JP3340711B2 - Excavation management system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment construction position useful mainly in a curved portion, and
The present invention relates to a digging management system for managing a digging direction by a shield digging machine.

[0002]

2. Description of the Related Art Conventional techniques for performing excavation management in order to assemble segments along a planning line while excavating with a shield excavator along a planning line based on a construction plan include, for example, As disclosed in Japanese Patent No. 2766553, there is an apparatus for controlling the direction of a shield machine.

[0003]

However, in the above-mentioned prior art, there is a problem that only the direction control of the shield machine is performed and the segment plan cannot be corrected. In addition, since manual operation is not used, there is a problem that know-how based on intuition of an operator cannot be applied to excavation management.

It is an object of the present invention to provide a digging management system capable of suitably constructing a segment ring along a predetermined route.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is, for example, as shown in FIGS. 1 and 2, a shield excavator is used to excavate along a predetermined planning line. In the shield construction method of constructing segment rings along the planning line while performing, it is a digging management system for managing the construction position of the segment ring, and the combination of segments necessary to assemble the segment ring to be constructed but it entered based on the prediction of the operator
If, to calculate the virtual line is a path along the axial direction of the would will segment ring constructed by a combination of segments these input, further, is the input
Segment combination makes virtual line closest to plan line
The above operation was performed to determine whether the combination was
By determining by comparing the virtual line and the planning line ,
It is characterized by including a segment determining means 10 for determining whether the content of the input by the operator of the segment combination is appropriate.

[0006] The control section of the excavation management system has a segment data file for storing information (related to the amount of taper, etc.) of various segments to be used. The segment includes a standard segment and a taper segment. The standard segment is such that both end surfaces of a segment ring (standard ring) obtained by assembling these segments are parallel to each other. In the taper segment, both end surfaces of a segment ring (taper ring) obtained by assembling the taper segments are not parallel to each other. In other words, when the segment rings obtained by the standard segments are connected, the vehicle goes straight, and when the segment rings obtained by the tapered segments are connected, the vehicle curves.
In addition, the degree of the curve is adjusted by the taper amount of the segment.

Further, the control section assembles the segments of the input combination based on the data in the segment data file by inputting a combination of segments necessary for assembling the segment ring to be constructed. A path (trajectory) along the axial direction of the segment ring obtained in step (1), that is, a virtual line is calculated. Then, the control unit compares the virtual line with a predetermined plan line, and determines whether the combination of the segments is appropriate, that is, whether the virtual line is the closest to the plan line. Do. If it is determined by the determination that the combination is not appropriate, the operator again inputs a segment combination that makes the virtual line closer to the plan line, and repeats this input to obtain a valid segment combination. be able to. The determination here is for obtaining a combination of segments such that an imaginary line follows the planning line from the present time. That is, when the excavation route deviates from the plan line, a combination of segments that returns to the plan line can be obtained by the determination.

According to the first aspect of the present invention, a case where a combination of segments necessary for assembling a segment ring to be constructed is input based on an operator's prediction.
To, calculate the virtual line is a path along the axial direction of the would will segment ring constructed by a combination of segments these input, further, is the input-segment
Of the virtual line should be closest to the planning line.
Whether the combination is possible with
By determining by comparing the line with the plan line , the segment
Since there is provided a segment determination means for determining whether the content of the input by the operator of the combination of the segments is appropriate, a proper combination of the segments can be determined by repeating the input of the combination of the segments. Thereby, a segment ring can be suitably constructed along a predetermined planning line. Therefore, mainly
This is useful for selecting an appropriate combination of segments (performing a segment plan) in a curved portion. Also,
Even when the excavation route deviates from the plan line, it is possible to select a combination of segments that returns to the plan line. That is, the segment plan can be corrected.

According to a second aspect of the present invention, in the excavation management system according to the first aspect, the segment determining means 10
Is characterized in that the combination of segments determined by (1) is necessary for constructing a plurality of segment rings.

