JP2000291053A - Solidification transfer system - Google Patents

Abstract

(57) [Problem] To provide a solidification conveyance system capable of solidifying an object to be conveyed, in particular, excavated earth and sand in an appropriate solidification time according to the operation mode of the excavation system. SOLUTION: A premix conveyor 4 for horizontally transferring excavated earth and sand to which a solidifying agent has been added, and excavated earth and sand conveyed from the premix conveyor 4, and excavation while stirring and mixing the excavated earth and sand with the solidifying agent. A lift mix conveyor 2 having a shaftless ribbon screw for conveying earth and sand and having an inner peripheral surface formed in a regular octagon, and an after mix conveyor 3 for loading the excavated earth and sand mixed and solidified by stirring and mixing on the dump truck 120. Contain and configure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyed object,
The present invention relates to a technique for solidifying and transporting excavated earth and sand.

[0002]

BACKGROUND ART Problems to be solved by the invention
Excavated earth and sand, slurry, etc. are transported to a solidification facility on the ground using pipes and the like.For example, a soil pit is provided on the ground, where a solidifying agent is mixed and solidified, and it is used for a dump truck using a backhoe etc. The loading method requires earth and sand pits and solidification equipment on the ground, and the required area of the shaft site becomes large. In addition, it is necessary to impart a certain degree of fluidity to the conveyed object in order to transport the pipes, thereby causing problems such as an increase in the amount of the solidifying agent and an increase in the solidification time.

[0003] Such problems are mainly caused by
This is because it takes time to solidify the excavated earth and sand, and appropriate solidification has not been performed in accordance with a change in the excavation speed or a change in the operation mode of the excavation system at night or the like when the dump truck cannot be carried out.

Accordingly, the steps from excavation to solidification and removal from the mine are constituted by one transfer path, and before the transfer is completed, that is, excavated soil is transferred to the transfer path according to a change in the operation mode of the excavation system. If it can be solidified before reaching the exit, appropriate excavation will be possible.

[0005] In order to solidify in a short time, in addition to mixing an appropriate solidifying agent into excavated earth and sand, it is necessary to stir and mix the excavated earth and sand to which the solidifying agent is added appropriately to homogenize.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to solidify an object to be transported, in particular, excavated earth and sand in an appropriate solidification time according to an operation mode of a digging system. It is to provide a solidification conveyance system.

[0007]

In order to solve the above-mentioned problems, a solidification transfer system according to the present invention has a conveyor device for transferring an object to which a solidifying agent is added to an upper unloading position. In the system, the conveyor device includes a ribbon screw having a rotating shaft arranged upward, and a ribbon screw for transporting the excavated earth and sand upward by a rotational drive by a driving device, and a transport space for the excavated earth and sand, and rotating the ribbon screw. And a casing that supports as much as possible, wherein the inner peripheral surface of the casing is configured to include a high resistance region that is in contact with the transferred object when the object is transferred on the ribbon screw. .

Preferably, the high-resistance region is formed as a corner.

[0009] Here, solidification means an increase in solidification strength and an improvement in the water-containing state. That is, by adding the solidifying agent to the transported object, the flocculation proceeds, the water-containing state is improved, and the solidification strength is increased.

According to the present invention, the conveyer device conveys the conveyed object in a direction including the vertical component. Therefore, the liquid material that has not been sufficiently solidified remains in the conveyer device and is conveyed with a predetermined solidification strength. Only things can be carried out.

Further, since the inner peripheral surface of the casing of the conveyor device has a corner portion, the resistance of the excavated earth and sand to contact with the inner peripheral surface is smaller than that in the case where the inner peripheral surface is constituted only by a curved surface. And the stirring power is applied accordingly. Thereby, excavated earth and sand can be solidified in a short time. Thereby, even when the transport speed of the transported object is increased, it is possible to appropriately solidify the transported object accordingly.

Here, the transported object is not limited to a solid material such as excavated earth and sand, but may be a liquid material such as muddy water or slurry.

