Earthmoving plan management device, earthmoving plan management method, and earthmoving plan management program

Abstract

To provide a hauling scheme management device capable of estimating and displaying, a land form of any time point by a simple method.SOLUTION: There is provided a hauling scheme management device comprising: a construction area data acquiring part for acquiring construction area data in which, a construction object area is divided into a plurality of construction areas, in a two-dimensional plane diagram of the construction object area; a construction area information acquiring part for acquiring construction area information which includes, an area of each construction area, and a ground level at a first time point; a hauling data acquiring part for acquiring hauling data which includes at least, a construction period, a construction area where cutting construction is executed, a construction area in which banking construction is executed, and hauling data including a hauling amount; and a ground level estimating part for deriving a soil amount change in the construction area, between the first time point and a second time point which is at least any time point out of before and after the first time point, using the acquired hauling data, then estimating the ground level at the respective second time point in the construction area, on the basis of the derived soil amount change, the respective areas of the construction areas, and the ground level at the first time point.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an earthmoving plan management device, an earthmoving plan management method, and an earthmoving plan management program.

Background Art

[0002] In recent years, for example, in the field of civil engineering and public works such as bridges, tunnels, dams, earthworks, and rivers, when constructing various buildings, business transformation by shifting from 2D drawings to 3D models, or applying loads in the initial process (front) and intensively considering them in advance to prevent setbacks that may occur in subsequent processes, and to improve quality and shorten the construction period. By front-loading, which enables the acceleration of consensus formation, the efficiency of operations, the improvement of quality, and ultimately the improvement of productivity, the Ministry of Land, Infrastructure, Transport and Tourism has been developing guidelines and attempting systematic promotion so that CIM (Construction Information Modeling / Management) can be smoothly introduced. For this reason, various 3D model analysis programs and software for creating 3D CIM models have been developed.

[0003] Also, different from conventional 3D CAD that creates 2D drawings and then assembles 3D shapes and simulates them with CG, BIM (Building Information Modeling) models that can be designed in 3D from the beginning and create 3D models have been developed. In a BIM model, since it is an aggregate of 3D objects, it is possible to add attribute data such as cost, finish, and management information to these objects, and it becomes possible to utilize the information accumulated in the model throughout the entire life cycle of the building, from design and construction to maintenance management. As BIM tools capable of creating BIM models, various 3D CAD software such as "ArchiCAD" and "Revit" are known.

[0004] Furthermore, in order to complete the construction within a specified construction period, for example, various process management softwares are known for managing the planning and implementation of processes in public works. In particular, based on the concept of TOC (Theory of Constraints), which is a theory of constraints, process management software that adopts Critical Chain Project Management (CCPM) developed from an overall optimization perspective has also been developed. Here, the critical chain is a method that, when considering the execution order of each task in a project, in addition to the conventional method based on the critical path method that takes into account the dependency relationships in the work process, also takes into account the dependency relationships that occur due to limited necessary resources. Project management is a practical method of project management aimed at shortening the construction period and meeting the delivery date, taking into account the human psychology and behavioral characteristics of personnel, as well as social and organizational issues. The safety margins removed from each task are aggregated and managed as "buffers".

[0005] In the case of construction work in hilly areas or mountainous areas, it is necessary to formulate an earthwork plan regarding, for example, using the earth and sand generated by cutting construction as the earth and sand for filling construction, or setting the transportation destination for transporting the earth and sand generated by cutting construction as surplus soil, and also arranging dump trucks for transporting the earth and sand. In the case of large-scale construction work, since the terrain changes significantly every day, even if an earthwork plan is formulated, it is difficult to grasp construction problems and the like in advance.

[0006] Here, in formulating the earthwork plan, from various survey data obtained by surveying, a current terrain model is generated, and using the current terrain model, for example, in an earthwork plan formulation device, a designed terrain model showing the terrain after construction is generated. In this case, it is carried out to confirm what kind of terrain it will be during the construction, or at the stage when the construction progresses, to confirm what kind of terrain the terrain was before the construction.

[0007] On the one hand, in the above technical field, Patent Document 1 discloses a technique for calculating and outputting construction plan data based on the difference between the current terrain data obtained by camera shooting using a drone and the design terrain data indicating the design terrain of the construction site, and the unit data indicating the conditions of the working machine (paragraphs

[0082] to

[0092] of the same document, etc.).

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0009] However, in the technique described in the above Patent Document 1, in order to reproduce the current terrain during construction, camera shooting using a drone is required each time, so it was not possible to estimate and display the terrain at an arbitrary time by a simple method.

Means for Solving the Problems

[0010] To achieve the above object, the earthmoving plan management device according to the present invention includes a construction area data acquisition unit that acquires construction area data obtained by dividing the construction target area into a plurality of construction areas in a two-dimensional plan view of the construction target area; a construction area information acquisition unit that acquires construction area information including the area of each of the plurality of construction areas and the ground height at a first time point; an earthmoving data acquisition unit that acquires earthmoving data including at least the construction period, the construction area where cutting construction is performed, the construction area where filling construction is performed, and the earthmoving volume; Using the obtained earth-moving data, derive the earth volume change of each construction area between the first time point and a second time point which is at least one of the time points before and after the first time point, and based on the derived earth volume change, the area of each of the obtained construction areas, and the ground height at the first time point, estimate the ground height of each of the construction areas at the second time point, a ground height estimation unit; is provided with.

[0011] Also, in order to achieve the above object, the earth-moving plan management method according to the present invention In a two-dimensional plan view of a construction target area, a construction area data acquisition step of acquiring construction area data obtained by dividing the construction target area into a plurality of construction areas; A construction area information acquisition step of acquiring construction area information including the area of each of the plurality of construction areas and the ground height at the first time point; An earth-moving data acquisition step of acquiring earth-moving data including at least the construction period, the construction area where cut-earth construction is performed, the construction area where fill-earth construction is performed, and the earth-moving volume; Using the obtained earth-moving data, derive the earth volume change of each construction area between the first time point and a second time point which is at least one of the time points before and after the first time point, and based on the derived earth volume change, the area of each of the obtained construction areas, and the ground height at the first time point, estimate the ground height of each of the construction areas at the second time point, a ground height estimation step; including.

[0012] Furthermore, in order to achieve the above object, the earth-moving plan management program according to the present invention In a two-dimensional plan view of a construction target area, a construction area data acquisition step of acquiring construction area data obtained by dividing the construction target area into a plurality of construction areas; A construction area information acquisition step of acquiring construction area information including the area of each of the plurality of construction areas and the ground height at the first time point; An earthwork data acquisition step of acquiring earthwork data including at least a construction period, an excavation construction area where excavation work is performed, an embankment construction area where embankment work is performed, and an earthwork volume; Using the acquired earthwork data, derive the earth volume change of each construction area between the first time point and a second time point which is at least one of the time points before and after the first time point, and based on the derived earth volume change, the area of each of the acquired construction areas, and the ground height at the first time point, estimate the ground height at each second time point of each construction area in a ground height estimation step; Cause a computer to execute.

