Information processing device and information processing method

Abstract

To provide an information processing device and an information processing method capable of sequentially grasping the state of a construction target more accurately.SOLUTION: An information processing device comprises a model creation unit that creates a three-dimensional geological model of a construction target based on geological information of the construction target obtained before construction of the construction target, and a model updating unit that updates the three-dimensional geological model based on exploration information, which is information about the construction target explored during construction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an information processing device and an information processing method. [Background technology]

[0002] In mountain tunnel construction, it is important to accurately grasp the condition of the surrounding ground, including the area ahead of the tunnel face, in order to ensure the safety of construction in unstable areas and to implement countermeasure work accurately and without delay. To predict changes in the ground condition, surveys such as advanced boring, seismic reflection surveys, or drilling logging are carried out depending on the on-site situation. Furthermore, attempts have been made to predict changes in the ground condition in three dimensions in order to use the survey results to predict the appearance of weak layers and to implement countermeasure work (for example, Patent Document 1 and Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-176845 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-179725 Summary of the Invention [Problem to be solved by the invention]

[0004] However, although attempts have been made to visualize the ground conditions in three dimensions, the evaluation method is often based on a single survey result, and the results and their interpretation are ambiguous, with differences depending on the experience of the interpreter. Furthermore, when there are results from multiple survey items, knowledge and experience are required to make a comprehensive judgment. Three-dimensional geological models created by comprehensively examining various survey results are useful for accurately understanding the ground conditions, but until now, no method has been considered for updating geological models to immediately reflect various survey results during construction.

[0005] The present invention has been made in consideration of the above circumstances, and its purpose is to provide an information processing device and an information processing method that can more accurately grasp the condition of a construction target each time an inspection is carried out. [Means for solving the problem]

[0006] (1) One aspect of the present invention is an information processing device that includes a model creation unit that creates a three-dimensional geological model of a construction target based on geological information about the construction target obtained before the construction of the construction target, and a model update unit that updates the three-dimensional geological model based on exploration information, which is information about the construction target explored during construction.

[0007] (2) In the information processing device of (1) above, the three-dimensional geological model is a voxel model represented by voxels to which attribute information of the geological layer is assigned, and the model update unit may sequentially update one or more pieces of attribute information within a predetermined range of the voxel model based on the exploration information.

[0008] (3) In the information processing device of (1) or (2), the exploration information may be information obtained by tunnel natural ground exploration, which is exploration of the natural ground ahead of the tunnel face and its surrounding area.

[0009] (4) In the information processing device of (3) above, the exploration information may include at least one of information regarding elastic wave velocity, rock facies classification, physical property classification by strength test, and elastic wave reflection surface obtained by the tunnel natural ground exploration.

[0010] (5) In any of the information processing devices described in (1) to (4), the exploration information includes information on elastic wave velocity obtained by advanced drilling or blasting elastic wave exploration, rock facies classification by advanced drilling, physical property classification by strength test, and information on elastic wave reflection surfaces, and the model update unit may update at least the position of the stratum boundary or the boundary between hard and soft rock mass in the three-dimensional geological model based on at least one or more pieces of information from the exploration information, including information on elastic wave velocity obtained by advanced drilling or blasting elastic wave exploration, rock facies classification by advanced drilling, physical property classification by strength test, and information on elastic wave reflection surfaces.

[0011] (6) In any of the information processing devices described in (1) to (4), the exploration information includes elastic wave velocity obtained by advanced drilling or blasting elastic wave exploration, rock facies classification by advanced drilling, information on physical property classification by strength testing, and one or more reflection surfaces of elastic waves obtained by elastic wave exploration, and the model update unit may update the stratum boundary or the boundary surface between hard and soft rock mass in the three-dimensional geological model based on the exploration information.

[0012] (7) In the information processing device of (6) above, the model update unit may include a boundary position identification unit that identifies the position of a stratum boundary or a boundary between hard and soft rock in the three-dimensional geological model based on at least one of information on elastic wave velocity obtained by the advanced drilling or blasting elastic wave exploration, information on rock facies classification by advanced drilling, information on physical property classification by strength testing, and information on elastic wave reflection surfaces; a reflection surface selection unit that selects the reflection surface closest to the boundary position identified by the boundary position identification unit from among the multiple reflection surfaces obtained by the elastic wave exploration; a boundary surface identification unit that identifies a new boundary surface on the three-dimensional geological model by moving the reflection surface selected by the reflection surface selection unit to the boundary position; and an update unit that updates the three-dimensional geological model based on the boundary surface identified by the boundary surface identification unit.

