River evaluation support device, river evaluation support method, and river evaluation support system

Abstract

To provide appropriate evaluation support to a worker who evaluates a river even when an evaluation target river is a river that has never been evaluated before or even when a past evaluation history cannot be used, such as if there was a significant change in conditions due to a disaster or the like.SOLUTION: The present disclosure includes a history database that stores a past evaluation result of a river, a river attribute database that stores river attribute information indicating features of the river, a similar river selection unit that selects a similar river with a high similarity to the evaluation target river, an evaluation support information generation unit that generates evaluation support information based on the past evaluation result of the similar river, and an evaluation support information display unit that displays the evaluation support information.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a technology for supporting river evaluation. [Background technology]

[0002] River maintenance work includes grasping the river's condition (inspection and patrol) and river maintenance measures (maintenance and improvement). In the inspection and patrol work, the necessity of repairs is evaluated for the river itself, such as the riverbed, and for incidental facilities, such as levees. In the maintenance and improvement work, measures such as repair work and cleaning are actually carried out for the areas that need repairs found during the inspection and patrol work, and then it is evaluated whether the measures have been properly carried out. Since there are no specific standards that are unified nationwide as evaluation criteria for these evaluation tasks, it is difficult for inexperienced or inexperienced people to perform these evaluations on their own. Patent Document 1 proposes a method of supporting the work by displaying historical data of past evaluations of the river to be evaluated to the worker. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-49199 A Summary of the Invention [Problem to be solved by the invention]

[0004] If there is no history of past evaluations of the river to be evaluated, or if the shape of the river or its associated facilities has changed due to a disaster, the historical data cannot be used as support information as in Patent Document 1.

[0005] Furthermore, when past data for the river being evaluated is unavailable, even if one attempts to use past data for rivers not being evaluated as support information, for example, evaluating whether a river's levees are meeting their performance requirements must be done taking into account the shape and flow rate of the river, and past data for rivers not being evaluated that have significantly different shapes, flow rates, etc. is inappropriate as support information.

[0006] The present disclosure has been made in consideration of the above, and aims to provide evaluation support to workers evaluating rivers even in cases where the river to be evaluated has never been evaluated before, or where past evaluation history cannot be used, such as when the river's condition has changed significantly due to a disaster or the like. [Means for solving the problem]

[0007] The river evaluation support device according to the present disclosure includes a history database that stores past evaluation results of rivers, a river attribute database that stores river attribute information that indicates characteristics of rivers, a similar river selection unit that selects similar rivers that are highly similar to the evaluation target river based on the river attribute information, and a similar river selection unit that selects similar rivers that are highly similar to the evaluation target river based on the river attribute information. Includes evaluation target, evaluation content, and evaluation value The evaluation support information generating section generates evaluation support information based on the evaluation result, and the evaluation support information display section displays the evaluation support information.

[0008] The river evaluation support method according to the present disclosure includes the steps of: storing past evaluation results of a river in a history database; storing river attribute information indicating characteristics of the river in a river attribute database; selecting a similar river that is highly similar to the evaluation target river based on the river attribute information; Includes evaluation target, evaluation content, and evaluation value The method includes the steps of creating evaluation support information based on the evaluation result, and displaying the evaluation support information. Effect of the Invention

[0009] According to the present disclosure, even when the past evaluation history of the river to be evaluated is unavailable, evaluation support can be provided to the worker who is evaluating the river to be evaluated. [Brief description of the drawings]