Advantages of the Invention

[0013] According to the present invention, the terrain at any time can be estimated and displayed by a simple method. In addition, it becomes possible to formulate an earthwork plan adapted to the terrain during construction.

Brief Description of the Drawings

[0014]

Figure 1A

Figure 1B

Figure 1C

Figure 2

Figure 3A

Figure 3B

Figure 4

Figure 5A

Figure 5B

Figure 5C

Figure 5D

Figure 6

Figure 7

Figure 8

Figure 9A

Figure 9B

Embodiments for Carrying Out the Invention

[0015] Hereinafter, embodiments for carrying out the present invention will be exemplarily and detailedly described with reference to the drawings. However, the configurations, numerical values, processing flows, functional elements, etc. described in the following embodiments are merely examples, and their modifications and changes are free, and are not intended to limit the technical scope of the present invention to the following description.

[0016] [First Embodiment] The earthwork plan management device 100 as the first embodiment of the present invention will be described with reference to FIGS. 1A to 5D. The earthwork plan management device 100 is a device for estimating the ground height at any point in the construction target area when performing construction work in hilly areas, mountainous areas, etc. First, with reference to FIGS. 1A to 1C, the outline of the operation of the earthwork plan management device 100 will be described.

[0017] The earthwork plan management device 100 is a device that manages the earthwork plan for each of the construction areas 130 generated by dividing the construction target area into a plurality of areas, when performing construction on the current terrain to create the target terrain (see FIG. 1A). That is, the earthwork plan management device 100 obtains an earthwork plan regarding the order of cut and fill construction, transportation, etc., formulated based on the current terrain model 110 showing the current terrain and the designed terrain model 120 showing the shape of the construction target area after construction (see FIG. 1B). As shown in FIG. 1B, the earthwork plan is composed of earthwork data that sets how much earth and sand is to be transported, at what time, and in what quantity, from which cut area 140 (which is a construction area 130 where cut construction is performed) to which fill area 150 (which is a construction area 130 where fill construction is performed). By accumulating the earthwork data for each construction area to calculate the cumulative earthwork volume, the change in the earth volume can be derived. By dividing the calculated cumulative earthwork volume by the area of the construction area, an approximate value of the change in the height (ground height) of the construction area can be calculated. When this change value is added to or subtracted from the initial ground height of the construction area based on the current terrain model 110 showing the current terrain, the ground height after construction can be calculated. Also, by extracting the earthwork data up to an arbitrary point in time from all the earthwork data and accumulating their earthwork volumes, the change value of the ground height up to the arbitrary point in time can be calculated, so the terrain (ground height) at any point during construction can be estimated.

[0018] In this way, when the earthmoving plan management device 100 is used to obtain the earthmoving plan in the construction target area, as shown by the arrows in Fig. 1C, if the information of the earthmoving plan indicating which soil is transported to where is reflected in the current terrain model 110, the user can confirm, for example, the terrain of the entire construction target area at an arbitrary time point such as one week or one month after the start of construction, and the ground elevation of each construction area 130 within the construction target area (see Fig. 1C). In the examples shown in Figs. 1A to 1C, each of the construction areas 130 has the same area or represents a square planar shape, but the area and planar shape of each of the construction areas 130 may be different.

[0019] Also, in the earthmoving plan, even if the areas of the respective construction areas 130 are the same or different, the cutting area 140 and the filling area 150 do not necessarily have to correspond one-to-one. For example, the earth and sand from one cutting area 140 may be transported to a plurality of filling areas 15,0. Similarly, the earth and sand from a plurality of cutting areas 140 may be transported to one filling area 150.

[0020] Next, with reference to Fig. 2, the configuration of the earthmoving plan management device 100 will be described. The earthmoving plan management device 100 includes a construction area data acquisition unit 201, a construction area information acquisition unit 202, a three-dimensional terrain data acquisition unit 205, a current ground elevation acquisition unit 208, an earthmoving data acquisition unit 203, a ground elevation estimation unit 204, an estimated three-dimensional terrain data generation unit 206, and an output control unit 207.

[0021] The construction area data acquisition unit 201 acquires construction area data obtained by dividing the construction target area into a plurality of construction areas 130 on the two-dimensional plan of the construction target area. The division into the construction areas 130 may be, for example, in a mesh shape such that the areas of the respective construction areas 130 are equal on the two-dimensional plan of the construction target area, or may be divided into an arbitrary polygon (multilateral) shape. Further, it may be divided according to the shape, height difference, etc. of roads and rivers in the construction target area. Furthermore, it is preferable that each of the construction areas 130 is divided into a cutting area 140 and a filling area 150.

[0022] The construction area information acquisition unit 202 acquires construction area information including the area of each of the plurality of construction areas 130 and the ground elevation at the first time point. The first time point is a time point at which the current ground elevation or the designed ground elevation of each construction area can be grasped. The construction area information may be acquired, for example, by accessing a predetermined database or the like, or may be acquired from construction area data or data obtained by surveying or the like performed before construction. The ground elevation (m) may be, for example, the height (elevation) of the ground surface from an arbitrarily set reference plane or the altitude of the ground surface. Also, the area of the construction area 130 may be acquired from the coordinate information of the construction area data using the GIS (Geographic Information System) function. Note that the ground elevation at the first time point may be that before the start of construction, during construction, or after construction of the construction area 130, and may also be the designed ground elevation based on the designed terrain model 120 designed before construction, or the current ground elevation based on the current terrain model 110 generated from actual survey data regardless of before or after construction.

[0023] The three-dimensional terrain data acquisition unit 205 acquires three-dimensional terrain data indicating the three-dimensional terrain of the construction target area at the first time point. The three-dimensional terrain data is the current terrain model 110 generated from three-dimensional data composed of a plurality of three-dimensional coordinates with height information added to the plane coordinates acquired before the start of construction or during construction. The three-dimensional terrain data is generated, for example, from three-dimensional data analyzed from aerial photography images by an unmanned aircraft such as a drone or three-dimensional data acquired by on-site surveying, but is not limited thereto. Also, if the first time point is the completion time, the three-dimensional terrain data may be the designed terrain model 120.

[0024] The current ground level acquisition unit 208 acquires the ground level at the first time point for each of the construction areas 130 by overlaying the acquired three-dimensional topographical data on the construction area data of the construction target area. In other words, the current ground level acquisition unit 208 acquires the height data within each construction area region of the two-dimensional planar data by overlaying the acquired three-dimensional stereoscopic data on the two-dimensional planar data, and acquires height information contained in the three-dimensional topographical data, which is three-dimensional stereoscopic data within the same region, and sets this as the ground level for each of the construction areas 130. Here, if the topography within the construction area is undulating greatly and the ground level is not constant, the height midway (for example, 1 / 2) between the highest point and the lowest point in the construction area 130 may be set as the ground level. Furthermore, the average value of the ground levels of multiple points in the construction area 130 may be set as the ground level for that construction area. Note that if there is a large difference in elevation within the construction area, it is desirable to further divide the construction area.