[0013] (8) In the information processing device of (5) above, the model update unit may identify the position of a stratum boundary or a boundary between hard and soft rock in the three-dimensional geological model based on the exploration information, and update the three-dimensional geological model based on the identified boundary position and information on the strike and dip of the boundary surface obtained from the geological information, or information on the boundary surface between hard and soft rock and stratum obtained from face observation of the excavated area.

[0014] (9) One aspect of the present invention includes a display step of displaying a three-dimensional geological model of the construction target on a display unit based on geological information of the construction target obtained before the construction of the construction target; a model update step of updating the three-dimensional geological model displayed on the display unit based on exploration information, which is information about the construction target explored during construction; and a display step of displaying the three-dimensional geological model updated by the model update step on a display unit, wherein the exploration information is input into the three-dimensional geological model updated by the model update step, and the exploration information can be displayed by the display step. [Effects of the Invention]

[0015] As described above, according to the present invention, the state of the object to be worked on can be grasped more accurately and successively. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a diagram illustrating an example of a schematic configuration of an information processing system according to an embodiment of the present invention. [Figure 2] 1 is a diagram illustrating an example of a schematic configuration of an information processing device according to an embodiment of the present invention. [Figure 3] FIG. 2 is a diagram illustrating an example of a block diagram of a model update unit according to the present embodiment. [Figure 4] FIG. 10 is a diagram illustrating an example of a method for updating a three-dimensional geological model in the model update unit according to the present embodiment. [Figure 5] FIG. 2 is a diagram showing the flow of a method for updating a three-dimensional geological model according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] An information processing apparatus and an information processing method according to the present embodiment will be described below with reference to the drawings. The information processing apparatus and the information processing method according to the present embodiment relate to, for example, creating and updating a three-dimensional geological model.

[0018] 1 is a diagram showing an example of a schematic configuration of an information processing system 1 including an information processing device 20 according to this embodiment. The information processing system 1 of this embodiment is a system for more accurately, simply, and sequentially grasping the condition of the natural ground (construction target) that is the target of tunnel construction when performing tunnel construction. However, the information processing system 1 is not limited to tunnel construction and can be applied to construction of all types of work.

[0019] The information processing system 1 includes, for example, an exploration system 10 and one or more information processing devices 20.

[0020] The exploration system 10 explores the condition of the natural ground (hereinafter referred to as "natural ground condition"), which is an example of a construction target. For example, the exploration system 10 includes one or more exploration devices. The exploration system 10 is connected to an information processing device 20 via a communication network N. The exploration system 10 transmits exploration information, which is the explored natural ground condition, to the information processing device 20 via the communication network N. The exploration system 10 explores the natural ground condition of the natural ground when the natural ground is being constructed by an excavator or the like. In other words, the exploration system 10 explores the natural ground condition during tunnel construction, not before tunnel construction, and transmits the exploration information to the information processing device 20 successively after each exploration.

[0021] The communication network N may be a wireless communication transmission path (e.g., wireless LAN), a wired communication transmission path, or a combination of wireless communication and wired communication transmission paths. The communication network N may be a mobile communication network such as a mobile phone network, a wireless packet communication network, the Internet, a dedicated line, or a combination thereof. For example, the communication network NW may use a low-power wide-area network (LPWAN), or may use short-range wireless communication standards such as ZigBee (registered trademark), WiFi (registered trademark), or Bluetooth (registered trademark). Note that WiFi communication and wired communication inside a tunnel, and data transfer from a measuring device to a PC via a USB cable, etc., are also included in communications via the communication network N.

[0022] For example, the exploration system 10 explores the ground conditions during construction by tunnel ground exploration, which is an exploration of the ground ahead of the tunnel face and its surrounding area. The tunnel ground exploration may be advanced drilling, an elastic wave exploration method, or both. The elastic wave exploration method may be refraction elastic wave exploration, reflection elastic wave exploration, or both. The tunnel ground exploration may also be borehole logging. The elastic wave exploration method may use drilling vibrations as a vibration source and utilize the phenomenon in which elastic waves propagating through the ground are reflected at points where the rock properties (e.g., rock hardness) change, and estimate the position of a reflecting surface in the ground from the elastic waves observed inside the tunnel. In this case, the vibration source may be, for example, impact vibrations from a breaker. The elastic wave exploration method may be, for example, tunnel seismic prediction (TSP) or horizontal seismic profiling (HSP).