[0010] [Figure 1] 1 is a block diagram showing a river evaluation support device according to a first embodiment. [Diagram 2] FIG. 4 is a diagram showing an example of past evaluation results stored in the history database according to the first embodiment. [Diagram 3] 4] FIG. 4 is a diagram showing an example of river attribute information stored in the river attribute database according to the first embodiment. [Figure 4] 4 is a flow chart showing an overview of a process performed by a similar river selection unit in the first embodiment to select a similar river. FIG. [Diagram 5] FIG. 4 is a diagram showing an example of similarity calculation by the similar river selection unit according to the first embodiment; [Figure 6] FIG. 2 is a diagram showing an example of a similar river using the similar river determination criteria according to the first embodiment. [Figure 7] 4] FIG. 4 is a diagram showing a specific example of information stored in the river attribute database according to the first embodiment. [Figure 8] FIG. 4 is a diagram showing a specific example of calculation of a similarity according to the first embodiment. [Figure 9] FIG. 2 is a diagram showing a specific example of selection of a similar river according to the first embodiment. [Figure 10] FIG. 2 is a diagram showing an example of river attributes when a river is divided into sections according to the first embodiment. [Figure 11] FIG. 2 is a diagram showing an example of the creation of evaluation support information according to the first embodiment. [Figure 12] FIG. 11 is a diagram showing an example of evaluation support information displayed to a worker according to the first embodiment. [Figure 13] FIG. 11 is a diagram showing an example of evaluation support information displayed to a worker in the first embodiment in the case of an abnormality. [Figure 14] FIG. 11 is a diagram showing an example of a case where evaluation support information displayed to a worker according to the first embodiment is a past evaluation result. [Figure 15] 1 is a block diagram showing a river evaluation support system according to a first embodiment. [Figure 16] 1 is a hardware configuration diagram of a river evaluation support device according to a first embodiment. [Figure 17] FIG. 11 is a block diagram showing a river evaluation support device according to a second embodiment. [Figure 18] FIG. 11 is a diagram showing an example of an evaluation result before anonymization according to the second embodiment. [Figure 19] FIG. 11 is a diagram showing an example of an evaluation result after anonymization according to the second embodiment. [Figure 20] FIG. 11 is a block diagram showing a river evaluation support device according to a third embodiment. [Figure 21] FIG. 11 is a diagram showing an example of evaluation training information which is the evaluation support information according to the third embodiment. [Figure 22] FIG. 13 is a diagram showing an example of evaluation training information displayed to a trainee in the third embodiment. [Figure 23] FIG. 13 is a diagram showing an example of an evaluation training result displayed to a trainee in the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] First embodiment 1 is a block diagram showing a river evaluation support device 10 according to the embodiment 1. The river evaluation support device 10 includes a history database 101, a river attribute database 102, a similar river selection unit 103, an evaluation support information creation unit 104, an evaluation support information display unit 105, and an evaluation result input unit 109.

[0012] 2 is a diagram showing an example of past evaluation results stored in the history database 101. The history database 101 stores past evaluation work information and evaluation results for one or more multiple rivers. The evaluation work information is information related to the evaluation work, such as location information of the location where the evaluation was performed and the date and time of the evaluation. The location information of the location where the evaluation was performed is information specifying the location where the evaluation was performed, such as the name of a landmark such as a water gate, the distance from the landmark name, and latitude and longitude information obtained by GNSS.

[0013] The evaluation results include evaluation values ​​of the areas that are the subject of evaluation in inspection and repair work, supplementary information, and the like. The evaluation subject is, for example, the river itself, such as levees and riverbeds, and river incidental facilities, such as culverts and bridges. Information saved as the evaluation subject may include, as supplementary information, images of the evaluation subject at the time of evaluation and comments from workers. Images of the river may be linked information, and there are no limitations on how they are stored.

[0014] The evaluation value may be, for example, whether or not repair work is necessary, whether or not cleaning is necessary, etc. The evaluation value may be expressed in three levels, A, B, and C, or may be expressed as a number of points out of a maximum of 10 points, and is not limited as long as it is information indicating an evaluation.

[0015] Furthermore, the history database 101 may store the evaluation contents as the evaluation results. For example, the evaluation contents are the contents of the evaluation of cracks, corrosion, damage, etc. If the evaluation object is a "levee", the evaluation contents are "corrosion", and the evaluation value is "B", it can be seen that corrosion of the levee has progressed to some extent. In this way, the evaluation results specify the evaluation of what places of the river to be evaluated are in what state. The evaluation results are information evaluating the state of the river.

[0016] Here, when an operator inputs the evaluation results, there is a problem that it is difficult to judge what the evaluation value is for the part to be evaluated, and in what state. It is particularly difficult to judge when the operator is a newcomer or when the river to be evaluated is a new river. Therefore, the present disclosure supports the operator to smoothly evaluate the river to be evaluated by displaying the evaluation results of similar rivers on a terminal or the like used by the operator for evaluation.

