JP2001193385A - Slurry controlling system, method thereof, excavated soil controlling system, and method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slurry controlling system for efficiently controlling slurry in compliance with excavating capacity of a shield machine and treating capacity of a slurry treating facility. SOLUTION: This slurry controlling system is provided with a plurality of slurry treating facilities 10, 20, mud feeding pumps 12, 22 arranged in the respective slurry treating facility for feeding slurry from the respective slurry treating facility to a heading H, a slurry supply amount controller 41 regulating the slurry supply amount from the plurality of mud feeding pumps to a total slurry amount necessary for excavation, mud discharging pumps 15, 25, 35 returning slurry resulting from the excavation to the respective slurry treating facility, and a slurry returning amount controller 42 regulating the returning slurry amount from the mud discharging pumps to an amount matching a residual treatment capacity of the respective slurry treating facilities.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slurry management system and a slurry management method for managing the amount of slurry containing muddy water and excavated earth used in a muddy shield method, and is mainly generated by a mud shield method. The present invention relates to an excavated sediment management system and an excavated sediment management method for managing the amount of excavated sediment carried out.

[0002]

2. Description of the Related Art The muddy shield construction method is a construction method in which muddy water is supplied to the front of a shield machine and the ground is excavated while retaining the rock by pressurizing the muddy water. The mud pressure shield method is a method of excavating the ground while injecting a mud material into the front of the shield machine and increasing the plastic fluidity of the excavated soil to stabilize the face.

[0003] Conventionally, in the muddy shield construction method, the muddy water is supplied to the face by using a single management system composed of one slurry processing facility installed adjacent to the starting shaft. And the processing of slurry containing muddy water and excavated earth and sand (hereinafter referred to as “slurry management”). In this slurry management system, the specific gravity control, viscosity control, sand content control, etc. of the muddy water are performed, and the slurry generated by excavation is returned to the slurry treatment facility (sedimentation) to separate the soil and muddy water. .

The mud-type shield method is a method applied to hard ground such as sand and gravel with a small amount of binder, and most of the excavated sediment is sand or gravel. Since it is mixed and stirred with the mud material, it has a fresh concrete shape. Therefore, the excavated earth and sand is carried out by pumping or the like to an excavated earth and sand discharge facility installed adjacent to the starting shaft, and is treated as industrial waste.

[0005]

However, in recent years, in shield construction in an urban area, a shield excavator has been adapted to high-speed construction and, in addition, the excavation length has been increased, so that a large amount of slurry has been required. It is becoming difficult to secure a sufficient land for installing a slurry treatment facility for managing wastewater in one place and a facility for carrying out excavated earth and sand. In addition, an increase in the number of slurry pumps and the like, an increase in maintenance costs due to wear and the like, a decrease in work efficiency, and the like are problems in equipment. In addition, there are time restrictions on the removal of slurry and excavated earth and sand due to various conditions caused by roadside conditions such as traffic congestion and noise, or logistics conditions such as the loading of various equipment such as segments. This is one of the causes of prolonged construction period and increased construction cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can efficiently perform slurry management and excavation sediment management, as well as the excavating ability of a shield excavator, a slurry treatment facility, and an excavation sediment. It is an object of the present invention to provide a management system and a management method for effectively processing slurry and excavated earth and sand in accordance with the processing capacity of an unloading facility.

[0007]

The present invention according to claim 1 is effective for a muddy shield construction method, and a plurality of slurry for separating muddy water and excavated sediment into the muddy water and the excavated sediment. A slurry treatment facility, a mud supply unit attached to each slurry treatment facility, and a supply amount of the mud from a plurality of the slurry supply units to supply the mud to the face from each of the slurry treatment facilities. Muddy water supply amount control means for adjusting the total amount of muddy water required for excavation, and the slurry generated by excavation,
Slurry returning means for returning to each of the slurry processing facilities, and slurry for adjusting the amount of the slurry returned from the slurry returning means to an amount corresponding to the remaining processing capacity of each of the slurry processing facilities. And a return amount control means.

Therefore, according to the present invention, shield construction can be performed by constructing a small-scale slurry processing facility at a plurality of locations, so that a large-scale site for constructing the slurry processing facility is not required. A slurry processing facility can be efficiently constructed using public land and the like. In addition, since a large amount of muddy water is supplied separately from a small-scale slurry treatment facility without supplying a large amount of muddy water to the face from one slurry treatment facility, there is a time limit due to the import of various equipment used. No, it can send mud. In addition, there is no need to return a large amount of slurry to one slurry processing facility, and it is divided and returned to a small-scale slurry processing facility. And the slurry can be discharged, and the construction period can be shortened. Furthermore, since the amount of sludge discharged and the amount of mud sent to each slurry processing facility can be easily and appropriately controlled, efficient slurry management becomes possible.