[0013] It is preferable that a drop space for dropping the conveyed object downward is formed by the ribbon screw and the casing. The ribbon screw is a shaftless ribbon screw. Preferably, the falling space is formed on the center side of the ribbon screw.

According to this, even if the transferred object is solidified at the time of transfer, there is no shaft, so that the inside of the casing is hardly closed and good transfer can be performed. Also, for example, in the case of a shaftless case, the center portion becomes hollow, and the unsolidified conveyed object falls from the hollow portion below the conveyor device, compared with the case where there is a shaft at the center portion, and the rotational speed of the ribbon is reduced. Good solidification can be performed even when the value is increased.

[0015] The angle of the corner may be 90 degrees or more.
Preferably, it is formed in the range of 180 degrees.

According to this, the resistance force when the transferred object comes into contact with the inner peripheral surface is appropriate, and the stirring force is applied accordingly.
This makes it possible to realize a solidification conveyance system capable of solidifying the object to be conveyed in a short time, and to perform appropriate solidification even when the conveyance speed is increased.

Preferably, a cross section of the inner peripheral surface of the casing is formed in a polygonal shape, and an outer peripheral portion of the ribbon screw is formed so as to be close to the inner peripheral surface of the casing.

According to this, the conveyed object comes into contact with a plurality of corners during one round of the ribbon screw. By adding the resistance due to the contact, it is possible to realize a solidified transfer system capable of solidifying the transferred object in a short time.

In particular, the polygon is preferably a regular octagon. According to this, the conveyed object comes into contact with the eight corners at an appropriate angle during one round of the ribbon screw, so that the solidification time can be further shortened, and even if the conveying speed is increased, the conveyed object can be properly operated. It can be solidified.

The conveyor device may be formed as a plurality of unitized and interconnected conveyor devices, and the rotational drive speed may be adjusted so that solidification is completed near the unloading position. preferable.

According to this, by adjusting the rotational drive speed, appropriate solidification can be performed according to the transferred object and the excavation speed.

It is preferable that the conveyed object is earth and sand excavated by a shield machine, and the solidifying agent includes gypsum.

According to this, by using gypsum,
The earth and sand excavated by the mud pressure shield machine can be solidified in a short time, and the increase in the hydrogen ion concentration index (pH) of the conveyed object can be suppressed.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments utilizing a solidification transport system according to the present invention will be described in detail below with reference to the drawings, taking a mud pressure shield method for transporting excavated earth and sand as an object to be transported. I do.

(Explanation of the entire solidification transfer system) FIG.
1 is an overall view of a solidification transfer system according to the present embodiment.

The mud pressure shield method employs a shield machine 34
This is a method of constructing the tunnel 36 while excavating the face 46 and transporting the earth and sand excavated by the mud discharging facility 8 to the ground.

Specifically, the shield machine 34 includes a face 46.
A cutter disk 40 for excavating the soil, a partition wall 45 for preventing the excavated earth and sand from entering the tunnel 36, a chamber 44 between the cutter disk 40 and the partition wall 45, and agitating the sediment taken in the chamber 44. It is configured to include a stirrer 41 and a screw conveyor 42 that supplies the excavated earth and sand in the chamber 44 to the sludge discharging facility 8.

The sludge discharging equipment 8 includes a sludge discharging pipe 102 which is a path of the excavated sediment supplied from the screw conveyor 42, and a piston pump 108 provided in the discharging sludge pipe 102 to pressurize the excavated sediment and supply it to the ground. And the piston pump 10
8 includes a damper device 100 for smoothing the pressure of the excavated earth and sand intermittently supplied and a γ-ray density meter 106 for measuring the density of the excavated earth and sand that has passed through the damper device 100.

The excavated earth and sand whose density has been measured is conveyed to the ground by adding a solidifying agent by a conveyor group including a plurality of conveyors.