[0023] The exploration information obtained by the exploration system 10 is information obtained by tunnel natural ground exploration, and includes, for example, at least one of elastic wave velocity distribution and elastic wave reflection surfaces. Here, advanced drilling can obtain information on the elastic wave velocity distribution within the linear hole of advanced drilling. From this elastic wave velocity distribution, the boundary position from hard to soft or soft to hard can be identified. Elastic wave exploration (reflection elastic wave exploration) can obtain information on one or more elastic wave reflection surfaces. A reflection surface is a three-dimensional image of the boundary surface from hard to soft or soft to hard. In addition, the elastic wave velocity distribution may be obtained from blasting elastic wave exploration. Furthermore, information on lithology classification may be obtained by advanced drilling, or information on physical property classification may be obtained by strength testing. In other words, information obtained by tunnel natural ground exploration may include at least one of information on elastic wave velocity, lithology classification, physical property classification by strength testing, and elastic wave reflection surfaces obtained by tunnel natural ground exploration.

[0024] 2 is a diagram showing an example of a schematic configuration of the information processing device 20 according to this embodiment. As shown in FIG. 2, the information processing device 20 includes, for example, a communication unit 21, a control unit 22, and a display unit 23.

[0025] The communication unit 21 transmits and receives information to and from the exploration system 10 via the communication network N. The communication unit 21 successively receives exploration information from the exploration system 10 via the communication network N during tunnel construction.

[0026] The display unit 23 is an example of an output device that outputs various information processed by the information processing device 20. The display unit 23 is, for example, a display device that displays information, such as a display. The output device that outputs information is not limited to the display unit 23 and may be any device. For example, the output device may be another information processing device connected via a network (wired or wireless) such as the Internet.

[0027] The control unit 22 includes, for example, a model creation unit 30, a model update unit 31, and a display control unit 32. These components are realized by, for example, a hardware processor such as a CPU (Central Processing Unit) executing a program (software). Furthermore, some or all of these components may be realized by hardware (including circuitry) such as an LSI (Large Scale Integrated circuit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a GPU (Graphics Processing Unit), or may be realized by a combination of software and hardware. The program may be stored in advance in a storage device (a storage device having a non-transitory storage medium) such as an HDD (Hard Disk Drive) or flash memory, or may be stored in a removable storage medium (a non-transitory storage medium) such as a DVD or CD-ROM, and installed in the storage device by inserting the storage medium into a drive device. The storage device may be configured, for example, by a HDD, a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), a ROM (Read Only Memory), or a RAM (Random Access Memory).

[0028] The model creation unit 30 creates a three-dimensional geological model of the construction target based on geological information of the construction target obtained before tunnel construction is carried out on the natural ground, which is an example of the construction target. This geological information is, for example, information obtained in a preliminary survey of the tunnel construction. This geological information is, for example, data from seismic exploration or boring data. Hereinafter, geological information of the construction target, such as the natural ground, obtained before tunnel construction is referred to as "preliminary survey data." The model creation unit 30 may acquire the preliminary survey data via the communication network N, or may import the preliminary survey data by other methods.

[0029] The model creation unit 30 creates a three-dimensional geological model of the natural ground, which is the construction target, based on the preliminary survey data. This three-dimensional geological model is, for example, a voxel model expressed using voxels that contain attribute information of geological strata. Building information modeling (BIM) or construction information modeling (CIM) can be used to create this three-dimensional geological model. Thus, the three-dimensional geological model is created by linking topographical information (three-dimensional information) of the natural ground with attribute information of the geological structure. The attribute information is information about the geology, including, for example, information indicating the geology (e.g., lithology classification and hardness / softness classification), elastic wave velocity, the presence or absence of boundary locations, and the strike and dip of boundary surfaces. For example, the elastic wave velocity may be classified into multiple levels, such as a first level when the elastic wave velocity is within a first range and a second level when the elastic wave velocity is within a second range different from the first range, and the information on the classified levels may be used as attribute information. Hereinafter, the three-dimensional geological model created by the model creation unit 30 based on the preliminary survey data may be referred to as an "initial model."