That is, a virtual line in a state where a plurality of segment rings are connected is calculated, and whether or not this virtual line is closest to the planned line is determined by the segment determining means.

According to the second aspect of the present invention, the combination of segments determined by the segment determination means is necessary for constructing a plurality of segment rings.
By repeating the input of the combination of segments, it is possible to determine an appropriate combination of segments necessary for constructing a plurality of segment rings.

[0012] The invention according to claim 3 provides the above-mentioned plan line
Combination of segments that can bring the virtual line closest
If the Align is determined, among a plurality a provided jack in the shield machine for shield machine to obtain a thrust, the jack pattern is a combination of jack suitable for carrying out the excavation along the virtual line It is characterized by having jack pattern selection means 11 for selection.

The shield excavator is provided with a plurality of (for example, 24) jacks along the circumferential direction of the shield excavator so that the shield excavator obtains thrust.
By operating a predetermined combination of these jacks, the shield machine obtains a thrust in the direction in which the resultant force of these jacks acts. That is, if the combination of jacks is determined, the direction of excavation can be determined.

The jack pattern selecting means of the excavation management system is provided with a jack pattern file storing data of several jack patterns corresponding to several excavation directions in advance. Then, by inputting the direction to be dug, the jack pattern selecting means selects a jack pattern suitable for excavating in this direction from the data of the jack pattern file.

According to the third aspect of the present invention, a jack for selecting a jack pattern which is a combination of jacks suitable for excavating along an imaginary line which is a path along an axial direction of a segment ring to be constructed. Since the pattern selecting means is provided, it is possible to perform excavation along the virtual line. Thereby, a segment ring can be constructed along a virtual line. Here, the imaginary line does not always completely coincide with the plan line, but rather often has a slight error. Therefore, if a jack pattern for excavating along the planning line is selected, excavation along the virtual line is not performed, and therefore, a planned segment may not be constructed. Thus, in the present invention, a jack pattern for excavating along a virtual line, not a planning line, is selected, so that a more suitable jack pattern can be selected.

According to a fourth aspect of the present invention, in the excavation management system according to the third aspect, it is determined whether or not a stroke difference, which is a displacement amount between the shield excavator and the virtual line, satisfies an allowable value. A stroke difference determining means 12 is provided for each excavation of a unit shorter than one ring, and when the stroke difference determining means determines that the stroke difference does not satisfy the allowable value, the jack pattern selecting means 11 re-determines the stroke difference. The jack pattern is configured to be selected.

The excavation management system includes machine position measuring means for measuring the position of the shield excavator, and the stroke difference can be obtained by comparing the measurement result of the machine position measuring means with a virtual line.

According to the fourth aspect of the present invention, there is provided a stroke difference judging means for judging a stroke difference, and when it is judged that the stroke difference does not satisfy the allowable value, the jack pattern is selected again by the jack pattern selecting means. Since it is configured to select, the jack pattern can be corrected to an appropriate jack pattern for each excavation shorter than one ring based on the stroke difference.

According to a fifth aspect of the present invention, in the excavation management system according to the third aspect, a tail clearance, which is a radial distance between a rear portion of the shield excavator and an outer peripheral portion of the existing segment ring, is an allowable value. And a tail clearance determining unit 13 for determining whether or not the jack clearance is satisfied. When the tail clearance determining unit determines that the tail clearance does not satisfy the allowable value, the jack pattern selecting unit 11 again determines the jack pattern. Is selected.

Here, the tail clearance is the distance between the inner wall of the tail part (rear part) of the shield machine and the outer peripheral part of the existing segment, which is necessary for the construction of the segment. The excavation management system includes a tail clearance measuring unit that measures a tail clearance, and a measurement result by the tail clearance measuring unit is input to the tail clearance determining unit, whereby the tail clearance is determined by the tail clearance determining unit. It is determined whether or not the tolerance is satisfied.