Here, the conveyor group includes three types of conveyor devices. The first conveyor device is provided horizontally below the shaft 32 in the excavated earth and sand transport path, and
6 is a premix conveyor 4 which carries in the excavated earth and sand conveyed from 6 and adds a solidifying agent from the solidifying agent adding device 150 to the excavated earth and sand at the time of conveyance, and conveys the excavated earth and sand.

The second conveyor device is provided from the lower side to the upper side of the shaft 32 in the conveying path, and carries in the excavated earth and sand conveyed from the premix conveyor 4, and excavates while mixing and mixing the excavated earth and the solidifying agent. It is a lift mix conveyor 2 for transporting earth and sand.

The third conveyor device is provided near the upper part of the shaft 32 in the conveying path, and carries in the excavated earth and sand conveyed from the lift mix conveyor 2, and the outlet is provided in an excavated earth and sand discharge section, for example, a dumping machine. The aftermix conveyor 3 is formed as a position where the modified excavated earth and sand can be loaded on the truck.

Here, the above three types of conveyor devices themselves and their joints are formed airtight,
The entire transport path from the shield machine 34 to the excavated sediment discharge section is formed as a continuous transport path in an airtight state.

Accordingly, the excavated earth and sand excavated from the ground face 46 by the shield machine 34 is transferred to the excavated earth and sand discharge section provided at a predetermined position above the shaft 32.
The inside of the shaft 6 and the shaft 32 are conveyed in a sealed state without contacting the atmosphere.

Next, the operation of each of the above devices will be described.

FIG. 2 is a functional block diagram of the solidification transfer system according to the present embodiment.

First, the excavated earth and sand conveyed from the chamber 44 is pressure-fed through the exhaust pipe 102 by the piston pump 108.

The excavated earth and sand conveyed intermittently by the piston pump 108 is pulsating, and the damper device 100
This smoothes the pumping pressure. The pumping pressure is smoothed and the pumping speed is also substantially constant.

After being smoothed, the density of the excavated earth and sand is measured by the γ-ray densitometer 106. This measurement result is sent to control device 110.

By measuring the density of the excavated earth and sand, an appropriate amount of the solidifying agent can be determined, and by controlling the amount of the solidifying agent, even if the properties of the excavated earth and sand change,
Appropriate solidification can be performed.

The excavated earth and sand after the density measurement is conveyed to the premix conveyor 4, where a solidifying agent is added. The solidifying agent is added from the solidifying agent storage tank 150 to the solidifying agent feeder 152.
This is performed by supplying the solidifying agent to the premix conveyor 4 via the.

Here, the solidifying agent includes gypsum. According to this, the use of gypsum can shorten the solidification time, suppress the increase in the hydrogen ion concentration index (pH) of excavated earth and sand, and minimize the impact on the environment. Furthermore, since the solidifying agent takes in free water contained in the excavated earth and sand, it is apparently improved to a low water content.

However, since the solidifying agent containing gypsum is a powder, it is usually difficult to mix a powdered solidifying agent into excavated earth and sand.

In the present embodiment, the solidifying agent feeder 152
Is formed as a screw-shaped addition means, so that it can be satisfactorily mixed even when a powdered solidifying agent is mixed.

Before mixing the solidifying agent, the damper device 100
By smoothing the pressure of the excavated earth and sand, the excavated earth and sand and the solidifying agent can be uniformly mixed using the premix conveyor 4.

The addition state of the solidifying agent is detected by an addition detecting device 154 provided in the solidifying agent conveying path between the solidifying agent feeder 152 and the premix conveyor 4, and the detection result is sent to the control device 110. Have been. Thereby, the addition state of the solidifying agent can be confirmed, and the addition amount of the solidifying agent can be feedback-controlled.

The excavated earth and sand to which the solidifying agent has been added in the premix conveyor 4 is transported to the lift mix conveyor 2.

The lift mix conveyor 2 is provided from the bottom to the top of the shaft 32, and excavated earth and sand is transported in the vertical direction.