[0030] The model update unit 31 updates the three-dimensional geological model based on exploration information, which is information on the natural ground conditions explored during construction. For example, the model update unit 31 sequentially updates one or more pieces of attribute information within a predetermined range of a voxel model, which is the three-dimensional geological model, based on the exploration information. That is, the model update unit 31 may update the entire three-dimensional geological model, or may extract only a certain range (predetermined range) H of the three-dimensional geological model as an update target and update the attribute information associated with voxels within the extracted update target.

[0031] For example, when the exploration information obtained via the communication unit 21 includes information on elastic wave velocities obtained by advanced drilling, the model update unit 31 updates at least the geological boundary positions in the three-dimensional geological model based on the elastic wave velocities obtained by the advanced drilling. For example, when the exploration information obtained via the communication unit 21 includes elastic wave velocities obtained by advanced drilling and one or more reflection surfaces of elastic waves obtained by elastic wave exploration, the model update unit 31 updates the geological boundary surfaces in the three-dimensional geological model based on the exploration information. For example, the model update unit 31 updates at least the stratum boundaries or the boundaries between hard and soft natural ground in the three-dimensional geological model based on at least one or more pieces of information from the exploration information, including elastic wave velocities obtained by advanced drilling or blasting elastic wave exploration, lithology classification by advanced drilling, physical property classification by strength testing, and elastic wave reflection surface information. If the exploration information includes elastic wave velocity obtained by advanced drilling or blasting elastic wave exploration, rock facies classification by advanced drilling, information on physical property classification by strength testing, and one or more reflection surfaces of elastic waves obtained by elastic wave exploration, the model update unit 31 may update the stratum boundary or the boundary surface between hard and soft rock mass in the three-dimensional geological model based on this exploration information.

[0032] The model update unit 31 may identify the position of the stratum boundary or the boundary between hard and soft ground in the three-dimensional geological model based on the exploration information, and update the three-dimensional geological model based on the identified boundary position and information on the strike and dip of the boundary surface obtained from geological information (data such as longitudinal sections from geological surveys before construction) or information on the boundary surface between hard and soft ground obtained from face observations of the excavated area.

[0033] When updating the three-dimensional geological model, the model update unit 31 may input exploration information during construction onto the three-dimensional geological model, which allows the display unit 23 to comprehensively visualize various types of exploration information.

[0034] The display control unit 32 displays the three-dimensional geological model created by the model creation unit 30 on the display unit 23. Furthermore, when the three-dimensional geological model is updated by the model update unit 31, the display control unit 32 displays the updated three-dimensional geological model on the display unit 23. For example, when the three-dimensional geological model is updated by the model update unit 31, the display control unit 32 updates the three-dimensional geological model displayed on the display unit 23 to the three-dimensional geological model updated by the model update unit 31. As a result, the three-dimensional geological model displayed on the display unit 23 is successively updated based on the exploration information, and is updated to a more accurate model. Therefore, construction workers can carry out tunnel construction while checking the successively updated three-dimensional geological model on the display unit 23. Furthermore, the display control unit 32 can comprehensively visualize various exploration information by displaying the exploration information input on the three-dimensional geological model on the display unit 23.

[0035] An example of each functional unit of the model update unit 31 according to this embodiment will be described below with reference to Fig. 3. Fig. 3 is a block diagram of the model update unit 31 according to this embodiment.

[0036] The model update unit 31 includes, for example, a boundary position identification unit 40, a reflecting surface selection unit 41, a boundary surface identification unit 42, and an update unit 43. Each functional unit will be described with reference to Fig. 4. Fig. 4 illustrates an example of a method for updating a three-dimensional geological model in the model update unit 31. Note that, for convenience of explanation, Fig. 4 depicts the information in two dimensions, but in reality it is three-dimensional information.

[0037] First, the model creation unit 30 creates an initial model, which is a three-dimensional geological model of the ground, based on the preliminary survey data (Fig. 4(a)). Fig. 4(a) is, for example, a vertical cross section of the ground created based on the preliminary survey data before the excavation of a tunnel, and is divided into geology A (for example, hard / soft classification A) and geology B (for example, hard / soft classification B). Note that the initial model is created, for example, based on the rock facies classification from the pre-construction survey, and the ground classification corresponding to the elastic wave velocity distribution and the support pattern of the initial design.

[0038] The model update unit 31 extracts only a predetermined range H of the initial model as the update target (Figure 4(b)). This is because if the update target is wide, it will take a considerable amount of time to update the model, so by limiting the update target to a certain range rather than the entire initial model, the time required to update the model can be reduced. In Figure 4(b), attribute information indicating geology A is associated with each voxel of the initial model extracted by the model update unit 31.

