JP6699672B2 - Display control device, safety factor display method, and computer program - Google Patents

Description

  The present invention relates to displaying a safety factor on a slope.

  When evacuating from a sediment disaster, it is expected that people will evacuate from a point where a sediment disaster may occur to a safer place. However, sediment-related disasters such as slope failures can occur locally. Then, for example, when evacuating from a certain point to another point, a sediment disaster may occur at a point on the way of the evacuation route. If roads become inaccessible as a result of this sediment-related disaster, evacuation behavior may take longer than expected, or evacuation itself may become impossible due to isolation. Therefore, in evacuation behavior of sediment disasters, it is important for the user to predict and evaluate sediment disasters on the entire evacuation route.

  As a technique related to the prediction of sediment-related disasters, there are techniques described in Patent Documents 1 to 3. For example, Patent Document 1 describes a system that supports prediction of sediment-related disasters. Patent Document 1 describes a technique for calculating the degree of danger for each section based on the measured soil rainfall index.

  The slope safety factor is one of the indicators of slope stability that is used in the analysis for examining slope stability (slope stability analysis). The slope safety factor is simply the ratio of the sliding force (slipping force) to the slope and its resistance. A state in which the safety factor of the slope is less than 1 is a state in which the sliding force exceeds the resistance, indicating that the slope is unstable. The safety factor of the slope can be calculated by various calculation methods (stability analysis formula) such as the Ferrenius method and the Yanbu method.

JP, 2011-075386, A JP, 2008-112185, A Japanese Patent No. 5731700

  The technique described in Patent Document 1 only displays the degree of risk in time series for each section. Therefore, it is necessary for human beings to predict the disaster itself while viewing information such as the degree of danger displayed, and it depends on the experience and subjectivity of the individual. That is, the technique described in Patent Document 1 could not obtain a certain prediction result and evaluation for sediment-related disasters.

  One of the exemplary objects of the present invention is to solve the above-described problem that a certain prediction result and evaluation cannot be obtained for sediment disasters, and to ensure the evacuation behavior of the user in preparation for sediment disasters. To provide the technology.

  A device according to an aspect of the present invention is specified based on a first display control unit that causes a display unit to display a transition of a safety factor of a slope at a certain point using a live condition value and a predicted value, and the predicted value. Second display control means for causing the display means to display a predicted time at which the safety factor at the point becomes equal to or less than a predetermined threshold value.

  A method according to another aspect of the present invention displays a transition of a safety factor of a slope at a certain point on a display unit using a live condition value and a predicted value, and a safety at the point specified based on the predicted value. The predicted time at which the rate will be less than or equal to a predetermined threshold is displayed.

  A program recording medium according to yet another aspect of the present invention includes a step of causing a computer to display a transition of a safety factor of a slope at a certain point on a display unit using a live condition value and a predicted value, and based on the predicted value. And a step of displaying on the display means an estimated time at which the safety factor at the point specified by the above is equal to or less than a predetermined threshold value is recorded.

  According to the present invention, it is possible to make the evacuation behavior of the user in preparation for a landslide disaster more reliable.

FIG. 1 is a block diagram showing an example of the configuration of a display control device according to the first embodiment of the present invention. FIG. 2 is a diagram showing a display example of information by the display device according to the first embodiment of the present invention. FIG. 3 is a diagram showing another display example of information by the display device according to the first embodiment of the present invention. FIG. 4 is a block diagram showing an example of the configuration of a display system according to the second embodiment of the present invention. FIG. 5 is a sequence chart showing an example of the operation of the display system according to the second embodiment of the present invention. FIG. 6 is a diagram showing a display example of information by the information processing apparatus according to the second embodiment of the present invention. FIG. 7 is a diagram showing a display example of information by the information processing apparatus according to the second embodiment of the present invention. FIG. 8 is a diagram showing a display example of information by the information processing apparatus according to the first modification of the present invention. FIG. 9 is a diagram showing a display example of information by the information processing apparatus according to the second modification of the present invention. FIG. 10 is a block diagram showing an example of the hardware configuration of a computer device according to the modified example 8 of the present invention.

[First Embodiment]
FIG. 1 is a block diagram showing the configuration of the display control device according to the first embodiment of the present invention. The display control device 110 is a computer device that controls the display of information by the display device 120. The display device 120 is a dedicated or general-purpose display device for displaying information (safety factor, etc.) described later, and is, for example, a liquid crystal display. The display control device 110 may be connected to the display device 120 by wire or wirelessly, or may be configured integrally with the display device 120.