According to the fifth aspect of the present invention, there is provided a tail clearance judging means for judging the tail clearance, and when it is judged that the tail clearance does not satisfy the allowable value, the jack pattern is selected again by the jack pattern selecting means. Since it is configured to select, the tail clearance that satisfies the tolerance can be maintained, and the construction space for the segment can be reliably secured.

According to a sixth aspect of the present invention, in the excavation management system according to the third aspect, the operator determines that the jack pattern selection result by the jack pattern selecting means 11 is inappropriate, and the operator determines the jack pattern. An operation learning means for learning the operation of the operator when the correction is made;
And a learning result reflecting means 15 for causing the jack pattern selecting means to select the learned jack pattern when the same situation as when the learning is performed by the operation learning means is performed. It is characterized by having.

Since a large number of jacks, for example, 24, are provided, the number of these combinations is extremely large. In the jack pattern file of the jack pattern selection means, some jack pattern data is stored in advance, but when excavating in a certain direction,
In some cases, jack pattern data that is optimal for this excavation is not in the jack pattern file. In such a case, the operator corrects (inputs) the jack pattern once selected by the jack pattern selecting means. At this time, the operation learning means causes the jack pattern data to store (learn) the new jack pattern data input by the operator as a combination of jacks corresponding to the direction to be dug. Then, when it is next time to dig in the same direction, the stored jack pattern is selected by the operation of the learning result reflecting means.

According to the invention described in claim 6, the operation learning means for learning the operation of the operator and the jack pattern selecting means, when the same situation as when the learning is performed, is performed, And a learning result reflecting means for selecting the jack pattern that has been learned, so that from the next time, the learned jack pattern is selected and excavated in an optimal direction without waiting for the operation of the operator. be able to.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the excavation management system according to the present invention includes a control unit 1 for controlling the excavation management system, an excavation unit 2 for excavation, a jack 3 for a shield excavator to obtain thrust, It is roughly constituted by a copy cutter 4 for excavating the side of the shield machine, a measuring unit 5 for performing various measurements, an operation unit 6 for an operator to operate, and the like.

The operation section 6 includes an operation panel 61 for the operator to perform input work and the like, and a display section 62 for displaying various information related to the operation.

As shown in FIG. 2, the control unit 1 includes a segment determination unit 1 for determining a combination of segments.
0, a jack pattern selecting means 11 for selecting a jack pattern, a stroke difference determining means 12 for determining a stroke difference, a tail clearance determining means 13 for determining a tail clearance, an operation learning means 14 for learning an operation of an operator, A learning result reflecting means 15 for reflecting the learning result by the operation learning means 14 is provided.

As shown in FIG. 3, the measuring section 5 includes a tail clearance measuring means 5 for measuring a tail clearance.
0, machine position measuring means 51 for measuring the position of the shield excavator, segment position measuring means 52 for measuring the position of the existing segment, and segment squareness measurement for measuring the difference in the axial direction between the shield excavator and the existing segment. It is provided with means 53 and the like.

Among the components of the control unit 1, the segment determining means 10 inputs the combination of segments necessary for assembling the segment ring to be constructed on the operation panel 61 based on the operator's prediction. By comparing the virtual line, which is a path along the axial direction of the segment ring that will be constructed by combining these segments, with a predetermined planning line, it is determined whether the content of the input by the operator is appropriate. Is determined.

The jack pattern selecting means 11
In order for the shield excavator to obtain thrust, the virtual line is included in a plurality of jacks 3 (for example, 24 jacks 3 are provided along the circumferential direction of the shield excavator) provided in the shield excavator. The jack pattern which is a combination of jacks suitable for digging along is selected. The control unit 1 is provided with a jack pattern file 17 that stores data of some jack patterns previously associated with several directions to be dug. Then, based on the virtual line, the direction to be excavated is input to the jack pattern selecting means 11, so that the jack pattern selecting means 11 determines a jack combination suitable for excavating in this direction in the jack pattern file 17. Of data.