In this transportation, the solidifying agent and the excavated earth and sand are sufficiently stirred and mixed, the water content is improved, the agglomeration proceeds, and the excavated earth and sand starts to solidify. The excavated earth and sand that has been agitated and mixed is transported to the upper part of the shaft 32, solidification is completed in the aftermix conveyor 3, and is discharged to the dump truck 120 from the outlet of the aftermix conveyor 3.

As described above, the transport path for excavated earth and sand is formed as a continuous transport path in an airtight state, and the outlet of the aftermix conveyor 3 is formed as an outlet of the transport path.

According to this, since it is formed as a continuous transport path in an airtight state, it is possible to prevent spillage of earth and sand during transport and to eliminate the need for a storage facility such as a hopper. The area can be reduced.

Further, since no manual operation is required, the transportation can be saved, and the working efficiency and working environment can be improved.

Further, since the excavated earth and sand is formed as a continuous conveying path in an airtight state, the excavated earth and sand can be conveyed to the excavated earth and sand discharging section in a sealed state without contacting the atmosphere.

Next, the lift mix conveyor 2 described above is used.
Will be described in detail.

(Description of Lift Mix Conveyor) FIG. 3
1 is a schematic cross-sectional view of a lift mix conveyor 2 according to the present embodiment, where (A) is a plan cross-sectional view and (B) is a side cross-sectional view.

As shown in FIG. 3A, the casing 21
The inner peripheral surface of 0 is configured to include at least one corner as a high resistance region that is in contact with the excavated earth and sand when it is transported on the ribbon screw 212. In this embodiment,
Since the casing 210 is formed in a regular octagonal shape, it has eight corners.

Here, the corner portion, as shown in FIG. 3A, forms a so-called corner when two straight lines contact each other when viewed from a certain cross section. A predetermined gap is formed between the casing and the casing 210.

According to this, the lift mix conveyor 2
The inner peripheral surface of the casing 210 has a corner portion, as compared with the case where the inner peripheral surface is constituted only by a curved surface.
The resistance when the excavated soil comes into contact with the inner peripheral surface is large, and the stirring force is applied accordingly. As a result, the excavated earth and sand can be solidified in a short time, and even when the excavation speed is increased, the excavated earth and sand can be appropriately solidified accordingly.

As shown in FIG. 3B, the lift mix conveyor 2 includes a shaftless ribbon screw 212 having a rotating shaft directed upward, a casing 210 containing the ribbon screw 212, a ribbon screw 212. And a drive device 214 for rotating the drive 212.

Since the ribbon screw 212 is formed so as to have a certain inclination with respect to a horizontal plane, an external force acts on the transferred object on the ribbon screw 212 in the horizontal and vertical directions as a component force.

Accordingly, the conveyed object is conveyed upward while being in contact with the inner surface of the casing 210 by driving the ribbon screw 212. In this process, a part of the conveyed object is momentarily brought into contact with the corner portion, so that agglomeration is promoted by frictional resistance and the like, and when the required solidification strength is obtained, the conveyed object is conveyed above the lift mix conveyor 2. .

On the other hand, the unsolidified excavated earth and sand of the conveyed material does not have sufficient adhesion and frictional resistance to the inner surface of the ribbon screw 212, so that the horizontal component force acts on the ribbon screw 212. Fall through the fall space which is the center of the.

The unsolidified excavated earth and sand is conveyed upward from below the lift mix conveyor 2 again, and reaches above the lift mix conveyor 2 when a predetermined solidification strength is obtained. Therefore, only the excavated earth and sand having the predetermined solidification strength can be carried out.

Further, since the inner peripheral surface of the casing 210 is formed in a regular octagonal shape, the excavated earth and sand comes into contact with the eight corners during one round of the ribbon screw 212, and By applying the stirring force by the resistance, the excavated earth and sand can be solidified in a short time, and even when the excavation speed is increased, the excavated earth and sand can be appropriately solidified accordingly. .