Further, even when a part of the slurry processing facility is stopped, the construction can be performed without stopping the entire slurry management system. In addition, 5k
In the case of a long-distance shield exceeding m, the number of slurry pumps and the like can be reduced by moving all or a part of the plant constituting the slurry processing system as it is. Therefore, it is possible to reduce the machine cost including the maintenance cost.

Further, according to the present invention described in claim 2,
By using the slurry management system according to claim 1, the total amount of muddy water required for excavation of the face is supplied to the face from each of the slurry treatment facilities, and the slurry generated from the face, The slurry management method of returning the slurry to each of the slurry processing facilities so as to have an amount corresponding to the remaining processing capacity of the slurry processing facility can be applied.

Further, the present invention according to claim 3 is effective mainly for a mud shield method, and is used for transporting excavated sediment to a plurality of excavated sediment transport facilities and the plurality of excavated sediment transport facilities. Conveying means for excavated sediment connected to the plurality of excavated sediment unloading facilities, measuring means for measuring the amount of excavated sediment conveyed to each excavated sediment unloading facility by the conveying means, and measuring by the measuring means A transported sediment amount control means for adjusting the transported excavated sediment amount to the plurality of excavated sediment transport facilities in accordance with the measured excavated sediment amount. Things. Here, the excavated earth and sand does not only mean the earth and sand generated by excavation of the ground, but also includes the earth and sand mixed with other materials including the mud material etc. .

Therefore, according to the present invention, it is possible to construct a small-scale excavated sediment discharge facility at a plurality of locations and to perform shield work. Therefore, a large-scale site for constructing the excavated sediment discharge facility is required. In addition, it is possible to efficiently construct the excavated sediment transport facility using public land and the like. In addition, it is not necessary to discharge a large amount of excavated sediment to one excavated sediment unloading facility, and it is divided and discharged to small excavated sediment unloading facilities. The excavated earth and sand can be discharged without receiving, and the construction period can be shortened. Furthermore, it is possible to appropriately control the amount of discharge to each excavated soil transport facility in accordance with the processing capacity of each excavated soil transport facility.

According to a fourth aspect of the present invention, by using the excavated sediment management system according to the third aspect, the transported excavated sediment amount is adjusted according to the measured excavated sediment amount. The method for managing excavated earth and sand that is transported to each of the excavated earth and sand discharge facilities becomes applicable.

According to a fifth aspect of the present invention, there is provided the excavated sediment management method according to the fourth aspect, wherein the excavated sediment is transported from the excavated sediment discharge facility to another processing facility by a transport device, and the GPS is used. (Global Positioning S
It is characterized in that the travel position information of the transport device is detected by using position detection means using a satellite, and the operation of the transport device is managed according to the travel position information of the transport device.

Therefore, according to the present invention, using the position detecting means for detecting the traveling position of the transportation device using a GPS satellite, the operation of the transportation device is performed according to the traveling position information of the transportation device. Can be managed. Therefore, traffic pollution can be reduced by dispersing and carrying out the excavated earth and sand, and it becomes possible to carry out the excavated earth and sand more efficiently.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the description of each embodiment, the same components will be denoted by the same reference symbols, without redundant description.

[First Embodiment (The Invention According to Claims 1 and 2)] The first embodiment of the present invention shows a slurry management system and a slurry management method in a muddy water shield construction method. As shown in FIG. 1, in the present embodiment, a tunnel T having a predetermined excavation length is excavated from a start shaft K1 using a shield excavator S. , And a shield excavator S are arranged. In addition, on the ground portion, a slurry processing facility (hereinafter, the former is referred to as a "first slurry processing facility 10", and the latter is referred to as a "second slurry processing facility 20") is provided at a total of two locations near the starting shaft K1 and above the tunnel. Is provided.

Slurry treatment facilities The slurry treatment facilities 10 and 20 are well-known facilities provided with various facilities for separating slurry containing muddy water and excavated sediment into muddy water and excavated sediment. ), Secondary processing equipment, adjustment tank (both not shown)
Etc. are provided. Level meters 11 and 21 for measuring the water level of the primary tanks are attached to the primary tanks (the muddy water tank after passing through a low head screen or the like) in the slurry processing facilities 10 and 20. Muddy water for sending mud to the face H is stored in the adjusting tanks of the slurry processing facilities 10 and 20.
22 (muddy water supply means) is additionally provided.