  The display control device 110 and the display device 120 are used, for example, by residents in an area where a sediment-related disaster may occur. Alternatively, the display control device 110 and the display device 120 may be used by an organization (public institution, etc.) that transmits warning information for sediment-related disasters.

  The display control device 110 includes a first display control unit 111 and a second display control unit 112. The first display control unit 111 and the second display control unit 112 both control the display of information by the display device 120. However, the first display control unit 111 and the second display control unit 112 differ in the information to be controlled. It should be noted that the control of the display here is to supply the data necessary for displaying the information to the display device 120, for example.

  The first display control unit 111 controls the display of the transition of the safety factor at at least one point. The first display control unit 111 causes the display device 120 to display a temporal change in the safety factor at a predetermined point using the actual value and the predicted value of the safety factor. The display format of the safety factor by the first display control unit 111 is, for example, a table format or a graph format. Moreover, when displaying the transition of the safety factor for a plurality of points, the first display control unit 111 may display a map including the plurality of points and display the transition of the safety factor together with the map.

  Here, the actual value means a numerical value actually calculated on the basis of actual measured values of parameters necessary for calculating the safety factor. That is, the actual value here means a past or present safety factor. On the other hand, the predicted value refers to a future numerical value (at that time point) estimated at a certain time point. In the present embodiment, the actual value and predicted value of the safety factor are supplied from an external device (not shown). The safety factor calculation formula (slope stability analysis formula) is not limited to a specific formula.

  The second display control unit 112 controls the display of the predicted time when the safety factor is equal to or less than the predetermined threshold value. The threshold value here is typically “1.0”, but is not necessarily limited to this. The predicted time may be a time at which the safety factor becomes equal to or lower than a predetermined threshold value, or may be a remaining time until the time at which the safety factor becomes equal to or lower than a predetermined threshold value. The predicted time can be specified based on the predicted value of the safety factor, for example.

  FIG. 2 is a diagram showing a display example of information by the display device 120 according to the first embodiment of the present invention. In this example, the display device 120 displays the transition of the safety factor at a specific point in a graph in time series. This graph is a graph in which the vertical axis represents the safety factor and the horizontal axis represents time. In the figure, time t indicates the current time (that is, the time when this graph is displayed). The display control device 110 supplies the image data showing the illustrated graph to the display device 120.

  In FIG. 2, the safety factor before time t is an actual value. On the other hand, the safety factor after the time t is a predicted value. The display device 120 displays the actual value and the predicted value to the user in a distinguishable manner. In the example of FIG. 2, the display device 120 displays the actual value by a solid line and the predicted value by a broken line so that they can be distinguished from each other. Note that the actual value and the predicted value may be distinguished by the color and thickness of the line.

  The display device 120 also displays the time t1 at which the predicted value of the safety factor reaches a predetermined value (here, “1.0”). Alternatively, the display device 120 may display the difference between the time t and the time t1 such as “2 more hours” instead of the time t1 itself or together with the time t1.

  FIG. 3 is a diagram showing another display example of information by the display device 120 according to the first embodiment of the present invention. In this example, the display device 120 displays the transition of the safety factor at a plurality of points A, B, and C. The display device 120 displays the numerical value of the safety factor every 30 minutes at each point side by side in time series. Here, it is assumed that the current time is 10:00 (1000). Although not distinguished here, the display device 120 may display the numerical appearance (color, typeface, size, etc.) by distinguishing it depending on whether it is an actual value or a predicted value.

  The display device 120 also displays the time at which the predicted value of the safety factor reaches a predetermined value (here, “1.0”) at each point. In addition, the display device 120 displays the character color and the background color of the column whose safety factor is equal to or less than a predetermined value, in a reversed manner from the other numerical value columns.

  As described above, according to the display control device 110 of this embodiment, in addition to the transition of the safety factor from the past to the future, it is possible to display the predicted time at which the safety factor becomes equal to or less than the predetermined threshold value. That is, by using the slope safety factor, a certain prediction result and evaluation of sediment-related disasters can be obtained. Therefore, the user can know in advance that a landslide disaster may occur, and can prepare for the evacuation action.

  Generally, in a disaster, a person having difficulty in evacuation behavior (an elderly person requiring care, a disabled person, etc.) tends to be victimized. For example, according to the “Guidelines for Evacuation Behavior Support for People Who Need Evacuation Behavior Support” issued by the Cabinet Office, in the 2011 Great East Japan Earthquake, the death toll of elderly people aged 65 and over in the total number of victims It was about 60%. In addition, the mortality rate of persons with disabilities was about twice the mortality rate of all affected people. In addition, there were cases in which supporters for the elderly and persons with disabilities were sacrificed.

