JP3661716B2 - Solidifying material supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a solidifying material supply device used for surface ground improvement work in which a soft ground is hardened using a solidifying material.
[0002]
[Prior art]
When constructing a structure on the ground, when the ground is soft and cannot support the structure, a construction is performed in which the solidified material is mixed with the soft ground and the ground is accumulated.
When the ground depth to be solidified is shallower than about 2 m, it is generally called surface layer improvement work.
The conventional solidification material supply method in this surface ground improvement work will be described.
Solidifying material placed on the transport vehicle such as a truck is placed in a bag called a flexible spraying container for about capacity 1 m ³ made of chemical fibers or the like (hereinafter referred to as FIBC) with solidifying material manufacturing plant, transport vehicles It is transported to the vicinity of the ground improvement construction site where it can be entered.
The flexible container-containing solidified material transported to the vicinity of the ground improvement construction site is unloaded from the transporting vehicle by a backhoe or the like, and subsequently transported to the ground improvement construction site by a backhoe or the like and dispersed on the soft ground and mixed with the soil.
[0003]
By the way, when the solidifying material is dispersed and mixed with the soil, the fine powder of the solidifying material rises into the atmosphere as dust, adheres to animals and plants and buildings, reacts with water and hardens, and adversely affects the surrounding environment.
Therefore, in recent years, the use of a dust-suppressing type solidifying material, so-called dust-proof type solidifying material, capable of suppressing dust, has been studied as a solidifying material supply method.
This dust-proof type solidifying material is one in which liquid is added to the solidifying material to wet the solidifying material, special fibers are mixed into the solidifying material and the solidifying material particles are entangled, and a binder is added to the solidifying material and pressure is applied to the baby The wet solidified material that is moistened by adding water to cement solidified material is cheap, easy to use, safe to handle, and there is no concern about contamination of groundwater. The adoption is also being considered.
[0004]
However, the wet-solidified material moistened with water by adding cement to the cement solidifies when the cement reacts with water, so that the effect as the solidified material is lost in about 5 hours.
That is, there is a restriction that the wet-solidified material must be spread and mixed with the soil at the ground improvement construction site within 5 hours after production.
On the other hand, in the conventional solidification material supply method, the produced wet solidification material is transported from the factory to the ground improvement site, and then spread to the ground improvement site by a backhoe and mixed with the soil. Therefore, it takes about 15 hours from the production of the wet solidified material to the mixing with the soil.
Therefore, the wet solidified material which has only 5 hours of effect as the solidified material cannot be used in the conventional solidified material supply method in the surface ground improvement work.
Therefore, in order to be able to use the wet-solidified material for the surface ground improvement work, the time required from the production of the wet-solidified material to the application to the ground improvement site and mixing with the soil is less than 5 hours. There is a need for a solidifying material supply device that enables a solidifying material supply method that can be completed.
[0005]
[Problems to be solved by the invention]
In the present invention, the surface ground improvement work is performed using the wet solidification material, but the wet solidification material can be manufactured in the vicinity of the ground improvement work site and the wet solidification material is supplied to the flexible container in a short time. It is an object of the present invention to provide a mobile solidifying material supply device that can be used.
[0006]
[Means for Solving the Problems]
The present invention is a solidification material supply device in which a solidification material production device comprising a solidification material production machine and a solidification material supply machine is loaded on a transport vehicle, and the solidification material supply machine is from a mixer of the solidification material production machine. The present invention relates to a solidifying material supply device comprising a supply device for supplying the wet solidified material carried out to a spraying container . Then, the solidifying material manufacturing machine mixes the solidified material tank, the water tank, and the solidified material cement sent from the solidified material extracting portion and the water from the water tank with the solidified material extracting portion attached to the lower portion. The present invention relates to a solidifying material supply apparatus for producing a wet solidifying material. Further, the solidifying material extraction unit has a screw conveyor of a screw mechanism, and a rotation shaft of the screw conveyor relates to a solidifying material supply device communicating with the mixer.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the solidification material supply device will be described in detail with reference to the drawings showing an embodiment of the present invention.
FIG. 1 is a schematic configuration diagram of a solidifying material supply apparatus of the present invention.
[0008]
In FIG. 1, a solidifying material manufacturing machine 2 is loaded at the rear part and a solidifying material supply machine 3 is loaded at the front part of the loading platform of a transport vehicle such as a truck 1.
The solidified material tank 4 that forms the main part of the solidified material manufacturing machine 2 is provided with a solidified material extraction portion 5 having a screw conveyor 5A of a screw mechanism at the lower portion, and the volume of the solidified material tank 4 at the upper portion. A water tank 6 of about 1/10 is attached.
In addition, a mixer 7 to which a stirring blade 18 is attached is attached to the solidifying material tank 4 on the extension of the rotating shaft of the screw conveyor 5A of the solidifying material extracting portion 5.