[0025] The soil movement data acquisition unit 203 acquires soil movement data including at least the construction time, identification information of the construction area (cutting area 140) where cut earth construction will be performed, identification information of the construction area (filling area 150) where fill earth construction will be performed, and the amount of soil to be moved. The planned soil movement data or actual soil movement data may be acquired as data from an external source, or may be input by the operator using a keyboard or the like on the screen of the soil movement plan management device 100.

[0026] Here, the soil movement data includes at least one of planned soil movement data that is planned before construction of all or part of the construction area, and actual soil movement data that shows the actual construction carried out on all or part of the construction area.

[0027] The planned soil transport data is calculated by comparing the survey data before the start of construction with the topographical data at the time of completion in the design stage. 3This is data for formulating a construction plan regarding from which construction area (excavation area 140) and to which construction area (embankment area 150) the earth and sand (quantity of transported earth and sand) is to be transported. By obtaining planning information regarding the transportation of earth and sand in this way, it can be used when estimating the ground elevation (topography) at an arbitrary point in time.

[0028] In addition, the actual transported earth and sand data is the transported earth and sand data obtained and accumulated by acquiring the earth volume data regarding the earth and sand actually transported by a dump truck or the like every time a predetermined period of time elapses. That is, it is data that aggregates information regarding how much earth and sand (quantity of transported earth and sand), at what time (construction period), from which construction area (excavation area 140), and to which construction area (embankment area 150) was transported. By aggregating information regarding the transportation of earth and sand in this way, it can be used when reproducing the formed ground elevation (topography) at an arbitrary point in time. 3 This is data for formulating a construction plan regarding from which construction area (excavation area 140) and to which construction area (embankment area 150) the earth and sand (quantity of transported earth and sand) is to be transported. By obtaining planning information regarding the transportation of earth and sand in this way, it can be used when estimating the ground elevation (topography) at an arbitrary point in time.

[0029] In addition, the excavation area 140 is the construction area 130 where excavation work designated as the excavation area is performed based on the transported earth and sand data, and the embankment area 150 is the construction area 130 where embankment work designated as the embankment area is performed based on the transported earth and sand data.

[0030] The ground elevation estimation unit 204 estimates the ground elevation at each second point in time of the construction area using the acquired transported earth and sand data. By calculating the integrated transported earth and sand volume obtained by integrating the transported earth and sand volume of each construction area 130 between the first point in time and the second point in time which is at least one of the points in time before and after the first point in time, the change in earth volume is derived, and based on the derived integrated transported earth and sand volume which is the change in earth volume, the area of each construction area 130 that was acquired, and the ground elevation at the first point in time, the ground elevation at each second point in time of the construction area 130 is estimated. The second point in time is an arbitrary point in time for which the estimated topography is to be simulated, and it may be after or before the first point in time, or a plurality of points in time may be specified. When a plurality of points in time are specified, the ground elevation for each of the plurality of second points in time can be estimated, and the change in topography according to the progress of the construction can be confirmed. The second point in time is specified, for example, by an operator inputting it using a keyboard or the like on the screen of the transported earth and sand plan management device 100.

[0031] The earth-moving data includes data on how much earth and sand (earth-moving volume) is transported from which construction area (cutting area 140) to which construction area (filling area 150) at which time (construction time). Therefore, the ground height estimation unit 204 extracts the earth-moving data when the construction time is between the first time point and the second time point, and for each construction area, when the construction area corresponds to a cutting construction area, a negative earth-moving volume is accumulated, and when it corresponds to a filling construction area, a positive earth-moving volume is accumulated, respectively, to show the change in the earth volume between the first time point and the second time point in each construction area 130. The accumulated earth-moving volume [m 3 is derived.

[0032] And from the derived accumulated earth-moving volume [m 3 and the area of the construction area 130, by using the following calculation formula, the ground height variation value, which is the differential data of the ground height between the first time point and the second time point, can be obtained. That is, for the construction area 130 of interest, accumulated earth-moving volume [m 3 / area [m 2 =ground height variation value [m] is used, and differential data regarding the ground height can be obtained. In this way, the ground height estimation unit 204 estimates the ground height at the second time point by adding this ground height variation value to the ground height at the first time point of the construction area 130.

[0033] <Regarding the earth volume change rate> Here, the earth volume change rate will be explained. In the above description, the cutting volume, which is the amount of earth cut, and the filling volume, which is the amount of earth filled, were calculated assuming that they are equal to the earth-moving volume, which is the amount of earth transported. However, when formulating a more accurate earth-moving plan, the earth volume change rate must be considered. The earth and sand in the construction area 130 in the cutting area before construction (before excavation) is compacted and thus has a high density. However, after excavation, when it is loaded onto a transport vehicle or the like, the earth and sand is loosened and the density becomes small, and the volume becomes large. Also, after being transported to the construction area 130 in the filling area, filled, and then compacted, the density of the earth and sand becomes large again and the volume becomes small. Thus, even for the same earth and sand (earth-moving), the volume may be different, and it is necessary to correct the volume according to the state of the earth and sand.

[0034] The "in-situ soil volume" refers to the soil volume (excavated soil volume) in the state before excavation (soil cutting), which means the volume of the original ground. The "loosened soil volume" refers to the soil volume (hauled soil volume) during transportation in the state after excavation (soil cutting), which means the volume of the loosened soil and sand. The "compacted soil volume" refers to the soil volume (embankment volume) in the state where it has been compacted after embankment filling, which means the volume of the soil and sand that has been compacted again. Here, the loosening rate L and the compaction rate C, which are the soil volume change rates, are expressed as follows based on the in-situ soil volume. Loosening rate L = loosened soil volume [m 3 / in-situ soil volume [m 3 (the loosened soil volume divided by the in-situ soil volume) Compaction rate C = compacted soil volume [m 3 / in-situ soil volume [m 3 (the compacted soil volume divided by the in-situ soil volume) And the loosening rate L and the compaction rate C are used as the soil volume change rates when formulating the hauling plan.

