
... Plant ship, 3a, 3b, 3c... Stirring blade, 4a, 4b, 4c... Curing agent supply means, 6... Mobile buoy, I... ... Agitator, 8a, 8b, 8c... Grout pump, 20
...Feed pipe, 10...Distribution pipe, 15.
...Curing agent production plant.

Claims (1)

[Scope of Claims] 1. A curing agent fed from a feed pipe is divided at a branch part and sent to a plurality of distribution pipes, and the curing agent is supplied to a curing agent supply means connected to an end of the distribution pipe. At the same time, a method for hardening soft soil is provided, in which the same number of pump means as the number of distribution pipes is installed in the middle of each distribution pipe to harden the soft soil. 2. A curing agent production plant, a feed pipe receiving the curing agent supply from this plant, an agidata means for temporarily storing the curing agent from the feed pipe, and a pipe branching from the agidata means. A system for use on soft ground, consisting of a plurality of distribution pipes, and hardening agent supply means connected to the terminal ends of the distribution pipes, and in addition, pump means of the same number as the distribution pipes are installed in the middle of the distribution pipes, one for each. Hardening treatment equipment.