The water level data of the primary tank measured by the level meters 11 and 21 is converted into the storage amount of the slurry in the primary tank, and is converted into the slurry treatment facilities 10 and 2.
It is grasped as 0 remaining processing capacity. In other words, when the water level data is low, the amount of slurry returned to the primary tank (hereinafter, referred to as “amount of sludge”) is small, so that the residual treatment capacity is large. Since the amount of returned sludge is large, the remaining treatment capacity is small.

○ Slurry pipe and sludge pipe First slurry treatment facility 10 and second slurry treatment facility 2
0 is connected to the merger 31 by the first mud feed pipe 16 and the second mud feed pipe 26, respectively. The merger 31 is connected to the cutting face H via the merged mud feed pipe 36 having the mud feed pump 30. Communicating. Flow meters 13, 23, 33 for measuring the amount of mud feeding are provided in the mud feeding pipes 16, 26, 36, respectively.
Is attached. A pressure gauge 38 for measuring the pressure of the muddy water in the confluent mud pipe 36 is attached to the confluent mud pipe 36. A pressure gauge 39 for measuring the pressure of the muddy water is provided.

Further, the face H is connected to the flow divider 32 by a main discharge pipe 37 for discharging a slurry which is a mixture of muddy water and excavated earth and sand. On the downstream side, the first sludge pipe 17 and the second sludge pipe 27
And is connected to the primary tank of each of the slurry processing facilities 10 and 20. The main drain pipe 37 and each of the drain pipes 17,
27 includes sludge pumps 35, 15, 25 (slurry return means) for pressure-feeding (returning) the slurry,
Flow meters 34, 14, and 24 for measuring the flow rate are provided.

The sludge pump 35 is provided in an appropriate number according to the length and diameter of the pipe. Also,
A part of the first mud feed pipe 16 and the first mud discharge pipe 17 is a starting shaft K1.
The second mud feed pipe 26 and the second mud discharge pipe 27
Are disposed in a communication shaft K2 formed in the tunnel T from the ground.

The muddy water supply amount control device and the slurry return amount control device The muddy water supply amount control device 41 (the muddy water supply amount control device) for adjusting the muddy amount of each of the above-mentioned mud pumps 12, 22, and 30 is provided on the ground portion. Means) and a slurry return amount control device 42 for adjusting the amount of sludge discharged from each of the sludge pumps 15, 25, 35.
Operation control facility 4 including (slurry return amount control means)
0 is provided. The muddy water supply controller 41 calculates the total amount of muddy water required for excavation,
This is a device for adjusting the number of revolutions and the pressure of each of the mud pumps 12, 22 so that the total amount of mud supplied from 2 is the total mud amount.

The slurry return amount control device 42 controls the slurry return amount of each of the sludge pumps 15, 25, 35,
This is an apparatus for adjusting the amount to the amount corresponding to the remaining processing capacity of each of the slurry processing facilities 10 and 20. The muddy water supply amount control device 41 and the slurry return amount control device 42 are respectively provided with flow meters 13, 14, 23, 24, 33, 34, pressure gauges 38,
39 and the amount of sludge Q measured by the level meters 11 and 21
Based on S, QS1, QS2, sludge amount QD, QD1, QD2, pipe pressure, face pressure, and water level of the primary tank, the respective sludge pumps 12, 22, 30 and the sludge pump 15 are obtained by the following method. , 25, and 35 are controlled. FIG.
QS1 is the amount of mud sent from the first mud pipe 16 at the time, QS is the amount of mud sent from the second mud pipe 26, and Q is the amount of mud
S, the amount of slurry in the main drain pipe 37 is QD,
The amount of sludge discharged from the second drain pipe 27 is QD2, and the amount of sludge discharged from the second sludge pipe 27 is QD2.