[0035] Next, a calculation example of the soil volume change rate will be described. For example, assume that the loosening rate and the compaction rate of the soil and sand with an in-situ soil volume (excavated soil volume) of 100 [m 3 are loosening rate L = 1.20 and compaction rate C = 0.90, respectively. In this case, (A) the loosened soil volume (hauled soil volume) and (B) the compacted soil volume (embankment volume) can be calculated as follows. (A) Hauled soil volume = 100 [m 3 × 1.20 = 120 [m 3 (B) Embankment volume = 100 [m 3 × 0.90 = 90 [m 3

[0036] And in the hauling plan management device 100, since the soil volume change rate can be taken into account to calculate the excavated soil volume, embankment volume, and hauled soil volume, a more accurate soil volume change can be derived, and the ground elevation at the second time point can be estimated more accurately. When the soil volume change rate is taken into account, the ground elevation at the second time point in the excavation area 140 and the embankment area 150 can be estimated by the following calculation formula. ​​Ground elevation at the second point in the excavation area [m] = Ground elevation at the first point in the excavation area [m] + Cumulative earthwork volume [m 3 / loosening rate / area [m 2 Ground elevation at the second point in the embankment area [m] = Ground elevation at the first point in the embankment area [m] + Cumulative earthwork volume [m 3 / (loosening rate × compaction rate) / area [m 2 Note that since the loosening rate and compaction rate vary depending on the properties of the earth and sand in the construction area, for example, the operator inputs the loosening rate and compaction rate for each construction area in the excavation area in advance using a keyboard or the like. In this way, by taking into account the earth volume change rate, the ground elevation estimation unit 204 can more accurately estimate the ground elevation at the second point.

[0037] The estimated three-dimensional terrain data generation unit 206 generates the estimated three-dimensional terrain data for all or part of the construction target area at the second point using the ground elevation at the second point of each part of the construction area 130 estimated by the ground elevation estimation unit 204. That is, the estimated three-dimensional terrain data generation unit 206 assigns the estimated ground elevation data at the second point as height data to each area of the construction area data composed of two-dimensional plane data, and generates the estimated three-dimensional terrain data, which is three-dimensional solid data for restoring the terrain at the second point.

[0038] ​​The output control unit 207 controls the output of the generated estimated three-dimensional terrain data. For example, the output control unit 207 generates a three-dimensional model of the construction target area at the second time point from the generated estimated three-dimensional terrain data, and outputs and displays it on a display device such as a display. As a result, the user can visually grasp the terrain. In addition, since it is also possible to display the current terrain model 110 at the first time point, it is possible to display the current terrain model 110 at the first time point and the estimated three-dimensional model at the second time point side by side, or to display them transparently and superimposed. Furthermore, for example, by generating three-dimensional models at a plurality of second time points in time series, it is also possible to confirm the change in terrain in the construction target area according to the progress of construction. Alternatively, it may be output as a construction management table describing the cumulative earthwork volume and estimated ground height for each construction area at the second time point.

[0039] <Regarding the order of the first time point and the second time point> Here, in the earthwork plan management device 100, the second time point for estimating the ground height based on the earthwork data with respect to the ground height at the first time point may be a time point before or after the first time point. That is, when estimating the ground height at the second time point from the derived ground height change value, if the first time point is before the second time point, the ground height change value is added to the ground height at the first time point in the construction area 130, and if the first time point is after the second time point, the ground height change value is subtracted from the ground height at the first time point.

[0040] <Regarding a specific example of the pattern from the first time point to the second time point> Next, a specific example of estimating the ground height from the first time point to the second time point will be described. First, an example of estimating from the first time point (current) to the second time point (future) will be described ((1) to (4)).

[0041] (1) Before construction (first time point) → During construction (second time point): Planned earthwork data In the earthmoving data acquisition unit 203, by acquiring the planned earthmoving data, the ground height estimation unit 204 can estimate the ground height at any arbitrary time during construction, so that the terrain at any arbitrary time during construction can be estimated. In this way, since the terrain can be estimated from the ground height at the intermediate point of construction, for example, it can be utilized for the installation plan of the construction road used during construction. Also, since the height difference between adjacent areas of the construction area during the construction period can be confirmed in advance, safety measures can be executed in advance to ensure the safety of the workers.

[0042] (2) Before construction (first time point) → During construction (second time point): Actual earthmoving data In the earthmoving data acquisition unit 203, by acquiring the actual earthmoving data, the ground height estimation unit 204 can calculate the actual ground height at any arbitrary time during construction. In this way, since the actual ground height at any arbitrary time during construction can be calculated, the actual terrain at any arbitrary time can be reproduced, for example, on a display. Therefore, by acquiring the actual earthmoving data, the progress of the construction work at any arbitrary time can be confirmed. Also, each time, on-site surveying, photography using a drone, etc., and modeling are no longer required, and the approximate terrain at any arbitrary time can be easily confirmed, and it can be utilized for progress management, prior safety management, construction change plans, etc.

[0043] (3) During construction (first time point) → During construction (second time point): Planned earthmoving data For example, based on the terrain measured by on-site surveying or aerial photography using a drone, etc., during the construction of the construction target area, by using the subsequent planned earthmoving data, the ground height estimation unit 204 estimates the ground height at any arbitrary time, thereby enabling the estimation of the terrain at any arbitrary time. In this way, by estimating the subsequent terrain based on the terrain measured at the intermediate time point, it becomes possible to review the original plan, etc.

[0044] (4) During construction (first time point) → During construction (second time point): Actual earthmoving data Similarly to (2), in the earthmoving data acquisition unit 203, by acquiring the actual earthmoving data, the ground height estimation unit 204 can calculate the actual ground height at any arbitrary time during construction. At this time, the ground height at the first time point during construction can be obtained based on the terrain measured by on-site survey or aerial photography using a drone or the like during construction of the construction target area, similarly to (3), or can also be obtained based on the ground height calculated from the actual earthmoving data up to the first time point based on the terrain before construction. In this way, since the actual ground height at any arbitrary time during construction can be calculated, the actual terrain at any arbitrary time can be reproduced, for example, on a display. Therefore, by acquiring the actual earthmoving data, the progress of the construction work at any arbitrary time can be confirmed. In addition, the approximate terrain at any arbitrary time can be easily confirmed, and it can be utilized for progress management, prior safety management, construction change plans, and the like.

[0045] Next, an example of estimating from the current (first time point) to the past (second time point) will be described ((5) to (6)).

[0046] (5) Design terrain at completion (first time point) → During construction (second time point): Planned earthmoving data (retrograde) It becomes possible to simulate the terrain variation of restoring from the terrain at completion to the previous terrain. That is, since the ground height at a certain point in the past (any arbitrary time during construction) can be reproduced from the current time, the terrain of the construction target area at the same time point can be restored. In this way, when approaching the completion of the construction period, it may be advantageous to calculate the ground height at any arbitrary time during construction from the design terrain after completion in reverse, as the processing and calculation load in the earthmoving plan management device 100 are reduced. In formulating the earthmoving plan, for example, it becomes possible to formulate the plan based on the perspective of going back from the completion time point to before the start of construction, so the variations in the earthmoving plan formulation method in the case of having constraint conditions can be increased. Furthermore, for example, when effectively utilizing the road that will be put into use after completion as a construction road, based on the situation after completion, an earthmoving plan in the reverse direction (embankment → cutting) can be formulated, and the intermediate ground height and terrain can be estimated.