The stroke difference judging means 12 judges whether or not the stroke difference, which is the amount of deviation between the shield machine and the imaginary line, satisfies an allowable value for each excavation shorter than one ring (for example, 30 cm). Every excavation). Here, the stroke difference is calculated by comparing the position of the shield machine measured by the machine position measuring means 51 of the measuring section 5 with the virtual line. And
When the stroke difference determination unit 12 determines that the stroke difference does not satisfy the allowable value, in other words, when the position of the shield machine deviates from the virtual line by a certain degree or more, the jack pattern selection unit 11 changes the jack pattern again. The route is selected, so that the route can be returned to a route along the virtual line.

The tail clearance determining means 13 determines whether or not the tail clearance, which is the radial distance between the rear part of the shield machine and the outer peripheral part of the existing segment ring, satisfies an allowable value. is there. When the tail clearance determining means 13 determines that the tail clearance does not satisfy the allowable value, the jack pattern selecting means 11 selects the jack pattern again.

The operation learning means 14 stores the operation of the operator when the operator judges that the jack pattern selection result by the jack pattern selecting means 11 is inappropriate and corrects the jack pattern. ). Then, by the operation of the learning result reflecting means 15,
Next time, when the same situation as when the learning is performed is reached, the jack pattern selecting means 11 selects the learned jack pattern.

Here, for example, 24 jacks 3 are provided along the circumferential direction of the shield machine,
The number of combinations of these jacks 3 becomes extremely large. Some jack pattern data is stored in the jack pattern file 17 of the jack pattern selection means 11 in advance. When jacking is to be performed in a certain direction, the jack pattern data optimal for this excavation is stored in the jack pattern file. 17 may not be present. In such a case, the operator corrects (inputs) the jack pattern once selected by the jack pattern selecting means 11. At this time, the operation learning unit 14 stores (learns) new jack pattern data input by the worker in the jack pattern file 17 as a combination of jacks corresponding to the direction in which the vehicle is to be dug. And
The next time you should dig in the same direction, the learning result reflecting means 1
By the operation of 5, the jack pattern selecting means 11 selects the stored jack pattern.

Next, the excavation work using the excavation management system according to the present invention will be described with reference to the flowcharts shown in FIGS. First, step S1
, The operator inputs data (related to the amount of taper, etc.) of various segments to be used on the operation panel 61. Then, the input data is transmitted to the control unit 1.
Is stored in the segment data file 16.

Next, segment planning is performed. That is, the combination of segments necessary for assembling the segment ring to be constructed is determined based on the operator's prediction based on the operation panel 6.
In step 1, the operator inputs (step S2). Then, based on the data stored in the segment data file 16, the segment determining means 10 calculates a virtual line, which is a path along the axial direction of the segment ring that will be constructed by the combination of segments input by the operator. At the same time, the virtual line is compared with a predetermined planning line, and it is determined whether or not the content of the input by the operator is appropriate, and the determination result is displayed on the display unit 62 (step S3). . Here, the combination of segments input by the operator is a plurality of segment rings (for example, 5 segment rings).
Ring) is what is needed to build it.

Then, the segment determining means 10
If it is determined that the contents of the input are not appropriate, the process returns to step S2, and the operator inputs a combination of segments.

If the segment determining means 10 determines that the contents of the input by the operator are appropriate, the jack pattern selecting means 11 will construct a segment that will be constructed by the combination of the segments input in step S2. A jack pattern that is a combination of jacks suitable for digging along the imaginary line of the ring is selected. That is, data suitable for excavation along the virtual line is selected from the data of the jack pattern file 17 (step S4).

Next, the excavating system measures the position of the shield excavator by the machine position measuring means 51, and determines the axial direction of the shield excavator and the existing segment by the segment perpendicularity measuring means 53. By measuring each of them and comparing them, the direction difference (squareness) between the shield machine and the existing segment is calculated (step S5). This completes the creation of the database (step S6). here,
The operator may determine that the jack pattern selected in step S4 is inappropriate, and correct the jack pattern. At this time, a new jack pattern input by the operator is stored in the jack pattern file 17 by the operation of the operation learning means 14 (step S9). That is, the jack pattern file 17
Can be rewritten at any time.