Control method of mud pump and mud pump (1) Calculate the total mud volume in consideration of the face pressure, excavation speed, mud flow speed, etc. (2) By dividing the amount of sludge QD from the main sludge pipe 37 in accordance with the storage amount (remaining processing capacity) calculated from the water level of the primary tank of each of the slurry processing facilities 10 and 20, The amount of sludge QD in the first sludge pipe 17 and the second sludge pipe 27
1, QD2 is determined. That is, the amount of sludge QD from the main sludge pipe 37 is sent preferentially to the slurry treatment facility having a low water level in the primary tank.
Determine D2. (3) The total mud volume QS (= QS1 + QS2) of the first mud pipe 16 and the second mud pipe 26 is made equal to the total mud volume, and each mud volume and each mud volume satisfy the following formula. like,
Each mud pump 12,22,30 and each mud pump 15,
The number of rotations of 25 and 35 is adjusted to balance the amount of each mud and the amount of mud discharged. QS1: QS2 = QD1: QD2 (4) In order to satisfy all of the above conditions (1) to (3), the mud pumps 12, 22, 30 and the mud pumps 15, 25, 35 are always operated. Control the speed. The flow divider 32 is a pressure vessel, and it is necessary to control the rotation speed of each of the sludge pumps 12, 22, 30 and the sludge pumps 15, 25, 35 so that a negative pressure is not generated inside. is there.
Further, the pressure management of the face H is performed by the muddy water pressure as in the conventional case.

By adopting the above-mentioned slurry management system, it is possible to easily and appropriately control the amount of sludge discharged and the amount of sludge sent to each of the slurry processing facilities 10 and 20, so that efficient slurry management is possible. Becomes possible.

[Second Embodiment (The Invention According to Claims 3 to 5)] A second embodiment of the present invention is an excavated sediment management system and an excavated sediment management method in a mud shield method. As shown in FIG. 2, in the present embodiment,
The tunnel T having a predetermined excavation length is excavated by the shield excavator S from the starting shaft K1. A shield excavator S is disposed in the target ground G so as to face the face H, and the cutting material is supplied to the cutting face H by a cutting material supply device (not shown).
Is supplied to In addition, on the ground portion, excavated sediment transport facilities (hereinafter, referred to as “first excavated sediment transport facility 51”,
"Second excavated sediment transport facility 52" and "third excavated sediment transport facility 53" are provided.

The pump and the switching device The excavated soil containing the mud material generated from the face H is carried out to the excavated sediment carrying-out facilities 51, 52, 53 through the discharge pipes by the pumps 55, 56 (conveying means). It is possible. The discharge pipe includes a main discharge pipe 60 and a first branch discharge pipe 6 connected to each of the excavated earth and sand discharge facilities 51, 52, and 53.
1, a second branch discharge pipe 62 and a third branch discharge pipe 63, and a first discharge pipe 61 and a second branch discharge pipe 62 are provided with a first discharge pipe 61 at a branch portion. Switching device 9
1 is provided. Further, a second switching device 92 is provided between the main discharge pipe 60 and the third branch discharge pipe 63. First branch pipe 61 on the downstream side of the first switching device 91
And the piping between the first switching device 91 and the second switching device 92 are provided with pumps 58 and 59, respectively.

In the first switching device 91, the main discharge pipe 6
The connection between 0 and the first branch discharge pipe 61, the connection between the main discharge pipe 60 and the second branch discharge pipe 62, and the interruption of the main discharge pipe 60 can be switched. In the second switching device 92, the connection between the main discharge pipe 60 and the third branch discharge pipe 63, the cutoff of the third branch discharge pipe 63, and the cutoff of the main discharge pipe 60 can be switched freely. The first branch discharge pipe 61 is disposed in the starting shaft K1, and the second branch discharge pipe 62 and the third branch discharge pipe 63 are connected to the communication shaft K2 formed in the tunnel T from the ground. , K3.

Excavated sediment carrying-out facility etc. Each excavated sediment carrying-out facility 51, 52, 53 has a sediment hopper 71, 72, 73 for transferring excavated sediment to a dump truck 57 (transportation device), and , 7
Load cells 81, 82, 83 attached to
(Measuring means) is provided. This load cell 8
The excavated earth and sand weighed using 1, 82, 83 is transported to another processing facility (not shown) by a dump truck 57 described below as soon as the amount becomes constant.

The operation control facility 65 on the ground receives data on the amount of excavated sediment weighed by the load cells 81, 82, 83, and inputs the data to the switching device 91,
A switching control device 66 (operating sediment amount control means) for operating the 92 and a conveying sediment amount controlling device 67 for adjusting the amount of pumping of the pumps 55 and 56 in accordance with the input data of the measured excavated amount of sediment. (Conveyance sediment amount control means) is provided, and the amount of the conveyed excavated sediment is controlled by the following methods (1) to (3).