[0047] (6) Final terrain at completion (first point in time) → During construction (second point in time): Actual earthwork data (retrospective) It is possible to restore the terrain at any point during construction from the final terrain at completion. Thus, near the completion of the construction period, it is advantageous to calculate the ground elevation at any point during construction in reverse from the final terrain after completion, as this reduces the processing and calculation load on the earthwork planning management device 100. In addition, it is possible to reproduce the terrain variations as the terrain is restored from the terrain at completion to the previous terrain, or to confirm the terrain at any point during construction. If a problem occurred during the construction period, the terrain at that point can be reproduced, so information for problem solving can be provided.

[0048] Next, an example of the earthwork data table 301 will be described with reference to FIG. 3A. The earthwork data table 301 stores the construction time 311 such as the year, month, and day when earthwork occurs, the cut earth construction area ID 312, the fill earth construction area ID 313, and the earthwork volume 314. The cut earth construction area ID 312 is an identifier for identifying the construction area where cut earth construction is performed, and the fill earth construction area ID 313 is an identifier for identifying the construction area where fill earth construction is performed. Each time any one of the construction time, cut earth construction area ID, and fill earth construction area ID is different, a record is sequentially added.

[0049] Next, an example of the construction area table 302 will be described with reference to FIG. 3B. The construction area table 302 stores the construction area information 322, the cumulative earthwork volume 323, and the estimated ground elevation 324 in association with the construction area ID 321. The construction area ID 321 is an identifier for identifying the construction area and is associated with each area of the construction area on the construction area data. The construction area information 322 is the area [m 2 and the ground elevation [m] at the first point in time. The ground elevation is the height of the ground surface represented by elevation or altitude.

[0050] The cumulative earthwork volume 323 ([m 3 ) is data obtained by integrating the earthwork volume for each construction area from the first point in time to the second point in time, and the earthwork volume [m 3is the total. From the earth-moving data table 301, the earth-moving data during the construction period 311 between the first time point and the second time point is extracted. For each construction area, when the construction area ID 321 corresponds to the cutting construction area ID 312, the negative earth-moving volume is added to the cumulative earth-moving volume 323 of the filling construction area ID 313 when it corresponds to the filling construction area ID 313. Therefore, the cumulative earth-moving volume 323 ([m 3 ) is shown as a negative value in the case of a cutting area where earth and sand are transported out from the construction area, and is shown as a positive value in the case of a filling area where earth and sand are transported into the construction area.

[0051] The estimated ground height 324 ([m]) is the ground height at the second time point derived from the cumulative earth-moving volume 323 and the construction area information 322 of each construction area. The estimated ground height 324 is obtained by dividing the cumulative earth-moving volume 323 ([m 3 ) of each construction area in the construction area table 302 by the area [m 2 of the construction area information 322 to derive the variation amount of the ground height of each construction area from the first time point to the second time point, and adding it to the ground height of the construction area information 322 which is the ground height at the first time point to estimate the ground height at the second time point.

[0052] Referring to FIG. 4, the hardware configuration of the earthmoving plan management device 100 will be described. The CPU (Central Processing Unit) 410 is a processor for arithmetic control, and realizes each functional configuration of the earthmoving plan management device 100 in FIG. 2 by executing a program. The CPU 410 has a plurality of processors, and may execute different programs, modules, tasks, threads, etc. in parallel. The ROM (Read Only Memory) 420 stores fixed data such as initial data and programs, and other programs. Further, the network interface 430 communicates with other devices via a network. Note that the CPU 410 is not limited to one, and may be a plurality of CPUs, or may include a GPU (Graphics Processing Unit) for image processing. Also, the network interface 430 preferably has a CPU independent of the CPU 410 and writes or reads transmission / reception data to / from the area of the RAM (Random Access Memory) 440. Further, it is desirable to provide a DMAC (Direct Memory Access Controller) for transferring data between the RAM 440 and the storage 450 (not shown). Furthermore, the CPU 410 recognizes that data has been received or transferred to the RAM 440 and processes the data. Also, the CPU 410 prepares the processing result in the RAM 440, and subsequent transmission or transfer is left to the network interface 430 or the DMAC.

[0053] The RAM 440 is a random access memory that the CPU 410 uses as a work area for temporary storage. A storage area for storing data necessary for the implementation of this embodiment is secured in the RAM 440. The construction area data 441 is identification data, coordinate data, etc. for each area obtained by dividing the construction target area into a plurality of small areas. The construction area information 442 is data regarding the area and ground elevation of the construction area. The integrated earthmoving data 443 is data regarding the earthmoving volume from the first point in time to the second point in time. The estimated ground elevation data 444 is data of the estimated value of the ground elevation at the second point in time for each construction area. The ground elevation data 445 is data representing the ground elevation of all or part of the construction target area at an arbitrary point in time. The three-dimensional terrain data 446 is data indicating the three-dimensional terrain at the first point in time.

[0054] The transmission / reception data 447 is data transmitted and received via the network interface 430. Also, the RAM 440 has an application execution area 448 for executing various application modules.

[0055] Stored in the storage 450 are a database, various parameters, or the following data or programs necessary for the implementation of this embodiment. The storage 450 stores the earthmoving data table 301 and the construction area table 302. The earthmoving data table 301 is a table that manages the relationships such as the construction period 311, the cut construction area ID 312, and the fill construction area ID 313 shown in FIG. 3A. The construction area table 302 is a table that manages the relationships such as the construction area ID 321 and the construction area information 322 shown in FIG. 3B.

[0056] Storage 450 further stores a construction area data acquisition module 451, a construction area information acquisition module 452, an earthmoving data acquisition module 453, and a ground height estimation module 454. The construction area data acquisition module 451 is a module that acquires construction area data obtained by dividing a construction target area into a plurality of construction areas. The construction area information acquisition module 452 is a module that acquires construction area information including the area of each construction area and the ground height at a first time point. The earthmoving data acquisition module 453 is a module that acquires earthmoving data including the construction period, the construction area where cutting work is performed, the construction area where filling work is performed, and the amount of earthmoving. The ground height estimation module 454 is a module that estimates the ground height at a second time point for each construction area.

[0057] Storage 450 further stores an estimated three-dimensional terrain data generation module 455 and an output control module 456. The estimated three-dimensional terrain data generation module 455 is a module that generates estimated three-dimensional terrain data for all or part of the construction target area at an arbitrary time point (second time point). The output control module 456 is a module that controls the output of the generated estimated three-dimensional terrain data.

[0058] Storage 450 may further store a three-dimensional terrain data acquisition module 457 and an as-built ground height acquisition module 458. The three-dimensional terrain data acquisition module 457 is a module that acquires three-dimensional terrain data. The as-built ground height acquisition module 458 is a module that acquires the ground height at a first time point for each of the construction areas 130 by superimposing the three-dimensional terrain data and the construction area data.

[0059] These modules 451 to 458 are read into the application execution area 448 of the RAM 440 by the CPU 410 and executed. Further, the storage 450 stores a control program 459, and the control program 459 is a program for controlling the entire earthmoving plan management device 100.