[0017] 3 is a diagram showing an example of river attribute information stored in the river attribute database 102. The river attribute database 102 stores river attribute information of rivers whose evaluation results are stored in the history database 101. The river attribute information is information that represents the characteristics of a river, such as gradient, precipitation in the river basin, river water level during floods, surrounding facilities (dams, sluice gates, culverts, etc.), maximum flow rate, minimum flow rate, average flow rate, difference between maximum flow rate and minimum flow rate, flow velocity, surrounding topography (alluvial fan, delta, etc.), river basin area, river width, water depth, river length, curvature, etc.

[0018] The similar river selection unit 103 uses the river attribute information stored in the river attribute database 102 to select rivers similar to the river to be evaluated.

[0019] 4 is a flow diagram showing an outline of the process of selecting a similar river by the similar river selection unit 103. In step S401, the similar river selection unit 103 first acquires river attribute information of the river to be evaluated from the river attribute database 102 (step S401).

[0020] The river to be evaluated may be determined by receiving information specifying which river to evaluate from the operator, or information specifying the river may be received from a river evaluation plan or the like, and the method of specification is not limited. In this embodiment, the operator inputs information specifying the river to be evaluated through the evaluation result input unit 109, and the input information is input from the evaluation result input unit 109 to the similar river selection unit 103.

[0021] Next, the similar river selection unit 103 calculates the similarity between the evaluation target river, which is the river to be evaluated, and each similar candidate river based on the similarity determination formula (step S402).

[0022] Here, the similar candidate river refers to a river other than the evaluation target river that is registered in the river attribute database 102. Also, the similarity determination formula is a definition formula for calculating the similarity between the evaluation target river and the similar candidate river. The similarity determination formula is a formula for calculating the distance between the evaluation target river and the similar candidate river, and can be arbitrarily determined by the worker or the work manager, such as Euclidean distance or Manhattan distance.

[0023] When the Euclidean distance between river attribute 1, river attribute 2, ..., river attribute n (n is an integer) is used as the similarity judgment formula, the similarity X between the evaluation target river A (where the value of river attribute 1 is a1, the value of river attribute 2 is a2 ..., the value of river attribute n is an) and similar candidate river B (where the value of river attribute 1 is b1, the value of river attribute 2 is b2, ..., the value of river attribute n is bn) is calculated as shown in Formula 1.

[0024]

number

[0025] Fig. 5 is a diagram showing an example of similarity calculation by the similar river selection unit 103. More specifically, Fig. 5 is a diagram showing an outline of the processing contents of step S402. In Fig. 5, the Euclidean distance between the drainage basin area, average gradient, and average flow rate is used as the similarity determination formula. The similar river selection unit 103 selects rivers with small Euclidean distances between river attribute information as similar rivers.

[0026] Therefore, the evaluation target river A (basin area: a1 [km 2 ], average slope: a2, average flow rate: a3 [m 3 / s]) and similar candidate river B (basin area: b1 [km 2 ], average gradient: b2, average flow rate: b3[m 3 / s]) is calculated as shown in Equation 2. In addition, the similarity Y between the evaluation target river A and the similar candidate river C (basin area: c1 [km 2 ], average slope: c2, average flow rate: c3[m 3 The similarity Z of [i.e., / s] is calculated as shown in Equation 3.

[0027]

number

[0028]

number

[0029] Next, in step S402, the similar river selection unit 103 selects similar rivers with high similarity. More specifically, for each calculated similarity, the similar river selection unit 103 selects a river whose similarity satisfies a similar river determination criterion as a similar river (step S402). The similar river determination criterion is a criterion used to determine similar rivers, and can be arbitrarily determined by the operator or the operation manager.

[0030] Fig. 6 is a diagram showing an example of similar rivers selected by calculating the similarity with River A and using the similar river determination criteria. If the similarity with River A is as shown in Fig. 6 and the similar river determination criteria are set to the similar candidate rivers with the highest similarity, that is, the top three rivers with the shortest Euclidean distance with the evaluation target river, the similar rivers to River A are Rivers C, F, and H.