Then, the combination of the segments necessary for constructing the five-ring segment ring is set on the operation panel 6.
In step 1, an input is made again (step S7). The segment ring constructed by this combination is, for example, "S (standard ring) -ST (taper ring) -SS" or "S-S-T-T-S".
And so on. Also, there are various types of taper rings with various types of taper amounts, and the degree of curve is adjusted by selectively using segment rings with various taper amounts.

Next, excavation is started by the excavation unit 2 (step S8), and it is confirmed again whether a jack pattern appropriate for the excavation direction is selected (step S9). Again, the operator determines that the jack pattern previously selected in step S4 or step S6 is inappropriate, and if the jack pattern is corrected, a new jack pattern is stored in the jack pattern file 17. Is stored.

Further, the tail clearance measuring means 50
As a result, the measurement of the tail clearance, which is the radial distance between the rear part of the shield machine and the outer peripheral part of the existing segment ring, is started, and whether the tail clearance satisfies the allowable value is determined by the tail clearance determination unit 13. Start monitoring (step S1).
0). Here, the tail clearance measuring means 60 is provided at a plurality of portions at the rear of the shield machine (for example, at the rear of the shield machine at a total of three locations at the top and left and right). Then, it is desirable to maintain the attitude of the shield machine so that the measured values at the plurality of locations become substantially equal. During this monitoring, the tail clearance determination means 13
However, when it is determined that the tail clearance does not satisfy the allowable value, the jack pattern is again selected by the jack pattern selecting means 11. Also, at this time, if the jack pattern selected by the jack pattern selecting means 11 is corrected by the operator as inappropriate,
A new jack pattern is stored in the jack pattern file 17.

When the excavation proceeds and, for example, excavation of 30 cm is performed, a stroke difference is determined by the stroke difference determining means 12 (step S11). That is, for example, the three-dimensional coordinates of the tip of the shield machine measured by the machine position measuring means 51 and 30c along the virtual line
A comparison is made with the three-dimensional coordinates of the point that has traveled m, and it is determined whether or not the difference between these coordinates satisfies an allowable value.

If it is determined in step S11 that the stroke difference satisfies the allowable value, the excavation is performed by continuing the same jack pattern (step S12). And until one stroke is completed
The stroke difference is determined for every 30 cm excavation.

When the excavation for one stroke (for one ring) is completed (step S13), the segment assembling device provided at the rear of the shield excavator performs the assembling work for the segments for one ring (step S14). .

When the assembling work of one ring segment is completed, it is determined whether or not the survey point has been reached (step S15). Here, the surveying points are set, for example, for every three rings of construction in accordance with the timing of day and night change of work. When the survey point is reached, the position of the shield machine measured by the machine position measuring means 51 and the segment position measuring means 52
Is compared with the virtual line. That is, the stroke difference is determined by the stroke difference determining means 12, and the segment position determining means 18 determines whether the position of the existing segment is within the allowable range. (Step S16).

If it is determined in step S17 that the position of the shield machine and the position of the existing segment are appropriate based on the determination result in step S16, the process returns to step S8 and continues. Do excavation. Conversely, if it is determined in step S17 that the position of the shield machine and the position of the existing segment are not appropriate, the segment plan is corrected. That is, segment planning is performed again (steps S18 and S19).

If it is determined in step S11 that the stroke difference does not satisfy the allowable value, the corrected excavation direction is input to the jack pattern selection means 11 so as to excavate along the virtual line. A jack pattern suitable for the input excavation direction is selected (S20). Also in this case, if the operator determines that the jack pattern selected by the jack pattern selecting means 11 is inappropriate and inputs a new jack pattern, the input jack pattern becomes the jack pattern file 1.
7 is stored.