[0060] The input / output interface 460 interfaces the input / output data with the input / output devices. A display unit 461 and an operation unit 462 are connected to the input / output interface 460. Further, a storage medium 464 may be connected to the input / output interface 460. Furthermore, a speaker 463 which is an audio output unit, a microphone (not shown) which is an audio input unit, or a GPS position determination unit (not shown) may be connected. Note that programs and data related to general functions and other realizable functions of the earthmoving plan management device 100 are not shown in the RAM 440 and the storage 450 shown in FIG. 4.

[0061] With reference to the flowcharts shown in FIGS. 5A to 5D, the processing procedure of the earthmoving plan management device 100 will be described. These flowcharts show that the CPU 410 in FIG. 4 executes using the RAM 440 to realize each functional configuration of the earthmoving plan management device 100 in FIG. 2.

[0062] First, with reference to FIG. 5A, the overall processing by the earthmoving plan management device 100 will be described.

[0063] In step S501, the earthmoving plan management device 100 acquires construction area information. It acquires construction area data (graphical data) set on a two-dimensional plan view, and associates with the construction area ID to acquire the area of the construction area and the ground height at the first point in time of the construction area, and stores them as a construction area table 302. Details will be described later.

[0064] In step S503, the earthmoving plan management device 100 acquires planned earthmoving data or actual earthmoving data and stores them as an earthmoving data table 301. The planned earthmoving data or the actual earthmoving data may be acquired as data from the outside, or may be acquired as input by the operator using a keyboard or the like on the screen of the earthmoving plan management device 100.

[0065] In step S505, the earthmoving plan management device 100 designates a second time point for which the estimated terrain is to be simulated. When it is desired to check the variation of the terrain according to the time axis, the first time (for example, at the start of construction, etc.) to be checked is designated. The second time point may be the same as the first time point. In this case, the estimated terrain is the same as the current situation (or design) 3D data at the first time point. The second time point is designated, for example, by an operator inputting it using a keyboard or the like on the screen of the earthmoving plan management device 100.

[0066] In step S507, the earthmoving plan management device 100 estimates the ground elevation at the second time point in each construction area at the second time point, and stores it in the construction area table 302 as the estimated ground elevation. Details will be described later.

[0067] In step S509, the earthmoving plan management device 100 determines whether the next second time point has been designated. If the next second time point has been designated (YES in step S509), the earthmoving plan management device 100 returns to step S505. When it is desired to check the continuous change situation of the terrain, move to the next second time point. For example, when checking a certain change every day or every week, etc., move the second time point at equal intervals, and calculate the estimated ground elevation of each construction area at each time point. When setting a plurality of second time points, for example, create the construction area table 302 for each different second time point.

[0068] If the next second time point has not been designated (NO in step S509), the earthmoving plan management device 100 proceeds to step S511. In step S511, from the estimated ground elevation at the second time point calculated for each of the construction areas, the estimated 3D terrain data at the second time point in the construction target area is generated, and by outputting it to a display device such as a display, it may be displayed on the screen as a three-dimensional model at the second time point, or output as a construction management table such as the integrated earthmoving volume and estimated ground elevation for each construction area. When a plurality of second time points are designated, the three-dimensional model generated from the estimated 3D terrain data for each of the plurality of second time points can be displayed on the screen according to the progress of the construction to check the change of the terrain.

[0069] Next, referring to FIG. 5B, the details of the process of acquiring the construction area information in step S501 will be described.

[0070] In step S521, the earthmoving plan management device 100 acquires construction area data (graphical data) on a two-dimensional plan view in which the construction target area is divided into a plurality of construction areas.

[0071] In step S523, the earthmoving plan management device 100 acquires the area of each construction area and stores it in the construction area table 302. The area of each construction area may be derived from the two-dimensional coordinates indicating the area of each construction area of the construction area data using the GIS function, or may be acquired as the attribute information of the construction area data (graphical data).

[0072] In step S525, the earthmoving plan management device 100 designates a first point in time at which the current ground height or the designed ground height of each construction area can be grasped, acquires the ground height of each construction area at the first point in time, and stores it in the construction area table 302. The first point in time is, for example, designated by an operator inputting it using a keyboard or the like on the screen of the earthmoving plan management device 100. The ground height of each construction area at the first point in time may be acquired as data from the outside, or may be acquired as the attribute information of the construction area data. Alternatively, the current terrain model 110 or the designed terrain model 120 at the first point in time may be acquired, and these ground heights may be derived. Details will be described later.

[0073] Next, referring to FIG. 5C, the details of the process of acquiring the ground height of each construction area at the first point in time in step S525 will be described.

[0074] In step S531, the earthmoving plan management device 100 acquires 3D terrain data indicating the 3D terrain of the construction target area at the first point in time. The 3D terrain data is either the current terrain model 110 or the designed terrain model 120.

[0075] In step S533, the earthmoving plan management device 100 superimposes the acquired 3D terrain data at the first time point and the construction area data. If the coordinate systems of the two are different, adjust them so that they overlap according to one of the plane coordinates.

[0076] In step S535, the earthmoving plan management device 100 derives the ground elevation at the first time point of each construction area from the elevation values of the 3D terrain data at the first time point included in the area of the construction area. If the terrain within the construction area is flat, use the elevation value within the area as the ground elevation as it is. If it is not flat, set a representative value such as the median or average value of the elevation values within the area as the ground elevation of the construction area. After the ground elevation of all construction areas is derived, store them in the construction area table 302 respectively.

[0077] Next, with reference to FIG. 5D, the details of the process of estimating the ground elevation at the second time point of each construction area in step S507 will be described.

[0078] In step S541, the earthmoving plan management device 100 extracts the earthmoving data generated between the first time point and the second time point from the planned earthmoving data or actual earthmoving data acquired in step S503.

[0079] In step S543, for each construction area, the earthmoving plan management device 100 extracts from the earthmoving data generated between the first time point and the second time point extracted in step S541 those for which the construction area is either a cut area or a fill area, and for the integrated earthmoving volume of each construction area, from the extracted earthmoving data, add a negative earthmoving volume for the cut target construction area and a positive earthmoving volume for the fill target construction area respectively, and update the value of the integrated earthmoving volume in the construction area table. Perform these processes for all construction areas with all the earthmoving data generated between the first time point and the second time point.

[0080] In step S545, the earthmoving plan management device 100 divides the integrated earthmoving volume of each construction area calculated by the area of each construction area, corrects it with the earth volume change rate as necessary, and calculates the ground height change value. By adding (subtracting) the calculated ground height change value to the ground height at the first time point, the ground height at the second time point is estimated and stored in the construction area table as the estimated ground height. When the estimated ground heights at the second time point for all construction areas are calculated, the earthmoving plan management device 100 ends the process of step S545.