  It is important to secure sufficient time for such supporters (people requiring support) and the evacuation behavior of those supporters. Therefore, especially for supporters and supporters, the information about when the disaster may occur is more important than the information about the disaster. According to the display control device 110 of the present embodiment, how much time is left before the occurrence of a state in which the risk of sediment-related disaster increases, such as when the safety factor becomes “1.0”. It can be displayed intuitively and easily. As a result, it becomes easy for the user including the support required person and the support person described above to perform appropriate evacuation behavior systematically.

  Further, according to the display control device 110, it is possible to display the actual value and the predicted value of the safety factor so as to be distinguishable from each other. Accordingly, the user can easily distinguish the numerical value indicating the actual situation of the observation point from the numerical value that is more uncertain than the numerical value, and can be more sure to prepare for the evacuation action.

[Second Embodiment]
FIG. 4 is a block diagram showing an example of the configuration of a display system according to the second embodiment of the present invention. The display system 200 includes information processing devices 210 and 220. The information processing device 210 typically functions as a server device for the information processing device 220 that is a client device. On the other hand, the information processing device 220 is, for example, a personal computer or a smartphone. However, the specific configurations of the information processing devices 210 and 220 are not particularly limited as long as they have the functions described below.

  The information processing device 210 is a computer device for calculating a live condition value and a predicted value of the safety factor. The information processing device 210 includes a reception unit 211, a calculation unit 212, and a communication unit 213. On the other hand, the information processing device 220 is a computer device for displaying a safety factor calculated based on the calculation by the information processing device 210. The information processing device 220 includes a communication unit 221, a display control unit 222, a display unit 223, and a UI (User Interface) unit 224.

  The receiving unit 211 receives data required for calculating the safety factor. The receiving unit 211 receives the measurement data indicating the parameters measured at the observation points and the predicted rainfall amount data indicating the predicted rainfall amount at the observation points. Here, the observation point means a point for which the safety factor is displayed. The observation points are, for example, respective points (or representative points of a plurality of points thus divided) obtained by dividing the target area into polygons (triangles, quadrangles, etc.) of a predetermined size.

  Sensors for measuring parameters are installed at the observation points. The parameter here is a variable used to calculate the safety factor. The parameter is, for example, a numerical value having a correlation with the water state in soil. In the following, it is assumed that there are two parameters of the present embodiment: the amount of water in the soil at the observation point and the amount of rainfall per unit time (30 minutes, 1 hour, etc.) at the observation point. The amount of water referred to here may be either the volumetric water content (ratio of the volume of water to the volume of soil) or the weighted water content (ratio of the weight of water to the weight of soil). Good. The receiving unit 211 receives the measurement data indicating the measured values of the water content and the rainfall measured at the observation point. The sensor at the observation point may transmit the measurement data periodically (for example, every 10 minutes), or may transmit the measurement data in response to a request from the information processing device 210.

  The forecast rainfall data indicates the forecast value of rainfall per unit time at the observation point. The predicted rainfall data may be provided from the computer of an external organization or business. For example, in Japan, the Japan Meteorological Agency announces the predicted value of precipitation in mesh units of 1 km square (precipitation short-term forecast).

  The calculation unit 212 calculates the actual value and predicted value of the safety factor. The calculation unit 212 calculates the actual value of the safety factor of the observation point based on the actual measurement value of the water content of the soil of the observation point and the actual measurement value of the rainfall amount of the observation point received by the reception unit 211. Further, the calculation unit 212 calculates the predicted value of the safety factor at the observation point based on the predicted value of the rainfall amount at the observation point.

Here, when the amount of water at a certain time t is m _t and the amount of rainfall is p _t , m _t can be calculated by the following equation (1) based on, for example, a tank model. Here, c _i is a coefficient of less than 1 that varies depending on the soil type (soil type). _{Further, f (p t, p t} -1, p t-2, ..., p tk) _{is, p t, p t-1} , p t-2, ..., given multivariable function to the p _tk variable Is. Note that n and k are numerical values that are appropriately determined.

Here, assuming that the influence of past data can be ignored, m _t can be expressed by the following equation (2). Here, F corresponds to the hydraulic conductivity and varies depending on the soil type. Further, c is a coefficient indicating the water retention of the soil. F and c may be obtained by a test in soil or may be obtained using a predetermined database.