The method of controlling the amount of excavated sediment transported (1) The amount of excavated sediment of the excavated soil hoppers 71, 72, and 73 in the excavated earth and sand discharge facilities 51, 52, and 53 is measured by the load cell 8.
Weigh according to 1, 82, 83. (2) The switching control device 66 operates the switching devices 91 and 92 by the switching control device 66 so as to preferentially discharge the excavated sediment to the excavated sediment discharge facility with a small amount of excavated sediment.
1, 62 and 63 are switched. (3) The transport pumps 55, 56, 58, and 59 are operated or stopped or the number of strokes is adjusted by the transported sediment amount control device 67 according to the transport distance to each of the excavated sediment discharge facilities 51, 52, and 53. To control the amount of excavated sediment transported. At this time, the connection time of each of the discharge pipes 60, 61, 62, and 63 is also appropriately controlled according to the measured excavated earth and sand amount.

For example, when the excavated sediment volume of the second excavated sediment transport facility 52 and the third excavated sediment transport facility 53 is large (that is, when the excavated sediment volume is large and the residual treatment capacity is small), the first excavated sediment volume is small. By operating the switching device 91 and the second switching device 92, the first branch discharge pipe 61 communicates with the main discharge pipe 60, and the third branch discharge pipe 63 is shut off, giving priority to the first excavated sediment discharge facility 51. The earth and sand are carried out. that time,
Since the first excavated earth discharging facility 51 is located farthest from the face H, the pumps 55, 56, 58, 59 are operated to increase the number of strokes.

When the amount of excavated sediment in the first excavated sediment discharging facility 51 is large, the first switching device 91 and the second switching device 92 are operated to operate the second excavated sediment discharging facility 52 and the third excavated sediment processing. The earth and sand are carried out to the facility 53 with priority. At this time, the operation or stoppage of the pumps 55, 56, 58, 59 and the increase or decrease of the number of strokes are appropriately adjusted according to the processing capacity of the excavated earth and sand discharge facilities 52, 53.

Thus, each of the load cells 81, 82, 8
According to the amount of excavated earth and sand measured in 3, each switching device 91,
92, and a plurality of excavated earth and sand discharge facilities 51, 52,
53 and the pressure pump 5
It is possible to adjust the amount of excavated earth and sand transported from the excavated earth and sand transport facilities 51, 52, and 53 to adjust the amount of excavated earth and sand transported from the excavated earth and sand transport facilities 51, 52, and 53.
The excavated earth and sand can be optimally managed according to the remaining processing capacity of No. 3.

Further, the operation control facility 65 includes an operation management device 68 for managing the operation of a plurality of dump trucks 57 operating between the excavated earth and sand discharge facilities 51, 52, 53 and other processing facilities. Is provided. The dump truck 57 receives a GP signal from a plurality of GPS satellites (not shown).
It has a position detecting means (not shown) which receives the S signal and obtains the position of the own vehicle using the received signal. The dump truck 57 transmits traveling data (travel position, traveling speed, etc.) of the own vehicle to the operation management device 68 and operates commands (travel route, destination, traveling speed, etc.) from the operation management device 68. ) Has a data communication function for receiving the data.

The operation management device 68 receives a transmission signal from the dump truck 57, and displays a position display device (not shown) for displaying the position of the dump truck 57 in real time. And a communication device for performing data communication.

By using the operation management device 68 and the dump truck 57, the traveling position and traveling speed of the dump truck 57 can be grasped in real time. Therefore, according to the traveling position of the dump truck 57 and the amount of excavated earth and sand carried out, it is possible to increase the number of the dump truck 57 or to travel while avoiding congested places,
Operation management can be performed very efficiently. Also, traffic pollution around the construction site can be reduced.

If the PHS is used for detecting the operation position of the dump truck 57 and communicating with the operation management device 68, the operation management of the dump truck 57 can be performed more easily.

As described above, an example of a preferred embodiment of the present invention has been described. However, the present invention is not limited to this embodiment, and the design of each component may be appropriately changed without departing from the spirit of the present invention. It is possible. In particular, there is no restriction on the number of slurry processing facilities and excavated earth and sand removal facilities. In addition, when setting up the slurry treatment facility and the excavated earth and sand removal facility, it is possible to temporarily divert and use a public land such as a park where each facility is easy to install. Also, if there is a sewer or rainwater pipeline near the shield tunnel to be constructed, use them,
It is also possible to install a mud pipe or a drain pipe.