[0031] The process from step S401 to step S402 of the similar river selection unit 103 will be described using a concrete example.

[0032] Fig. 7 is a diagram showing a specific example of information stored in the river attribute database 102. The river attribute database 102 is as shown in Fig. 7, the similarity judgment formula is the Euclidean distance between the drainage basin area (i=1), the average gradient (i=2), and the average flow rate (i=3), and the similar river judgment criterion is "high similarity, i.e., the top three with the shortest Euclidean distance." Equation 4 expresses the similarity W in this case.

[0033] Fig. 8 is a diagram showing a specific example of calculation of the similarity of each river. From Fig. 7 and formula 4, the similarity of each river registered in the river attribute database 102 is calculated as shown in the "Similarity with River A" column in Fig. 8.

[0034] FIG. 9 is a diagram showing a specific example of the selection of similar rivers. When the rivers are arranged in order of similarity, they appear as shown in FIG. 9. Then, based on the similar river determination criteria, the top three rivers are selected as similar rivers. As can be seen from the shaded areas in FIG. 9, the rivers selected in this example are "River G," "River E," and "River B," in order of similarity.

[0035]

number

[0036] FIG. 10 is a diagram showing an example of river attribute information when a river is divided into sections. In the example of FIG. 10, the river is divided into an upstream, midstream, and downstream, but this is not limited thereto, and the division may be made by the length of the river or by the degree of distribution, and the division method is not limited thereto. The river attribute information may be information showing the characteristics of each section of the river. In other words, the similarity of the river may be calculated for the entire river from upstream to downstream in accordance with the operation of the management organization, or the similarity of a part of the river section may be calculated.

[0037] Specifically, River A is 400 km long from upstream to downstream, but since the section to be inspected this time is the 400 m section from water gate a1 to water gate a2 in the midstream of River A, it is also possible to calculate the similarity between the river attributes of the 400 m section from water gate a1 to water gate a2 of River A (midstream) and the river attributes of each section of the similar candidate rivers divided into 400 m intervals (Figure 10). This is an overview of the processing of the similar river selection unit 103.

[0038] The evaluation support information creation unit 104 creates evaluation support information by combining the past evaluation results of the river to be evaluated and the past evaluation results of the similar rivers selected by the similar river selection unit 103 from the history database 101. The evaluation support information is information that supports the worker when evaluating the river to be evaluated, and is information that indicates what evaluations have been made of similar rivers in the past, etc.

[0039] Fig. 11 is a diagram showing an example of evaluation support information created by the evaluation support information creating unit 104. As shown in Fig. 11, the evaluation results to be combined here may be evaluation contents and evaluation values, or may be a combination of evaluation targets and evaluation images, and are not limited. The evaluation support information may be information that supports the input of evaluations by workers, and there is no limitation on the way in which evaluation results are combined.

[0040] 12 is a diagram showing an example of evaluation support information displayed to a worker by the evaluation support information display unit 105. The evaluation support information may include a wide variety of information for evaluating a river, such as an image of the river and an evaluation value for each evaluation item. The evaluation support information display unit 105 displays the evaluation support information created by the evaluation support information creation unit 104 to a worker who performs river evaluation.

[0041] The evaluation result input unit 109 accepts the evaluation results input by the worker. The evaluation results are input through an interface. Specifically, the interface is a notebook PC or tablet terminal, a mouse, keyboard, touch panel, microphone, or other device equipped with these. In addition, the evaluation result input unit 109 may provide input tools such as a form for inputting the evaluation results, a form for inputting remarks as supplementary information, and a form for attaching images in order to input the evaluation results of the river to be evaluated.

[0042] Fig. 13 is a diagram showing an example of the evaluation support information displayed to the worker in the case of a deformation. This is an example in which a list of evaluation contents of levees of similar rivers is displayed as evaluation support information when there is a deformation in the levees but it is not clear what classification it falls into. In Fig. 13, the evaluation target is the levees, the evaluation contents are classifications of deformation, and the corresponding evaluation values ​​are displayed.