  The formulas (1) and (2) can be used as a formula for predicting the water content. That is, when the predetermined time point after the execution time of the prediction is t, the calculation unit 212 calculates the water content at that time point based on the predicted value of the rainfall amount at that time point and the measured value of the water content amount before that time point. It is possible to calculate (ie predict) the quantity.

A model other than the tank model may be used as the water content m _t . For example, as the water content m _t , a model assuming a quadratic function or another function experimentally or empirically calculated in addition to the linear function can be applied.

  The calculation unit 212 calculates the predicted value of the safety factor at the time point using the calculated formula of the water content thus calculated and the predicted value of the rainfall amount at the observation point at the predetermined time point where the actual measurement value does not exist. . Here, the time point at which the actual measurement value does not exist specifically refers to a time point that is after a specific time point (for example, the timing at which the prediction is performed), that is, the future viewed from the time point.

  There are a plurality of types of safety factor definition equations (stability analysis equations), and the invention is not limited to a particular type. In the following description, the calculation unit 212 calculates a predicted value based on the Ferrenius method (also called the simple division method or the Swedish method) or the modified Ferrenius method.

  The safety factor Fs by the Ferrenius method can be expressed by the following equation (3), for example. Here, c, W, u, and φ are variables representing the adhesive force, weight, pore water pressure, and internal friction angle of the clod, respectively. Further, α represents the inclination angle of the slope. In addition, l represents the length of the slip surface of a divided piece (slice) obtained by dividing the slope in the vertical direction. For convenience of explanation, the inclination angle α and the slip surface length 1 are constants here.

  Further, the safety factor Fs according to the modified Fellenius method can be expressed by the following equation (4), for example. Here, b represents the width of the slice. The slice width b is a constant here.

  Here, the adhesive force c, the weight W, the pore water pressure u, and the internal friction angle φ all change according to the amount of water in the soil. Therefore, any of these variables can be expressed as a function of water content. For example, in the equation (3), the adhesive force c, the weight W, the pore water pressure u, and the internal friction angle φ are expressed by the functions c(m), W(m), u(m), and φ(m) of the water content m, respectively. When it is replaced with, it is represented by the following expression (5). Such a substitution is also possible in the equation (4).

  Note that the functions c(m), W(m), u(m) and φ(m) may differ for each soil. The functions c(m), W(m), u(m) and φ(m) may be obtained in advance based on these variables and the measured values of the water content, or may be estimated by simulation or the like. .

Here, when m in the equation (5) is replaced with m _t in the equation (1) or the equation (2), the following equation (6) is obtained. Then, it is theoretically possible to calculate the safety factor Fs based on the measured value of the past water content and the predicted value of the past rainfall. Further, if the water content m _t can be predicted, it can be said that the safety factor Fs can also be predicted.

  As described above, the moisture content in the soil at a certain point in the future can be predicted if the moisture content before that point and the predicted value of the rainfall amount at that point are obtained. Therefore, the value newly required by the calculation unit 212 in predicting the safety factor is only the predicted value of the rainfall amount at the time when the safety factor is calculated (that is, in the future).

  The calculation unit 212 calculates the actual value and predicted value of the safety factor for each observation point. The calculation unit 212 may execute the calculation for a specific observation point designated by the user, or may execute the calculation for all the observation points. The calculation unit 212 supplies the calculated actual condition value and predicted value of the safety factor to the communication unit 213.

  The communication units 213 and 221 exchange data with each other. The communication units 213 and 221 exchange data via the Internet, for example. However, the communication method by the communication units 213 and 221 is not limited to a specific method.

  The display control unit 222 controls the display of information by the display unit 223. The display control unit 222 generates image data using the actual value and the predicted value of the safety factor received by the communication unit 221. In the present embodiment, the display control unit 222 generates image data according to either the “graph mode” or the “map mode”. The graph mode is a display mode for displaying the transition of the safety factor using a graph. On the other hand, the map mode is a display mode for displaying the transition of the safety factor using a map.

  The display unit 223 displays an image according to the image data generated by the display control unit 222. This image includes at least information about the safety factor. The display unit 223 is, for example, a liquid crystal display, but its display element and display method are not particularly limited.

  The UI unit 224 receives a user operation. The UI unit 224 is, for example, an input device (or an interface thereof) such as a keyboard and a mouse. The UI unit 224 may include a touch screen provided corresponding to the display area of the display unit 223. The operation accepted by the UI unit 224 includes an instruction to display the safety factor and selection of a display mode.