Here, the corner portion has an angle θ.
Is preferably formed in the range of 90 to 180 degrees. If the angle of the corner is small, that is, if the corner is formed at an acute angle, the gap between the corner and the ribbon screw 212 becomes large, excavated earth and sand falling from the ribbon screw 212 increases, and the transport efficiency is reduced, or In addition, the solidified excavated earth and sand may adhere and block the transport path.

It is sufficient that the inner peripheral surface of the casing 210 has at least one corner, but a polygonal shape having a plurality of corners is preferable, and the shape is not limited to a regular octagon. .

FIG. 4 is a schematic sectional view for explaining excavated earth and sand conveyed by the lift mix conveyor 2 according to the present embodiment. FIG. 5 is a flowchart showing the flow of excavated earth and sand in the lift mix conveyor 2 according to the present embodiment.

Hereinafter, the flow of excavated earth and sand transported from the chamber 44 to the ground will be described.

The excavated earth and sand discharged from the chamber 44 is discharged by a piston pump 108 into a discharge passage 1 serving as a conveying path.
02 is sent to the ground via the ground 02 (step 2).

The pressure of the excavated sediment fed through the drain pipe 102 is smoothed by the damper device 100 provided in the drain pipe 102 (step 4). The pressure is smoothed and the pumping speed becomes almost uniform.

The density of the excavated earth and sand whose pressure has been smoothed is measured by the γ-ray densitometer 106 (step 6).

The excavated earth and sand whose density has been measured is pumped to the premix conveyor 4. Premix conveyor 4
In the solidifying agent storage tank 150, the solidifying agent feeder 15
2 is added to the excavated earth and sand (step 8).

The excavated earth and sand to which the solidifying agent has been added is conveyed horizontally by the premix conveyor 4 and loaded on the lift mix conveyor 2.

FIG. 6 is a schematic sectional view of a joint portion between the premix conveyor 4 and the lift mix conveyor 2 according to the present embodiment.

As shown in FIG. 6, the premix conveyor 4 for performing the above-described stirring and mixing is, like the lift mix conveyor 2, a ribbon screw 412 having one end supported.
And the ribbon screw 412
And a casing 410 that contains the same.

The leading end of the ribbon screw 412 of the premix conveyor 4 is located immediately adjacent to the ribbon screw 21 of the lift mix conveyor 2. Thereby, excavated earth and sand can be loaded well.

The premix conveyor 4 is arranged in the horizontal direction while the lift mix conveyor 2 is arranged in the vertical direction. As described above, the ribbon screw 412 is driven to rotate, thereby generating a vertical and horizontal component force. However, since the casing 410 of the premix conveyor 4 has no corners formed,
The excavated earth and sand in the lift mix conveyor 2 into which the solidifying agent is mixed is conveyed horizontally in an unsolidified state while being stirred and mixed, and is loaded on the lift mix conveyor 2.

The excavated earth and sand loaded on the lift mix conveyor 2 is stirred and mixed by the rotation of the ribbon screw 212 by the motor 214 as a driving means (step 10). The motor 214 is connected to the control device 1
10 controls the ribbon screw 2
Twelve rotation speeds are adjusted.

According to this, by adjusting the rotational driving speed, it is possible to perform appropriate solidification according to the transported object. That is, the rotational drive speed may be increased for an object whose solidification is completed in a short time, and the rotational drive speed may be decreased for an object which takes a long time to complete the solidification. Also,
When the transport amount is large, the rotational drive speed may be increased, and when the transport amount is small, the rotational drive speed may be decreased.

As described above, by adjusting the rotational driving speed, it is possible to appropriately perform the solidification processing according to the excavation situation.

When the ribbon screw 212 rotates, the excavated earth and sand is conveyed to the carry-out port at the end opposite to the end of the motor 214.