[0043] Fig. 14 is a diagram showing an example of the evaluation support information displayed to the worker as past evaluation results. This is an example in which, when there are past inspection results for the inspection target river, the results are summarized in chronological order and displayed as evaluation support information.

[0044] While referring to the evaluation support information displayed in this way, the worker performs the evaluation work of the river to be evaluated. The results of the evaluation work (evaluation results of the river to be evaluated) are stored in the history database 101 via the evaluation result input unit 109.

[0045] In addition, the river evaluation support device 10 can also be implemented as a river evaluation support system 100 by implementing functions other than the evaluation support information display unit 105 and the evaluation result input unit 109 on a server on the cloud.

[0046] 15 is a configuration diagram of the river evaluation support system 100. When implemented as the river evaluation support system 100, an operator transmits evaluation target river identification data, which is information for identifying an evaluation target river, from an operating terminal 107 to an evaluation support information creation device 106 implemented on the cloud. An input is received by a data input unit 110.

[0047] The work terminal 107 is a device such as a notebook PC or a tablet terminal that is equipped with a display for image output and a mouse, keyboard, touch panel, microphone, etc. for input. The evaluation target river identification data is information that can identify the river, such as the name of the river to be evaluated and the location information of the river.

[0048] The evaluation support information creation device 106 internally calculates the degree of similarity and creates evaluation support information using the evaluation results of rivers similar to the river to be evaluated. Then, the evaluation support information creation device 106 transmits the created evaluation support information to the work terminal 107 via the evaluation support information transmission unit 108. The work terminal 107 displays the evaluation support information related to the river to be evaluated. The evaluation worker uses the work terminal 107 to input the evaluation results while referring to the evaluation support information. The work terminal 107 transmits the evaluation results to the evaluation support information creation device 106. The evaluation results are input from the data input unit 110. In this manner, the river evaluation support device 10 can be implemented as a river evaluation support system 100.

[0049] As described above, the river evaluation support device 10 of embodiment 1 comprises a history database 101 that stores past evaluation results of rivers, a river attribute database 102 that stores river attribute information, a similar river selection unit 103 that calculates the similarity between the river to be evaluated and rivers not to be evaluated using the river attribute information and selects rivers similar to the river to be evaluated, an evaluation support information creation unit 104 that creates evaluation support information from the past evaluation results of the river to be evaluated and the past evaluation results of rivers similar to the river to be evaluated, an evaluation support information display unit 105 that displays the evaluation support information to the operator, and an evaluation result input unit 109 that inputs the evaluation results of the river to be evaluated.

[0050] With this configuration, the river evaluation support device 10 can appropriately support the worker in the river evaluation work by displaying the past evaluation results of the evaluation target river and the past evaluation results of rivers similar to the evaluation target river as evaluation support information. Therefore, even those who are inexperienced or have little experience in evaluation work can appropriately perform the evaluation work.

[0051] In addition, the river evaluation support device 10 allows multiple evaluators to share the evaluation results by referring to past evaluation results of rivers similar to the river to be evaluated. This makes it possible to eliminate discrepancies in evaluation standards between evaluators and rivers.

[0052] 16 is a hardware configuration diagram of the river evaluation support device 10. The river evaluation support device 10 comprises an input interface 401, a calculation device 402 such as a CPU (Central Processing Unit), a storage device 403, and an output interface 404. The interface will be hereinafter abbreviated as IF.

[0053] The history database 101, the river attribute database 102, etc. are stored in the storage device 403, and the functions of the similar river selection unit 103, the evaluation support information creation unit 104, etc. are realized by the calculation device 402 executing a program.

[0054] Data such as the evaluation results and information identifying the river to be evaluated are input from the input IF 401. The input may be received directly from the user or from an external data server, and there is no restriction on the input source. The output IF 404 outputs the created evaluation support information, etc.

[0055] The IFs are wired ports such as cable ports, USB ports, direct connection ports, and wireless network ports. The storage device 403 is a storage medium such as an HDD, SSD, or flash memory.