[0081] According to the present embodiment, since the ground height of each construction area is estimated from the earthmoving data, the terrain at any time can be estimated by a simple method. In addition, when formulating an earthmoving plan, since the change in the terrain can be confirmed according to the progress of the planned earthmoving data, it is possible to formulate an efficient earthmoving plan according to the progress of the construction. Further, since the estimated three-dimensional terrain data at any time is generated, the three-dimensional terrain at any time can be visually confirmed.

[0082] [Second Embodiment] Next, the earthmoving plan management device 600 according to the second embodiment of the present invention will be described with reference to FIGS. 6 to 9. The earthmoving plan management device 600 according to the present embodiment is different from the first embodiment in that it has a progress calculation unit. Since the other configurations and operations are the same as those of the first embodiment, the same reference numerals are given to the same configurations and operations, and the detailed description thereof is omitted.

[0083] As shown in FIG. 6, the earthmoving plan management device 600 includes a progress calculation unit 601. The progress calculation unit 601 compares the planned integrated earthmoving volume, which is the integrated earthmoving volume of the planned earthmoving data between the first time point and the second time point, with the actual integrated earthmoving volume, which is the integrated earthmoving volume of the actual earthmoving data, in each of the construction areas 130, and calculates the progress of the construction.

[0084] That is, the progress calculation unit 601 integrates the soil volume change derived by the ground height estimation unit 204 using the planned soil transportation data at predetermined time intervals, and calculates the planned integrated soil transportation volume data, which is the soil volume change between the first time point and the second time point based on the planned soil transportation data. Similarly, the soil volume change derived by the ground height estimation unit 204 using the actual soil transportation data is integrated at predetermined time intervals, and the actual integrated soil transportation volume data, which is the soil volume change between the first time point and the second time point based on the actual soil transportation data, is calculated. The progress calculation unit 601 compares the actual integrated soil transportation volume data and the planned integrated soil transportation volume data from the first time point to the second time point, and calculates the progress of the construction. The progress is calculated, for example, as progress [%] = actual integrated soil transportation volume [m 3 / planned integrated soil transportation volume [m 3 . When there is no delay in the construction and it progresses as planned, it can be represented as 100%, and as the construction is delayed, the numbers such as 90%, 80%... decrease. Also, when the construction progresses more than planned, the numbers such as 110%, 120%... can increase according to the progress of the construction.

[0085] FIG. 7 is a diagram showing an example of the progress table 701 included in the soil transportation plan management device 600. The progress table 701 stores, for each construction area, the planned integrated soil transportation volume 711 calculated by integrating the planned soil transportation data from the first time point to the second time point in association with the construction area ID 321, the actual integrated soil transportation volume 712 calculated by integrating the actual soil transportation data, and the progress 713. The planned soil transportation data is data related to the soil transportation plan planned before the construction of the entire or a part of the construction target area. Also, the actual soil transportation data is data related to the actual soil transportation performance for the entire or a part of the construction target area. Then, the soil transportation plan management device 600 calculates the progress of each construction area at the second time point by dividing the actual integrated soil transportation volume 712 by the planned integrated soil transportation volume 711.

[0086] Referring to FIG. 8, the hardware configuration of the earthwork plan management device 600 will be described. The RAM 840 is a random access memory used by the CPU 410 as a temporary storage work area. A storage area for storing data necessary for realizing the present embodiment is secured in the RAM 840. The planned integrated earthwork volume data 841 is obtained by integrating the planned earthwork data between the first time point and the second time point, and the actual integrated earthwork volume data 842 is obtained by integrating the actual earthwork data actually carried out between the first time point and the second time point.

[0087] The storage 850 stores a database, various parameters, or the following data or programs necessary for realizing the present embodiment. The storage 850 stores the progress table 701. The progress table 701 is a table that manages the relationship between the construction area ID 321, the planned integrated earthwork volume 711, the actual integrated earthwork volume 712, and the progress 713 shown in FIG. 7.

[0088] The storage 850 further stores a progress calculation module 851. The progress calculation module 851 is a module that calculates the progress 713 of the construction by comparing the planned integrated earthwork volume 711 calculated by integrating the planned earthwork data between the first time point and the second time point with the actual integrated earthwork volume 712 calculated by integrating the actual earthwork data between the first time point and the second time point.

[0089] FIGS. 9A and 9B are flowcharts for explaining the processing procedure of the earthwork plan management device 600. This flowchart shows that the CPU 410 in FIG. 8 executes using the RAM 840 to realize each functional configuration of the earthwork plan management device 600 in FIG. 6.

[0090] First, referring to FIG. 9A, the overall processing by the earthwork plan management device 600 will be described.

[0091] In step S501, the earthwork plan management device 100 acquires construction area information in the same manner as in the first embodiment.

[0092] In step S901, the earthmoving plan management device 600 acquires planned earthmoving data and actual earthmoving data. The planned earthmoving data or the actual earthmoving data may be acquired as data from the outside, or may be acquired as data input by an operator using a keyboard or the like on the screen of the earthmoving plan management device 600.

[0093] In step S505, the earthmoving plan management device 600 designates a second time point for which the progress is to be calculated. When it is desired to confirm the transition of the progress according to the time axis, the first time (for example, at the start of construction, etc.) to be confirmed is designated. The second time point should be a time point after the first time point. The designation of the second time point is performed, for example, by an operator inputting using a keyboard or the like on the screen of the earthmoving plan management device 600.

[0094] In step S903, the earthmoving plan management device 600 calculates the progress of each construction area at the second time point and stores it in the progress table 701. Details will be described later.

[0095] In step S509, the earthmoving plan management device 600 determines whether the next second time point has been designated. If the next second time point has been designated (YES in step S509), the earthmoving plan management device 600 returns to step S505. When it is desired to confirm the continuous transition of the progress, move to the next second time point. For example, when confirming a certain transition every day or every week, etc., move the second time point at equal intervals and calculate the progress of each construction area at each time point. When setting a plurality of second time points, for example, create a progress table 701 for each different second time point.

[0096] If the next second time point has not been designated (NO in step S509), the earthmoving plan management device 600 proceeds to step S905. In step S905, when the progress at the second time point has been calculated, the earthmoving plan management device 600 may output the calculation result and output it as a construction management table of the planned cumulative earthmoving volume, the actual cumulative earthmoving volume, and the progress for each construction area.

[0097] Next, referring to FIG. 9B, the details of the process for calculating the progress of each construction area in step S903 will be described.

[0098] In step S911, the earthmoving plan management device 600 extracts the earthmoving data generated between the first time point and the second time point from the planned earthmoving data and the actual earthmoving data acquired in step S901, respectively.

[0099] In step S913, the earthmoving plan management device 600 calculates the planned cumulative earthmoving volume and the actual cumulative earthmoving volume for each construction area. First, from each of the earthmoving data extracted in step S911, those for which the construction area is either a cut area or a fill area are extracted. For the planned cumulative earthmoving volume and the actual cumulative earthmoving volume of each construction area, a negative earthmoving volume is added for the construction area targeted for cutting and a positive earthmoving volume is added for the construction area targeted for filling, respectively, from each of the extracted earthmoving data. These processes are performed for all construction areas using all the earthmoving data generated between the first time point and the second time point.