  FIG. 5 is a sequence chart showing an example of the operation of the display system 200 according to the second embodiment of the present invention. This operation is triggered by a user operation on the information processing device 220. In this operation, the user may select a display mode or a point where the safety factor is displayed. However, the display mode and the point where the safety factor is displayed may be determined in advance.

  The information processing device 220 receives a user operation via the UI unit 224 (step S1). When the information processing apparatus 220 receives the user's operation, the information processing apparatus 220 requests the information processing apparatus 210 to transmit the safety factor via the communication unit 221 (step S2). This request may include the current time (that is, at the time of request), information for identifying the point displaying the safety factor, and the like.

  When the information processing device 210 receives this request, the calculation unit 212 calculates the safety factor of one or more points (step S3). The calculation unit 212 calculates the actual value of the safety factor based on the measurement data received in advance. The calculation unit 212 also calculates a predicted value of the safety factor based on the measured data and the predicted rainfall data. The calculation unit 212 calculates the safety factor for a certain period (for example, from 4 hours before to 3 hours ahead) based on the current time.

  The information processing device 210 transmits the actual value and predicted value of the safety factor to the information processing device 220 via the communication unit 213 (step S4). When the information processing device 220 receives the actual value and the predicted value of the safety factor, the display control unit 222 generates image data (step S5). The display control unit 222 generates image data that represents the actual value and the predicted value of the safety factor in a display mode according to the display mode. After that, the display control unit 222 supplies the generated image data to the display unit 223. The display unit 223 displays an image corresponding to the image data (step S6).

  6 and 7 are diagrams showing display examples of information by the information processing apparatus 220 according to the second embodiment of the present invention. This display example illustrates the case where the display mode is the map mode. The display of the information processing device 220 when the display mode is the graph mode is the same as the display example (see FIG. 2) of the first embodiment described above.

  In FIG. 6 and FIG. 7, icons P1 to P5 represent observation points, respectively. The icons P1 to P5 may be assigned names (e.g., place names) that the user can easily recognize. The user may specify the area or observation point to be confirmed and cause the information processing apparatus 220 to display the map. The information processing device 220 may accept designation of the display magnification of the map.

  The icons P1 to P5 represent safety factors by colors. The icons P1 to P5 are, for example, "blue" when the safety factor is 1.5 or more, "green" when the safety factor is 1.3 or more and less than 1.5, and 1.0 or more and 1.3. If it is less than "Yellow", and if the safety factor is less than 1.0, "Red", the color changes according to the safety factor. The information processing apparatus 220 may display a more detailed numerical value of the safety factor corresponding to the selected icon when the user selects (tap, puts the cursor, etc.) on any of the icons P1 to P5. Then, the predicted time at which the safety factor becomes 1.0 or less may be displayed at the observation point corresponding to the selected icon.

  The time TM is the time corresponding to the safety factor displayed by the information processing device 220. For example, the display example of FIG. 6 is an example of displaying the safety factor at 9:00 on a certain day. The slider SL is a GUI (Graphical User Interface) element for changing the time TM. When the user moves (slides) the slider SL to the right, the information processing device 220 displays the value of the safety factor at a time later than the time displayed at that time, and the user moves the slider SL to the left. And the value of the safety factor at the time before the time displayed at that time is displayed. For example, the display example of FIG. 7 is an example in which the user slides the slider SL to the right from the state shown in the display example of FIG. 6 and displays the safety factor at 10:00.

  As described above, according to the display system 200 of the present embodiment, it is possible to achieve the same operational effects as the first embodiment. Moreover, according to the display system 200, it is possible to graphically display the safety factors of a plurality of observation points within a certain range. Thereby, the user can prepare for the evacuation action in consideration of not only the specific point but also the transition of the safety factor in the vicinity of the point.

[Modification]
The above-described first and second embodiments are merely examples of the embodiments of the present invention. Embodiments of the present invention are not limited to these embodiments, and may include, for example, modifications described below. In addition, the embodiment of the present invention may be a combination of the embodiment and the modifications described in the present specification as appropriate. For example, the modifications described using a particular embodiment can be applied to other embodiments.

(Modification 1)
The information processing device 210 may calculate an expected error with respect to the predicted value of the safety factor. In this case, the information processing device 220 may display the calculated error together with the predicted value. The calculation method of this error is as follows, for example.