[0056] Embodiment 2 17 is a diagram showing a river evaluation support device 20 according to the second embodiment. The river evaluation support device 20 differs from the first embodiment in that an evaluation result anonymization unit 201 is provided. In the following, components having the same functions as those in the first embodiment are denoted by the same reference numerals and their explanations are omitted, and the following description will focus on the differences from the river evaluation support device 10 of the first embodiment.

[0057] The river evaluation support device 20 can be used by a single river management organization or jointly by multiple river management organizations. In the case of use by multiple organizations, when a river K managed by Kanagawa Prefecture is the river to be evaluated, a river S managed by Shizuoka Prefecture is selected as a similar river, and the evaluation result of the river S is used as evaluation support information when evaluating the river K.

[0058] Here, the river evaluation results stored in the history database 101 may include attribute information of the worker and information unique to the river management organization such as a prefecture, city, town, or village. The attribute information of the worker specifically includes the worker's first and last name, age, years of service, and company. The history database 101 includes attribute information of the worker who inputted the evaluation results. The information unique to the river management organization specifically includes the name of the local government, the name of the company that received the repair work, the amount of the repair work order, the timing of the repair work, and the status of the repair work.

[0059] There are cases where this attribute information and unique information cannot be disclosed to other workers or river management organizations, such as when an individual worker can be identified by his / her name or the company he / she belongs to, or when repair work is planned for a river or river-related facility managed by a river management organization but no public bids have been made.

[0060] If such attribute information of the worker or information unique to the river management organization is included in the history database 101, there are cases in which the river evaluation support device 20 cannot be used jointly by a plurality of river management organizations.

[0061] Therefore, in embodiment 2, the evaluation result anonymization unit 201 anonymizes information from the river evaluation results stored in the history database 101 that cannot be disclosed to evaluation workers of other river management organizations that jointly use the river evaluation support device 20 (hereinafter referred to as confidential history information), and creates evaluation support information.

[0062] The evaluation result anonymization unit 201 passes the past evaluation results of rivers similar to the river to be evaluated from the history database 101 to the evaluation support information creation unit 104. However, before passing the results, the evaluation result anonymization unit 201 anonymizes predefined confidential history information. The confidential history information is information from the past evaluation results stored in the history database 101 that should be kept confidential from other river management organizations, and can be defined for each river management organization that uses the river evaluation support device 20.

[0063] The evaluation result anonymization unit 201 anonymizes the evaluation result by summing multiple pieces of secret history information defined by multiple river management organizations. The specific anonymization method may be any method such as deleting the secret history information, replacing it with a symbol, or masking characters. The evaluation result anonymization unit 201 anonymizes part of the attribute information that cannot be disclosed to the evaluator and the unique information of the river management organization.

[0064] Fig. 18 is a diagram showing an example of evaluation results before anonymization. The processing of the evaluation result anonymization unit 201 will be explained using a specific example. It is assumed that the evaluation results stored in the history database 101 are as shown in Fig. 18, and that river management organization 1 (manages rivers A and B), river management organization 2 (manages river C), and river management organization 3 (manages river D) use the river evaluation support device 20.

[0065] If the confidential history information of river management organization 1 is "worker name" and "affiliated company", the confidential history information of river management organization 2 is "worker name", and the confidential history information of river management organization 3 is "worker age" and "affiliated company", the evaluation result anonymization unit 201 anonymizes the three items "worker name", "affiliated company", and "worker age", which are the sum of the confidential history information of each river management organization. If the anonymization method is to delete "worker name", mask "affiliated company", and replace "worker age" with its age in 10-year increments, the evaluation result after anonymization will be as shown in Figure 19.

[0066] 19 is a diagram showing an example of the evaluation result after anonymization. As described above, the river evaluation support device 20 makes it possible to refer to the evaluation support information while concealing information that is desired to be kept secret from other river management organizations other than the own organization among the evaluation results stored in the history database 101. The evaluation support information creation unit 104 creates evaluation support information based on the anonymized attribute information, information unique to the river management organization, etc., and the evaluation result.

[0067] With this configuration, when multiple river management organizations use this device, they can create river evaluation support information while anonymizing any information from the evaluation results that they wish to keep confidential from others.