[0041]

Conventionally, a large-scale slurry processing facility corresponding to the shield diameter had to be constructed at only one place, but according to the present invention, a small-scale slurry processing facility was constructed at a plurality of places. Shield construction can be performed. Therefore, a large-scale site for constructing a slurry treatment facility is not required, and a slurry treatment facility can be efficiently constructed using public land or the like. Further, since the amount of sludge discharged and the amount of mud sent to each slurry processing facility can be easily and appropriately controlled, efficient slurry management can be performed. Note that the same effect as described above can be obtained for an excavated sediment discharge facility for processing excavated sediment.

Further, since the operation can be controlled in accordance with the traveling position information by using position detecting means for detecting the traveling position of the transportation device in real time using a GPS satellite, the traveling of the transportation device can be controlled. The excavated earth and sand can be efficiently carried out according to the position and the amount of excavated earth and sand carried out.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a slurry management system of the present invention.

FIG. 2 is a conceptual diagram showing an excavated earth and sand management system of the present invention.

[Explanation of symbols]

S Shield excavator K1 Starting shaft K2, K3 Communication shaft T Tunnel G Target ground H Face 10 First slurry treatment facility 11,21 Level meter 12,22 Mud pump (mud water supply means) 13,14,23,24, 33, 34 Flowmeter 15, 25, 35 Sludge pump (slurry returning means) 16 First sludge pipe 17 First sludge pipe 20 Second slurry processing facility 26 Second sludge pipe 27 Second sludge pipe 30 Mud pump 31 Combiner 32 Separator 35 Discharge pump 36 Combined mud feed pipe 37 Main mud drain pipe 38,39 Pressure gauge 40 Operation control facility 41 Mud water supply amount control device (mud water supply amount control means) 42 Slurry return amount control device (Slurry return amount control means) QS, QS1, QS2 Sludge amount QD, QD1, QD2 Sludge discharge amount 51 First excavated sediment transport facility 52 Second excavated sediment transport facility 53 Third excavated sediment discharge facility 55, 56, 58, 59 Pumping pump (transportation means) 57 Dump truck (transportation device) 60 Main discharge pipe 61 First branch discharge pipe 62 Second branch discharge pipe 63 Third branch discharge pipe 65 Operation Control facility 66 Switching control device (conveyed sediment amount control means) 67 Conveyed sediment amount control device (conveyed sediment amount control means) 68 Operation management device 71,72,73 Sediment hopper 81,82,83 Load cell (measuring means) 91 1st Switching device 92 Second switching device

Continued on the front page (72) Inventor Toru Fukawa 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. F term in the company (reference) 2D054 AC04 AC05 CA03 DA12 DA35 GA58 GA73 GA81 GA95

Claims (5)

[Claims] 1. A plurality of slurry processing facilities for separating slurry containing muddy water and excavated earth and sand into the muddy water and the excavated earth and sand, and each of the slurry processing facilities for supplying the muddy water to a face from each of the slurry processing facilities. Muddy water supply means attached to the slurry treatment facility, and a muddy water supply amount control means for adjusting the supply amount of the muddy water from the plurality of the muddy water supply means so as to be the total amount of muddy water required for excavation. A slurry return means for returning the slurry generated by the excavation to each of the slurry processing facilities; and a return amount of the slurry from the slurry return means,
A slurry return amount control means for adjusting the amount of slurry returned to the amount corresponding to the remaining processing capacity of each of the slurry processing facilities. 2. Using the slurry management system according to claim 1, supplying the total amount of muddy water necessary for excavating the face from each of the slurry processing facilities to the face, and removing the slurry generated from the face. And returning the slurry to each of the slurry processing facilities in an amount corresponding to the remaining processing capacity of each of the slurry processing facilities. 3. A plurality of excavated sediment unloading facilities, a means for transporting excavated sediment connected to the plurality of excavated sediment unloading facilities for conveying excavated sediment to the plurality of excavated sediment unloading facilities, Means for measuring the amount of excavated sediment conveyed to each excavated sediment unloading facility by means, and according to the measured excavated sediment amount measured by the measuring means, An excavated sediment management system, comprising: a conveyed sediment amount control means for adjusting a conveyed excavated sediment amount. 4. The excavated sediment management system according to claim 3, wherein the transported excavated sediment amount is adjusted according to the measured excavated sediment amount, and the excavated sediment transported to each of the excavated sediment discharge facilities. Excavation sediment management method. 5. The excavated earth and sand is transported from the excavated earth and sand unloading facility to another processing facility by a transport device, and traveling position information of the transport device is detected by using a position detecting means using a GPS satellite, The excavated earth and sand management method according to claim 4, wherein operation of the transport device is managed according to travel position information of the transport device.