Here, it is determined whether or not the shield jacking machine is provided with the optimal jack 3 for digging in the corrected digging direction (step S21). Excavation is performed, and the process proceeds to step S11. Conversely, if it is determined in step S21 that there is no optimal jack, the automatic operation of the shield machine is terminated (step S22), and check items such as the perpendicularity of the existing segment are examined (step S23). ). If necessary, the copy cutter 4 is used to dig the side of the shield machine and perform side operation to correct the position of the shield machine (S24).

According to the excavation management system according to the present invention as described above, since the segment determination means 10 is provided, the input of the combination of segments is repeated,
A reasonable combination of segments can be determined. Thereby, a plurality of segment rings can be suitably constructed along a predetermined planning line. This excavation management system is useful mainly for selecting an appropriate combination of segments (performing a segment plan) in a curved portion.

Further, there is provided a jack pattern selecting means 11 for selecting a jack pattern which is a combination of jacks suitable for excavating along a virtual line which is a path along the axial direction of the segment ring to be constructed. Therefore, excavation can be performed along the virtual line. Thereby, a segment ring can be constructed along a virtual line.

Further, a stroke difference judging means 12 for judging a stroke difference is provided, and when it is judged that the stroke difference does not satisfy the allowable value, the jack pattern selecting means 11 selects the jack pattern again. Therefore, the jack pattern can be corrected to an appropriate one every time excavation of a unit shorter than one ring is performed based on the stroke difference.

A tail clearance judging means 13 for judging a tail clearance is provided. When it is judged that the tail clearance does not satisfy the allowable value, the jack pattern is selected by the jack pattern selecting means 11 again. Therefore, the tail clearance that satisfies the allowable value can be maintained, and the construction space for the segment can be reliably secured.

The operation learning means 14 for learning the operation of the worker and the jack pattern selecting means 11 select the learned jack pattern when the same situation as when the learning is performed is reached. And the learning result reflecting means 15 for performing the learning, so that from the next time, the learned jack pattern can be selected and excavated in an optimal direction.

Note that, in the above embodiment, 5
Although the segment plan for the ring is performed, it may be one ring or a plurality of rings other than five rings. In addition, for example, the stroke difference is determined for each excavation of a predetermined length, such as about 30 cm, but the stroke difference is continuously monitored by performing the determination continuously, and the stroke difference is determined by the determination. If the allowable value is not satisfied, the jack pattern may be changed at any time.

[0056]

According to excavation control system according to the invention of claim 1, wherein, according to the present invention, when a combination of segments is input based on the prediction of the worker, the combination of these input segments <br/> DOO Computes a virtual line , which is the path along the axial direction of the segment ring that would be constructed by
In the above, the combination of the input segments plans a virtual line
Whether the combination is the closest to the line
Determining whether the by comparison between the planned line and the calculated virtual line
By doing so, a segment determining means for determining whether or not the content of the input by the operator is appropriate is provided. Therefore, by repeating the input of the combination of the segments, the appropriate combination of the segments can be determined. Thereby, a segment ring can be suitably constructed along a predetermined planning line. This excavation management system is useful mainly for selecting an appropriate combination of segments (performing a segment plan) in a curved portion.

According to the excavation management system according to the second aspect of the present invention, since the segment combination determined by the segment determining means is necessary for constructing a plurality of segment rings, the input of the segment combination is repeated. This makes it possible to determine a proper combination of segments necessary for constructing a plurality of segment rings.

According to the excavation management system of the third aspect, the jack is a combination of jacks suitable for excavating along a virtual line which is a path along the axial direction of the segment ring to be constructed. Since the jack pattern selecting means for selecting a pattern is provided, excavation can be performed along the virtual line. Thereby, a segment ring can be constructed along a virtual line. In the present invention, since a jack pattern for excavating along a virtual line, not a planning line, is selected, a more suitable jack pattern can be selected.

According to a fourth aspect of the present invention, there is provided the excavation management system, further comprising a stroke difference determining means for determining a stroke difference, and a jack pattern selecting means when it is determined that the stroke difference does not satisfy the allowable value. , The jack pattern is selected again, so that the jack pattern can be corrected to an appropriate one for each excavation shorter than one ring based on the stroke difference.