[0100] In step S915, the earthmoving plan management device 600 divides the calculated actual cumulative earthmoving volume at the second time point for each construction area by the planned cumulative earthmoving volume, calculates the progress at the second time point, and stores it in the progress table 701. When the progress at the second time point for all construction areas has been calculated, the earthmoving plan management device 600 ends the process of step S915.

[0101] According to the present embodiment, by acquiring and integrating the planned earthmoving data and the actual earthmoving data, the progress of construction for each construction area can be calculated, so that it becomes possible to easily grasp the detailed progress status of the entire construction site, and the earthmoving plan can be reviewed when there is a delay in construction. Also, in the earthmoving plan management device 100, it is also possible to reproduce the past terrain and ground elevation from the current terrain. As a result, when there is a discrepancy between the construction change or simulation and the construction results, it becomes possible to easily confirm at which point the discrepancy occurred, and it also becomes possible to re-formulate the earthmoving plan.

[0102] [Other Embodiments] The present invention has been described with reference to the embodiments, but the present invention is not limited to the above embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention. Also, a system or device formed by combining the separate features included in each embodiment in any manner is also included in the scope of the present invention.

[0103] In addition, the present invention may be applied to a system composed of a plurality of devices or to a single device. Furthermore, the present invention is also applicable when an information processing program for realizing the functions of the embodiments is supplied directly or remotely to a system or a device. Therefore, in order to realize the functions of the present invention by a computer, a program installed in the computer, a medium storing the program, or a WWW (World Wide Web) server for downloading the program are also included in the scope of the present invention. In particular, at least a non-transitory computer readable medium storing a program for causing a computer to execute the processing steps included in the above-described embodiments is included in the scope of the present invention.

Claims

1. In a two-dimensional plan view of a construction target area, a construction area data acquisition unit that acquires construction area data obtained by dividing the construction target area into a plurality of construction areas; A construction area information acquisition unit that acquires construction area information including the area of each of the plurality of construction areas and the ground elevation at a first point in time; At least a plurality of construction periods in the construction of the construction target area, the construction area where excavation work is performed, the construction area where embankment work is performed, and the amount of earthwork transported from the construction area where the excavation work is performed during the construction period to the construction area where the embankment work is performed are shown every time either the construction period or the construction area is different. An earthwork data acquisition unit that acquires earthwork data; Using the acquired earthwork data, the earthwork volume of each of the construction areas between the first point in time and a second point in time which is at least one of the points before and after the first point in time is integrated to derive a change in earthwork volume, and the change in earthwork volume of each of the obtained construction areas is divided by the area of each of the obtained construction areas, and based on the ground elevation at the first point in time, a ground elevation estimation unit that estimates the ground elevation of each of the construction areas at the second point in time; Comprising: An earthwork plan management device, wherein the construction area where the excavation work is performed and the construction area where the embankment work is performed are areas obtained by dividing the construction area in a mesh shape.

2. The earthwork data includes at least one of planned earthwork data planned before all or part of the construction target area is constructed and actual earthwork data obtained by actually performing construction on all or part of the construction target area. The ground elevation estimation unit: Estimates the planned ground elevation at the second point in time using the planned earthwork data; Estimates the actual ground elevation at the second point in time using the actual earthwork data. The earthwork plan management device according to Claim 1.

3. The earthwork plan management device according to Claim 2, further comprising a progress calculation unit that calculates the progress of construction by comparing the integrated result of the change in earthwork volume between the first point in time and the second point in time in each of the construction areas with the integrated result derived from the planned earthwork data and the integrated result derived from the actual earthwork data.

4. An estimated three-dimensional terrain data generation unit that generates estimated three-dimensional terrain data for all or part of the construction target area at the second time point, using the ground heights of the respective construction areas estimated by the ground height estimation unit; An output control unit that controls the output of the generated estimated three-dimensional terrain data; The earthwork plan management device according to any one of claims 1 to 3, further comprising:

5. A three-dimensional terrain data acquisition unit that acquires three-dimensional terrain data indicating the three-dimensional terrain of the construction target area at the first time point; A ground height derivation unit that derives the ground height of each construction area at the first time point by superimposing the acquired three-dimensional terrain data and the construction area data of the construction target area; The earthwork plan management device according to any one of claims 1 to 4, further comprising:

6. A construction area data acquisition step in which a construction area data acquisition unit acquires construction area data obtained by dividing the construction target area into a plurality of construction areas in a two-dimensional plan view of the construction target area; A construction area information acquisition step in which a construction area information acquisition unit acquires construction area information including the area of each of the plurality of construction areas and the ground height at the first time point; An earthwork data acquisition step in which an earthwork data acquisition unit acquires earthwork data indicating, for each time when at least one of the plurality of construction times in the construction of the construction target area, the construction area where cutting work is performed, the construction area where filling work is performed, and the earthwork volume transported from the construction area where the cutting work is performed at the construction time to the construction area where the filling work is performed, for each time when either the construction time or the construction area is different; A ground height estimation step in which a ground height estimation unit uses the acquired earthwork data to integrate the earthwork volume of each construction area between the first time point and a second time point which is at least one of the time points before and after the first time point to derive a soil volume change, and based on the value obtained by dividing the derived soil volume change of each construction area by the area of each construction area for which the soil volume change has been acquired and the ground height at the first time point, estimates the ground height of each construction area at the second time point; Including An earthwork plan management method, wherein the construction area where the cutting work is performed and the construction area where the filling work is performed are areas obtained by dividing the construction area in a mesh shape.

7. In the two-dimensional plan view of the construction target area, a construction area data acquisition step of acquiring construction area data obtained by dividing the construction target area into a plurality of construction areas; A construction area information acquisition step of acquiring construction area information including the area of each of the plurality of construction areas and the ground elevation at a first point in time; At least a plurality of construction periods in the construction of the construction target area, a construction area where cutting construction is performed, a construction area where filling construction is performed, and the amount of earthwork transported from the construction area where the cutting construction is performed to the construction area where the filling construction is performed during the construction period, and the earthwork data showing this for each time when either the construction period or the construction area is different; Using the obtained earthwork data, integrating the amount of earthwork for each of the construction areas between the first point in time and a second point in time which is at least one of the points in time before and after the first point in time to derive a change in the amount of earthwork, and based on the value obtained by dividing the derived change in the amount of earthwork for each of the construction areas by the area of each of the construction areas for which the change in the amount of earthwork was obtained and the ground elevation at the first point in time, a ground elevation estimation step of estimating the ground elevation at the second point in time for each of the construction areas; Causing a computer to execute; An earthwork plan management program in which the construction area where the cutting construction is performed and the construction area where the filling construction is performed are areas obtained by dividing the construction area in a mesh shape.

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