[0039] The predetermined range H can be set arbitrarily, for example, as a predetermined area in the excavation direction from the excavation location. For example, the predetermined range H may be set according to the range that can be explored by the exploration system 10, and may be specified in advance so as not to be set beyond the range that can be explored. For example, when information on the exploration technique to be used by the exploration system 10 is input to the information processing device 20, the information processing device 20 may read out the predetermined range H according to that information from a storage unit (not shown) and set it.

[0040] Next, the boundary position identifying unit 40 identifies a boundary position P of the geological layer in the three-dimensional geological model based on the exploration information, for example, the elastic wave velocity obtained by advanced drilling. For example, the boundary position identifying unit 40 receives exploration information obtained during tunnel construction from the exploration system 10, and defines (identifies) the geological boundary position P based on the received exploration information, such as lithology and elastic wave velocity obtained by advanced drilling ( FIG. 4( c)). The example shown in FIG. 4( c) illustrates a state in which the presence of geology C has been discovered based on information such as lithology and elastic wave velocity obtained by advanced drilling within a predetermined range H, which was defined in the initial model as containing only geology A. When the boundary position identifying unit 40 detects the presence of geology C, which is different from geology A, based on information such as lithology and elastic wave velocity obtained by advanced drilling, the boundary position identifying unit 40 identifies the boundary position P between geology C and geology A. As an example, the boundary position identifying unit 40 may identify the point at which the elastic wave velocity changes by more than a predetermined threshold (e.g., 1000 m / sec) as the boundary position P.

[0041] Here, the information from advanced drilling is information about the inside of a linear hole. Therefore, even if the boundary position identifying unit 40 can identify the boundary position P between geology C and geology A, it may be difficult to identify the boundary surface between geology C and geology A. Therefore, if the exploration information includes information about the reflection surface of the elastic wave, the model updating unit 31 identifies the boundary surface between geology C and geology A by further using the information about the reflection surface.

[0042] For example, the boundary position identification unit 40 may identify the position of a stratum boundary or a boundary between hard and soft rock mass in a three-dimensional geological model based on at least one of the following information: information on elastic wave velocity obtained by advanced drilling or blasting elastic wave exploration; information on rock facies classification by advanced drilling; information on physical property classification by strength testing; and information on elastic wave reflection surfaces.

[0043] The reflecting surface selection unit 41 extracts information on a plurality of reflecting surfaces obtained by the elastic wave exploration from the exploration information. From the extracted information on the plurality of reflecting surfaces, the reflecting surface selection unit 41 selects, for example, the reflecting surface closest to the boundary position P identified by the boundary position identification unit 40. However, the method of selecting a reflecting surface in the reflecting surface selection unit 41 is not limited to this method, and it is sufficient if one reflecting surface can be selected from the plurality of reflecting surfaces.

[0044] The boundary surface identifying unit 42 identifies a new boundary surface on the three-dimensional geological model by moving the reflection surface selected by the reflection surface selecting unit 41 to the boundary position P ( FIG. 4( d) ). For example, the boundary surface identifying unit 42 acquires information on the strike and dip of the reflection surface selected by the reflection surface selecting unit 41, and identifies the boundary surface between the geology C and the geology A by applying the acquired strike and dip to the position of the boundary position P. For example, as shown in FIG. 4( d ), if the reflection surface selecting unit 41 selects the reflection surface S that is closest to the boundary position P from among the multiple reflection surfaces, the boundary surface identifying unit 42 identifies the boundary surface S′ between the geology C and the geology A by shifting the center of gravity of the reflection surface S to the boundary position P. In this way, the boundary surface identifying unit 42 may identify the boundary surface S′ by moving the reflection surface S so that it intersects with the boundary position P.

[0045] The update unit 43 updates the attribute information associated with the voxels within the predetermined range H based on the information on the boundary surface S' identified by the boundary surface identification unit 42 (FIG. 4(e)). For example, the update unit 43 updates the attribute information of the voxels corresponding to the geology C to the attribute information of the geology C based on the boundary surface S' of the three-dimensional geological model.