[0068] Third embodiment In the first and second embodiments, a configuration for supporting the actual evaluation work of a river has been described. However, beginners, such as new workers, generally undergo training in a task before actually performing the task, when the task is performed for the first time. Therefore, in the third embodiment, a configuration for supporting training in the evaluation work of a river is described.

[0069] 20 is a diagram showing a river evaluation support device 30 according to the third embodiment. The river evaluation support device 30 differs from the first embodiment in the processing of an evaluation support information creation unit 301 and the processing of an evaluation support information display unit 302. In the following, components having the same functions as those in the first embodiment are given the same reference numerals and their explanations are omitted, and the explanation will focus on the points that are different from the river evaluation support device 10 of the first embodiment.

[0070] The evaluation support information creation unit 301 creates evaluation training information from information on rivers similar to the evaluation training target rivers selected by the similar river selection unit 103 and information stored in the history database 101. The evaluation training information created here refers to information obtained by deleting some of the evaluation results from the evaluation support information of embodiment 1. The evaluation training information is evaluation support information obtained by deleting some of the evaluation results stored in the history database 101. An example of deleting evaluation values ​​will be described here.

[0071] Fig. 21 is an example of evaluation training information which is the evaluation support information created by the evaluation support information creating unit 301 in embodiment 3. In Fig. 21, the columns of deleted evaluation values ​​are shaded.

[0072] The evaluation support information display unit 302 displays the evaluation support information (evaluation training information) created by the evaluation support information creation unit 301. An example of the evaluation support information (evaluation training information) that the evaluation support information display unit 302 displays to the person receiving training in the evaluation task is shown in FIG.

[0073] FIG. 22 is a diagram showing an example of evaluation support information (evaluation training information) displayed to a trainee in the third embodiment. A person receiving training in the evaluation work performs evaluation training using the evaluation support information display unit 302 and the evaluation result input unit 109. The evaluation result input unit 109 accepts input of the evaluation result, here the evaluation value, input by the person receiving training in the evaluation work. Specifically, the person receiving training in the evaluation work performs river evaluation training on the river evaluation support device 30 while referring to the evaluation support information (evaluation training information). After the person receiving training in the evaluation work finishes inputting the evaluation value, the evaluation support information display unit 302 displays the evaluation training result. The evaluation support information display unit 302 displays the evaluation support information (evaluation training information), accepts input of the evaluation result of the river to be evaluated, and then displays the evaluation training result based on the evaluation result of similar rivers.

[0074] Fig. 23 is a diagram showing an example of the evaluation training result displayed to the trainee. The evaluation training result refers to information that evaluates the input evaluation result from the evaluation results of similar rivers. The evaluation support information display unit 302 displays the evaluation training result based on the evaluation results of similar rivers. The evaluation support information display unit 302 displays the evaluation value, which is the evaluation result of the similar river identified by the similar river selection unit 103, as the evaluation training result to the person being trained in the evaluation work.

[0075] The evaluation support information display unit 302 may display a scoring result obtained by comparing the evaluation value input by the person undergoing training in the evaluation work with the actual evaluation value of similar rivers. The evaluation support information display unit 302 may also provide feedback. In addition to beginners, the river evaluation support device 30 may also be used by people who have not performed evaluation work for a while, or by experienced people who wish to compare their evaluation criteria with those of other evaluators.

[0076] As described above, it is possible to train in river evaluation work using the evaluation results of an actual river by using the river evaluation support device 30. With this configuration, training in river evaluation work can be provided to those who wish to be trained in evaluation work, such as those who are performing evaluation work for the first time, and evaluation support can be provided. [Explanation of symbols]

[0077] 101: history database, 102: river attribute database, 103: similar river selection unit, 104: evaluation support information creation unit, 105: evaluation support information display unit, 106: evaluation support information creation device, 107: work terminal, 201: evaluation result anonymization unit, 301: evaluation support information creation unit, 302: evaluation support information display unit, 10: river evaluation support device, 20: river evaluation support device, 30: river evaluation support device, 100: river evaluation support system.