Further, a water supply pipe 8 from a water tank 6 attached to the upper part of the solidifying material tank 4 is connected to the mixer 7, and a water amount adjusting valve 9 is attached to the water supply pipe 8 in the middle. Yes.
A solidification material supply port 10 is attached to the rear wall surface of the solidification material tank 4, and a bag filter 11 is attached to the upper wall surface.
[0009]
Next, a feeder 14 which is a main part of the solidified material feeding machine 3 in which the hopper 12 and the shunt 13 are integrated is fixed to the loading platform of the truck 1 by a gantry not shown.
A belt conveyor 15 is bridged between the hopper 12 of the feeder 14 and the carry-out port 7A of the mixer 7 of the solidifying material manufacturing machine 2.
A hook 17 is attached to the shunt 13 so that the flexible container 16 of the spraying container is suspended.
Furthermore, an opening / closing valve (not shown) is built in the shunt 13. The power source of the driving equipment such as the screw conveyor 5A and the belt conveyor 15 described above is supplied from the engine of the truck 1.
[0010]
In the solidification material supply apparatus configured as described above, the usage of this apparatus will be described.
First, in the solidifying material manufacturing plant, the cement powder is pneumatically fed from the solidifying material supply port 10 into the solidifying material tank 4 with the bag filter 11 for preventing dust generation, and the water is filled in the water tank 6.
Then, the truck 1 loaded with the solidified material manufacturing apparatus composed of the solidified material manufacturing machine 2 and the solidified material supply machine 3 is carried as close as possible to the ground improvement construction site and near the ground improvement construction site where the truck 1 can enter.
In the vicinity of the ground improvement construction site, the cement powder in the solidified material tank 4 is conveyed into the mixer 7 communicated with the screw rotation shaft by the operation of the screw conveyor 5A of the solidified material extraction portion 5, and the water tank 6 The water inside is also introduced into the mixer 7 through the water supply pipe 8. At this time, the amount of water flowing into the mixer 7 is adjusted to 5 to 7% by weight of the cement powder by the water amount adjusting valve 9.
The wet solidified material composed of the cement powder and water mixed by the mixer 7 is carried out from the carry-out port 7A of the mixer 7 and put into the hopper 12 of the feeder 14 by the belt conveyor 15.
Next, the wet solidified material of the feeder 14 passes through the open / close valve opened in the shunt 13 and fills the flexible container 16 of the spraying container suspended from the hook 17 from the outlet of the shout 13. Is done.
The wet solidified material filled in the flexible container 16 is transported to a nearby ground improvement construction site by a backhoe or the like and dispersed and mixed with soil.
[0011]
As described above, when the solidifying material supply apparatus of the present invention is used, the wet solidified material can be manufactured and filled in the flexible container 16 within 0.5 hours. In addition, since the truck 1 is parked in the vicinity of the ground improvement construction site, the wet solidification material filled in the flexible container 16 is sprayed on the ground improvement construction site and mixed with the soil within 1 hour at the longest. it can.
Therefore, the constraint condition that the effective effect time as the solidifying material of the wet solidifying material in which the cement reacts with water is sufficiently satisfied is 5 hours or less.
[0012]
【The invention's effect】
As described above, the solidification material supply apparatus according to the present invention includes a solidification material tank, a water tank, a mixer for mixing the solidification material and water, and a supply device for supplying the wet solidification material discharged from the mixer. Since a series of solidification material manufacturing apparatuses consisting of the above are loaded on a transport vehicle, a wet solidification material can be manufactured in the vicinity of the ground improvement construction site.
Therefore, the work from the production of the wet-solidifying material to the mixing with the soil can be performed in a short time, and the effect of the wet-solidifying material as the solidifying material can be sufficiently exhibited.
Therefore, a wet and solidified material composed of cement and water, which is inexpensive, easy to use, safe to handle, has no fear of groundwater contamination, and has a high dustproof effect, can be used for surface ground improvement work.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a solidifying material supply apparatus of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Truck 2 Solidification material manufacturing machine 3 Solidification material supply machine 4 Solidification material tank 5 Solidification material extraction part 5A Screw conveyor 6 Water tank 7 Mixer 8 Water supply pipe 9 Water quantity adjustment valve 10 Solidification material supply port 11 Bag filter 12 Hopper 13 Shoe 14 Feeder 15 Belt conveyor 16 Flexible container 17 Hook 18 Stirring blade

Claims (3)

A solidifying material supply apparatus in which a solidifying material manufacturing apparatus comprising a solidifying material manufacturing machine and a solidifying material supply machine is loaded on a transport vehicle ,
The solidifying material supply machine comprises a supplying device for supplying wet solidified material carried from a mixer of the solidifying material manufacturing machine to a spraying container. The solidification material manufacturing machine is a solidification material tank having a solidification material extraction part attached to the lower part, a water tank, and the solidification material cement sent from the solidification material extraction part and water from the water tank are mixed to wet solidification. The solidifying material supply apparatus according to claim 1, comprising a mixer for manufacturing the material. The solidification material supply device according to claim 1 or 2, wherein the solidification material extraction unit includes a screw conveyor of a screw mechanism, and a rotation shaft of the screw conveyor communicates with the mixer.

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