[0046] Here, the exploration information may not include information on the reflection surface of the elastic wave. In this case, the reflection surface selection unit 41 cannot select the reflection surface closest to the boundary position P identified by the boundary position identification unit 40. Therefore, in such a case, the model update unit 31 may update the boundary surface in the 3D geological model based on information on the strike and dip of the boundary surface K (the boundary surface between geology A and geology B in the example shown in FIG. 4) obtained from the preliminary survey data. For example, the reflection surface selection unit 41 may identify the boundary surface S' between geology C and geology A by applying information on the strike and dip of the boundary surface K between geology A and geology B to the boundary position P. Alternatively, the boundary surface S' between geology C and geology A may be identified by applying information on the strike and dip of a typical stratum boundary or a hard / soft boundary obtained from face observation results in the excavated area to the boundary position P.

[0047] An example of the flow of a method for updating a three-dimensional geological model in the information processing device 20 will be described below with reference to FIG.

[0048] The information processing device 20 creates an initial model, which is a three-dimensional geological model of the natural ground, based on preliminary survey data from a preliminary survey conducted before tunnel construction (step S101). When tunnel construction is carried out by an excavator or the like, the exploration system 10 explores the natural ground conditions during tunnel construction by tunnel natural ground exploration, and sequentially transmits the exploration information obtained by the exploration to the information processing device 20.

[0049] When the information processing device 20 receives the exploration information (step S102), it extracts an update target from the initial model (step S103). The information processing device 20 identifies a boundary position P based on the exploration information (step S104). When the information processing device 20 identifies a boundary position P (for example, the position of a hard / soft boundary), it identifies a geological boundary surface including the boundary position P based on information including the exploration information (step S105). When the information processing device 20 identifies the boundary surface, it updates the three-dimensional model to be updated to reflect the identified boundary surface in the three-dimensional model (step S106). Note that if the boundary position P is not identified in step S104, steps S105 and S106 may be omitted. In the processing of step S106, the information processing device 20 may input the exploration information into the updated three-dimensional geological model.

[0050] The information processing device 20 displays the three-dimensional geological model updated in step S106 on the display unit 23 (step S107). At this time, the information processing device 20 may also display the exploration information input to the three-dimensional geological model on the display unit 23. This allows more information to be visualized together, contributing to more accurate updating of the geological model, such as stratum boundaries and hard-soft boundaries.

[0051] After updating the update target, the information processing device 20 determines whether to terminate the update process of the three-dimensional geological model (step S108). For example, when the information processing device 20 receives a signal indicating the termination of the update process from an external device, when the power of the information processing device 20 is turned off, or when the application executing the update process is stopped, the information processing device 20 determines to terminate the update process and stops the update process. On the other hand, when the information processing device 20 determines to continue the update process, it returns to step S102 and executes the processes of steps S102 to S106 on the three-dimensional model updated in the previous step S106. As a result, the three-dimensional model is sequentially updated based on the exploration information acquired during tunnel construction. Here, sequential updating means, for example, updating each time exploration information is acquired. When new exploration information is acquired, the three-dimensional model is updated based on the exploration information. The updated three-dimensional geological model may be stored in a non-volatile memory in the information processing device 20 each time it is updated. In this case, the updated three-dimensional geological model may be saved in chronological order or may be overwritten.

[0052] Although an embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and includes designs within the scope of the gist of the present invention.

[0053] In this embodiment, the information processing device 20 creates a three-dimensional geological model of the construction target based on geological information (preliminary survey data) of the construction target obtained before the construction of the construction target, and updates the three-dimensional geological model based on exploration information of the construction target explored during construction.

[0054] With this configuration, the condition of the construction target, such as the natural ground, can be grasped more accurately, easily and successively.

[0055] Note that all or part of the information processing device 20 described above may be implemented by a computer. In this case, the computer may include a processor such as a CPU or GPU and a computer-readable recording medium. A program for implementing all or part of the functions of the information processing device 20 on a computer may be recorded on the computer-readable recording medium, and the program may be read and executed by the processor. Here, "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into computer systems. Furthermore, "computer-readable recording medium" may also include devices that dynamically store programs for a short period of time, such as communication lines used when transmitting programs via networks such as the Internet or telephone lines, or devices that store programs for a fixed period of time, such as volatile memory within computer systems that serve as servers or clients in such cases. Furthermore, the program may be for implementing part of the functions described above, or may be capable of implementing the functions in combination with a program already stored in the computer system, or may be implemented using a programmable logic device such as an FPGA.