Claims

1. a history database that stores past evaluation results of rivers; a river attribute database that stores river attribute information indicating characteristics of the river; a similar river selection unit that selects a similar river having a high similarity to the evaluation target river based on the river attribute information; an evaluation support information creation unit that creates evaluation support information based on evaluation results including past evaluation targets, evaluation contents, and evaluation values ​​of the similar rivers; an evaluation support information display unit that displays the evaluation support information; A river evaluation support device equipped with

2. The river attribute information includes any one of gradient, precipitation in the river basin, river water level during floods, surrounding facilities, maximum flow rate, minimum flow rate, average flow rate, difference between the maximum flow rate and the minimum flow rate, flow velocity, surrounding topography, river basin area, river width, water depth, and river length.

2. The river evaluation support device according to claim 1 .

3. A history database that stores past evaluation results of rivers; a river attribute database that stores river attribute information indicating characteristics of the river; a similar river selection unit that selects a similar river having a high similarity to the evaluation target river based on the river attribute information; an evaluation support information creation unit that creates evaluation support information based on past evaluation results of the similar rivers; an evaluation support information display unit that displays the evaluation support information; Equipped with The similar river selection unit includes: The rivers having the smallest Euclidean distance between the river attribute information are selected as the similar rivers. A river evaluation support device characterized by the above.

4. A history database that stores past evaluation results of rivers; a river attribute database that stores river attribute information indicating characteristics of the river; a similar river selection unit that selects a similar river having a high similarity to the evaluation target river based on the river attribute information; an evaluation support information creation unit that creates evaluation support information based on past evaluation results of the similar rivers; an evaluation support information display unit that displays the evaluation support information; Equipped with The river attribute information is information indicating characteristics of each section of the river, The similar river selection unit calculates the similarity of a partial section of the river, and identifies the river in the partial section having a high similarity as the similar river. A river evaluation support device characterized by the above.

5. A history database that stores past evaluation results of rivers; a river attribute database that stores river attribute information indicating characteristics of the river; a similar river selection unit that selects a similar river having a high similarity to the evaluation target river based on the river attribute information; an evaluation support information creation unit that creates evaluation support information based on past evaluation results of the similar rivers; an evaluation support information display unit that displays the evaluation support information; Equipped with The history database includes attribute information of the worker who input the evaluation result, an evaluation result anonymization unit that anonymizes a part of the attribute information; The evaluation support information generating unit generates the evaluation support information based on the anonymized attribute information and the evaluation result. A river evaluation support device characterized by the above.

6. A history database that stores past evaluation results of rivers; a river attribute database that stores river attribute information indicating characteristics of the river; a similar river selection unit that selects a similar river having a high similarity to the evaluation target river based on the river attribute information; an evaluation support information creation unit that creates evaluation support information based on past evaluation results of the similar rivers; an evaluation support information display unit that displays the evaluation support information; Equipped with the evaluation support information creation unit creates the evaluation support information by deleting a part of the past evaluation results of the similar rivers; The evaluation support information display unit displays the evaluation support information, and after receiving an input of the evaluation result of the evaluation target river, displays an evaluation training result based on the evaluation result of the similar river. A river evaluation support device characterized by the above.

7. a history database that stores past evaluation results of rivers; a river attribute database that stores river attribute information indicating characteristics of the river; a similar river selection unit that selects a similar river having a high similarity to the evaluation target river based on the river attribute information; an evaluation support information creation unit that creates evaluation support information based on evaluation results including past evaluation targets, evaluation contents, and evaluation values ​​of the similar rivers; an evaluation support information transmitting unit for transmitting the evaluation support information; An evaluation support information generating device comprising: a work terminal that transmits information identifying the river to be evaluated to the evaluation support information creation device and displays the evaluation support information relating to the river to be evaluated; A river evaluation support system consisting of:

8. storing past assessments of the river in a history database; storing river attribute information indicating characteristics of the river in a river attribute database; selecting a similar river having a high similarity to the evaluation target river based on the river attribute information; creating evaluation support information based on the evaluation results including the past evaluation targets, evaluation contents, and evaluation values ​​of the similar rivers; displaying the evaluation support information; A river evaluation support method that includes the following:

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