As shown in FIG. 1, the end of the lift mix conveyor 2 on the motor 214 side is located downward of the shaft. Therefore, if the motor 214 rotates,
The excavated earth and sand is transported toward the upper part of the shaft (step 12).

The excavated earth and sand having sufficient solidification strength is conveyed on the ribbon screw 212 and loaded on the aftermix conveyor 3 above the shaft 32.

The excavated earth and sand loaded on the aftermix conveyor 3 is further loaded on the dump truck 120 from the outlet of the aftermix conveyor 3 after further increasing the solidification strength (step 16).

The lift mix conveyor 2 is unitized and includes three lift mix conveyors 2-1 to -3 as shown in FIG. By adjusting the number of lift mix conveyors in the unit according to the size and depth of the shaft 32, it is possible to adopt a configuration capable of performing appropriate solidification conveyance.

Further, each lift mix conveyor 2 is connected to a carry-out port above one lift mix conveyor 2 and a carry-in port below another lift mix conveyor 2 so that the excavated earth and sand are mutually sealed in an airtight state. It is configured so that delivery is possible.

On the other hand, the unsolidified excavated earth and sand having insufficient solidification strength falls from above the ribbon screw 212 and is again conveyed upward from the lower ribbon screw 212.

Here, the movement of the excavated earth and sand on the ribbon screw 212 will be described in detail with reference to FIG.

As shown in FIG.
Reference numeral 2 denotes a shaftless ribbon screw 212 that does not include a shaft.

The excavated earth and sand 500 having sufficient solidification strength due to agglomeration due to frictional resistance due to the contact is conveyed to the upper carry-out port while remaining on the ribbon screw 212.

On the other hand, the unsolidified excavated earth 502 has a small adhesive force and a small frictional force when a horizontal component is applied by the rotation of the ribbon screw 212, so that the gap (falling) of the inner peripheral surface of the ribbon screw 212 is small. From the space).

Since the ribbon screw 212 is shaftless as described above, the inside of the casing 210 is less likely to be closed because there is no shaft even if the object to be conveyed solidifies during conveyance, and good conveyance can be performed.

In the case of the shaftless type, a hollow portion is formed in the central portion, and the excavated earth and sand that is insufficiently solidified falls from the hollow portion below the conveyor device, and the ribbon screw 2 is removed.
Even when the rotation speed of 12 is increased, only solidified excavated earth and sand can be carried out.

In addition, excavated earth 504 having insufficient solidification strength may be used.
When the ribbon screw 2 comes in contact with the corner
12 falls downward from the gap between the outer peripheral surface of the casing 12 and the casing 210.

That is, the excavated earth and sand having insufficient solidification strength increases the solidification strength while repeating the upward transport, contact with the corners or the inner peripheral surface that is not the corners, and the solidification strength becomes sufficient. At that point, it is loaded on the next conveyor.

As described above, according to the present embodiment, it becomes possible to solidify excavated earth and sand in a short time. Thereby, even when the excavation speed or the operation mode changes, a solidification transfer system capable of appropriately performing the solidification processing can be realized. In particular, lift mix conveyor 2
Is formed in a regular octagonal shape, whereby the solidification time can be further reduced.

Further, since the solidification can be performed in a short time in this manner, when the operation state of the excavator changes, such as when the amount of excavated soil per unit time increases, or when the excavated Even if it is not possible to carry out from the construction site, the excavated earth and sand can be appropriately solidified in accordance with the given conditions and can be carried out of the mine.

The solidification transfer system according to the present embodiment is not limited to the above-described embodiment, but can be applied to various modifications.

For example, the conveyed object is not limited to excavated earth and sand containing water, but a slurry, a solidifiable liquid or the like can be applied, and these conveyed objects can be solidified in a short time.

Further, as the ribbon screw 212,
Not only those without shafts but also those with shafts are applicable.

Further, in the above-described embodiment, the corner portion is applied as the high resistance region, but various applications are possible as long as the stirring force is added by resistance or friction.