According to the excavation management system according to the fifth aspect of the present invention, there is provided a tail clearance judging means for judging a tail clearance, and a jack pattern selecting means when it is judged that the tail clearance does not satisfy an allowable value. Thus, the jack pattern is selected again, so that the tail clearance that satisfies the allowable value can be maintained, and the construction space for the segment can be reliably secured.

According to the excavation management system according to the sixth aspect of the present invention, the operation learning means for learning the operation of the worker, and the jack pattern is formed when the same situation as when the learning is performed is achieved. Since the selecting means includes learning result reflecting means for selecting the learned jack pattern, the next time, without waiting for the operation of the operator, the learned jack pattern is selected and optimized. You can dig in any direction.

[Brief description of the drawings]

FIG. 1 is an overall block diagram showing an excavation management system according to the present invention.

FIG. 2 is a block diagram showing details of a control unit.

FIG. 3 is a block diagram illustrating details of a measurement unit.

FIG. 4 is a part of a flowchart for explaining the excavation management system according to the present invention.

FIG. 5 is the remaining part of the flowchart for explaining the excavation management system according to the present invention.

[Explanation of symbols]

 Reference Signs List 3 jack 10 segment determining means 11 jack pattern determining means 12 stroke difference determining means 13 tail clearance determining means 14 operation learning means 15 learning result reflecting means

Continuation of the front page (56) References JP-A-9-296679 (JP, A) JP-A-3-107093 (JP, A) JP-A-9-184394 (JP, A) JP-A-10-266769 (JP) JP-A-6-257399 (JP, A) JP-A-6-10587 (JP, A) Patent 2765553 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 11 / 04-11/40 E21D 9/06 301

Claims (6)

(57) [Claims] An excavation management for managing a segment ring construction position in a shield construction method in which a segment ring is constructed along a plan line while excavating along a predetermined plan line using a shield excavator. a system, combination, is input based on the prediction of the operator segment required to assemble the segment ring to be constructed
If it is, then calculate the virtual line is a path along the axial direction of the would will segment ring constructed by a combination of segments these input, further, a combination of segments the input virtual line To
Is the combination that can be closest to the planning line?
How, by comparing the planned line and the calculated virtual line
By determining, excavation control system characterized by comprising a segment determining means for contents of the input by the operator of a combination of segments to perform appropriate determination of whether. 2. The excavation management system according to claim 1, wherein a combination of segments determined by said segment determination means is necessary for constructing a plurality of segment rings. 3. A virtual line is brought closest to the planning line.
When the combination of segments that can be used is determined
To, among the plurality a provided jack in the shield machine for shield machine to obtain a thrust jack pattern selecting means for selecting a jack pattern is a combination of jack suitable for carrying out the excavation along the virtual line The excavation management system according to claim 1 or 2, further comprising: 4. A stroke difference judging means for judging whether or not a stroke difference between the shield excavator and the virtual line satisfies an allowable value for each excavation of a unit shorter than one ring. When the stroke difference determination means determines that the stroke difference does not satisfy the allowable value, the jack pattern selection means selects the jack pattern again. 3. The excavation management system according to 3. 5. A tail clearance determining means for determining whether or not a tail clearance which is a radial distance between a rear part of the shield machine and an outer peripheral part of an existing segment ring satisfies an allowable value, When the tail clearance determining means determines that the tail clearance does not satisfy the allowable value,
The excavation management system according to claim 3, wherein the jack pattern selecting means is configured to select a jack pattern again. 6. An operation learning means for learning the operation of the operator when the operator determines that the jack pattern is selected by the jack pattern selecting means is inappropriate and corrects the jack pattern. And a learning result reflecting means for causing the jack pattern selecting means to select the learned jack pattern when the same situation as when the learning is performed by the operation learning means is provided. The excavation management system according to claim 3, wherein