[0056] Furthermore, the term "unit" used in the specification means a unit that processes at least one function or operation, which may be embodied as hardware or software, or as a combination of hardware and software. [Explanation of symbols]

[0057] 1...information processing system, 10...exploration system, 20...information processing device, 21...communication unit, 22...control unit, 23...display unit, 30...model creation unit, 31...model update unit, 32...display control unit, 40...boundary position identification unit, 41...reflection surface selection unit, 42...boundary surface identification unit, 43...update unit

Claims

1. a model creation unit that creates a three-dimensional geological model of the construction object based on geological information of the construction object obtained before construction of the construction object; a model update unit that updates the three-dimensional geological model based on exploration information, which is information about the construction target that has been explored during construction; Equipped with the three-dimensional geological model is a voxel model expressed by voxels to which attribute information of geological layers is assigned; the model update unit sequentially updates one or more pieces of attribute information in a predetermined range of the voxel model based on the exploration information; The exploration information is information obtained by tunnel natural ground exploration, which is exploration of the natural ground in front of the tunnel face and its surrounding area, The exploration information includes all of the information obtained by the tunnel natural ground exploration, including elastic wave velocity, rock facies classification, physical property classification by strength test, and information regarding the elastic wave reflection surface.

2. The exploration information includes information on elastic wave velocity obtained by advanced drilling or blasting elastic wave exploration, rock facies classification by advanced drilling, physical property classification by strength test, and information on elastic wave reflection surface, The model update unit updates at least the position of a stratum boundary or a boundary between hard and soft natural ground in the three-dimensional geological model based on at least one of the exploration information, including the elastic wave velocity obtained by the advanced drilling or blasting elastic wave exploration, the rock facies classification by advanced drilling, the information on the physical property classification, and the information on the elastic wave reflection surface. The information processing device according to claim 1 .

3. The exploration information includes elastic wave velocity obtained by advanced drilling or blasting elastic wave exploration, rock facies classification by advanced drilling, information on physical property classification by strength test, and one or more reflection surfaces of elastic waves obtained by elastic wave exploration, the model update unit updates a stratum boundary or a boundary surface between hard and soft natural ground in the three-dimensional geological model based on the exploration information. The information processing device according to claim 1 .

4. The model update unit a boundary position identifying unit that identifies the position of a stratum boundary or a boundary between hard and soft natural ground in the three-dimensional geological model based on at least one of information on elastic wave velocity obtained by the advanced drilling or blasting elastic wave exploration, information on rock facies classification by advanced drilling, information on physical property classification by strength testing, and information on elastic wave reflection surfaces; and a reflection surface selection unit that selects, from among the plurality of reflection surfaces obtained by the elastic wave exploration, the reflection surface that is closest to the boundary position identified by the boundary position identification unit; a boundary surface identification unit that identifies a new boundary surface on the three-dimensional geological model by moving the reflection surface selected by the reflection surface selection unit to the boundary position; an updating unit that updates the three-dimensional geological model based on the boundary surface identified by the boundary surface identifying unit; The information processing device according to claim 3 , comprising:

5. The model update unit identifies the position of a stratum boundary or a boundary between hard and soft rock in the three-dimensional geological model based on the exploration information, and updates the three-dimensional geological model based on the identified boundary position, information on the strike and dip of the boundary surface obtained from the geological information, or information on the boundary surface between hard and soft rock and stratum obtained from face observation of the excavated area. The information processing device according to claim 2 .

6. a display step of displaying a three-dimensional geological model of the construction object on a display unit based on geological information of the construction object obtained before construction of the construction object; a model updating step of updating the three-dimensional geological model displayed on the display unit based on exploration information, which is information on the construction target explored during construction; a display step of displaying the three-dimensional geological model updated by the model update step on a display unit; Including, the exploration information is input to the three-dimensional geological model updated by the model updating step, and the exploration information can be displayed by the displaying step; the three-dimensional geological model is a voxel model expressed by voxels to which attribute information of geological layers is assigned; In the model updating step, one or more pieces of attribute information in a predetermined range of the voxel model are sequentially updated based on the exploration information; The exploration information is information obtained by tunnel natural ground exploration, which is exploration of the natural ground in front of the tunnel face and its surrounding area, An information processing method in which the exploration information includes all of the information obtained by the tunnel natural ground exploration, including elastic wave velocity, rock facies classification, physical property classification by strength test, and information regarding the elastic wave reflection surface.

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