[Brief description of the drawings]

FIG. 1 is an overall view of a solidification transfer system according to an embodiment.

FIG. 2 is a functional block diagram of a solidification transfer system according to the present embodiment.

3A and 3B are schematic cross-sectional views of the lift mix conveyor according to the present embodiment, in which FIG. 3A is a plan cross-sectional view, and FIG.

FIG. 4 is a schematic sectional view for explaining excavated earth and sand conveyed by the lift mix conveyor according to the present embodiment.

FIG. 5 is a flowchart showing a flow of excavated earth and sand in the lift mix conveyor according to the present embodiment.

FIG. 6 is a schematic cross-sectional view of a joint portion between a premix conveyor and a lift mix conveyor according to the present embodiment.

[Explanation of symbols]

 2 Lift Mix Conveyor 3 After Mix Conveyor 4 Premix Conveyor 100 Damper Device 102 Drainage Tube 106 γ-ray Density Meter 108 Piston Pump 110 Control Device 150 Solidifier Storage Tank

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masago Yasumoto 1-7-1 Kyobashi, Chuo-ku, Tokyo Inside Toda Construction Corporation (72) Inventor Konosuke Nakamura 1-7-1 Kyobashi, Chuo-ku, Tokyo No. Toda Construction Corporation (72) Inventor Yoshio Iwai 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Corporation (72) Inventor Toshihiro Okumura 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda (72) Inventor Yasuhiko Asai 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda-ken Incorporated Corporation (72) Inventor Ishiro Saito 1-7-1, Kyobashi, Chuo-ku, Tokyo Toda Ken Co., Ltd. (72) Inventor Satoshi Tabata 1-7-1, Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (72) Inventor Akio Uraya 3-39-1, Hazawa, Nerima-ku, Tokyo San-e Inside Industrial Co., Ltd. (72) Inventor Masaru Yasukochi 3-39-1, Hazawa, Nerima-ku, Tokyo Inside San-A Kogyo Co., Ltd. Noritake Co., Ltd. (72) Inventor Hideki Ishii 3-36 Noritake Shinmachi, Nishi-ku, Nagoya-shi, Aichi F-term in Noritake Co., Ltd. 2D054 AC04 DA05 DA15

Claims (8)

[Claims] 1. A solidifying and conveying system having a conveyor device for conveying an object to which a solidifying agent is added to an upper unloading position, wherein the conveyor device has a rotating shaft arranged upward and a driving device. A ribbon screw that conveys the excavated earth and sand upward by a rotational drive of the casing; and a casing that has a conveyance space for the excavated earth and sand and rotatably supports the ribbon screw. The inner peripheral surface of the casing is A solidified conveying system, wherein the conveyed object is configured to include a high-resistance region that comes into contact when the conveyed object is conveyed on the ribbon screw. 2. The solidification transport system according to claim 1, wherein the high-resistance region is formed as a corner. 3. The solidification conveyance system according to claim 1, wherein the ribbon screw and the casing form a drop space for dropping the object to be conveyed downward. . 4. The solidification transport system according to claim 3, wherein the ribbon screw is a shaftless ribbon screw, and the falling space is formed at a center side of the ribbon screw. 5. The solidification transfer system according to claim 2, wherein the angle of the corner is formed in a range of 90 degrees to 180 degrees. 6. The casing according to claim 1, wherein a cross section of the inner peripheral surface of the casing is formed in a polygonal shape, and an outer peripheral portion of the ribbon screw is close to the inner peripheral surface of the casing. A solidification transport system characterized by being formed. 7. The conveyor according to claim 1, wherein the conveyor is unitized and formed as a plurality of interconnected conveyors, and the solidification is completed in the vicinity of the unloading position. A solidification transfer system wherein the speed of the rotation drive is adjusted. 8. The method according to claim 1, wherein the transported object is earth and sand excavated by a shield machine, and the solidifying agent includes gypsum. Solidification transport system.