  The calculation unit 212 calculates the safety factor error ΔFs by the following equation (7). Here, Fs(m) represents the value of the safety factor obtained by substituting the water content m at the latest point in the safety factor prediction formula. Further, Fs(m+Δm) represents the value of the safety factor obtained by substituting the value obtained by adding the water content m at the latest time and the difference Δm to the prediction formula of the safety factor. Further, ∂Fs/∂m represents the rate of change of the safety factor Fs(m) with respect to the water content m at that time.

  FIG. 8 is a diagram showing a display example of information (particularly error) by the information processing apparatus 220 according to the first modification of the present invention. Note that this display example is the same as the example shown in FIG. 2 except that the predicted value of the safety factor is displayed together with the error. In addition to the curve indicating the safety factor Fs, the information processing device 220 displays a value obtained by subtracting (or adding) the error ΔFs from (the predicted value of) the safety factor Fs, that is, a curve indicating Fs−ΔFs (and Fs+ΔFs). To do. Moreover, the information processing apparatus 220 may display the predicted time at which the value of Fs−ΔFs becomes 1.0 or less, if necessary.

  As a result, the user can grasp how accurately the predicted value of the safety factor is calculated. Further, the user can improve the certainty of the evacuation behavior by planning the evacuation behavior in consideration of the calculated error with respect to the predicted value of the safety factor.

(Modification 2)
The information processing device 210 may transmit the information (in the second embodiment, the water content m) that is the basis for calculating the safety factor to the information processing device 220. In this case, the information processing device 220 may display the transmitted information together with the safety factor.

  FIG. 9 is a diagram showing a display example of information (particularly, water content) by the information processing device 220 according to the second modification of the present invention. Note that this display example is the same as the example shown in FIG. 2 except that the measured value of the water content is displayed. In general, the safety factor of a slope tends to decrease as the amount of water in the soil forming the slope increases.

(Modification 3)
The information processing device 210 may calculate a safety factor at an observation point, that is, a point other than the point where the sensor is installed. For example, the information processing device 210 may calculate the safety factor of points around the observation point by interpolation from the safety factor of the observation point. In this case, the information processing apparatus 220 may display a line connecting the points at the same time when the predicted value of the safety factor is equal to or less than a predetermined value, such as a contour line (contour), on the map. .

(Modification 4)
The information processing device 220 may output information such as a safety factor by a method other than display. For example, the information processing device 220 may output the safety factor and the estimated time by voice.

(Modification 5)
The stability analysis formula is not limited to a specific method formula. As the stability analysis formula, in addition to the Ferrenius method and the modified Ferrenius method, the Bishop method, the Yanbu method, etc. can be applied. These stability analysis formulas can also describe necessary variables as a function of water content.

(Modification 6)
The index indicating the slope safety is not limited to the safety factor. Further, the numerical value indicating the water content of the slope is not limited to the water content. For example, the water content has a correlation with the attenuation rate of the vibration waveform in soil. Therefore, if the correlation between the water content and the attenuation rate can be obtained, the stability analysis equation can be described as a function of the attenuation rate.

(Modification 7)
The functions described as the functions of the information processing device 220 in the second embodiment may be realized by the information processing device 210. For example, the information processing device 210 may be configured to execute up to generation of image data (step S5) and transmit the image data to the information processing device 220. In this case, the information processing device 220 may receive the image data and display an image according to the received image data. Further, the information processing devices 210 and 220 may be realized by a single device.

(Modification 8)
Various variations can be considered for the specific hardware configurations of the display control device 100 and the information processing devices 210 and 220 described above, and are not limited to specific configurations. For example, some components of the display control device 100 and the information processing devices 210 and 220 may be realized using software.

  FIG. 10 is a block diagram showing an example of the hardware configuration of a computer device 400 according to the modified example 8 of the present invention. The computer device 400 is an example of a device that realizes the display control device 100 and the information processing devices 210 and 220 described above. The computer device 400 includes a CPU (Central Processing Unit) 401, a ROM (Read Only Memory) 402, a RAM (Random Access Memory) 403, a storage device 404, a drive device 405, a communication interface 406, and an input/output interface. And 407. The display control device 100 and the information processing devices 210 and 220 can be realized by the configuration (or part thereof) shown in FIG.

  The CPU 401 uses the RAM 403 to execute the program 408. The program 408 may be stored in the ROM 402. The program 408 may be recorded in a recording medium 409 such as a flash memory and read by the drive device 405, or may be transmitted from an external device via the network 410. The communication interface 406 exchanges data with an external device via the network 410. The input/output interface 407 exchanges data with peripheral devices (input device, display device, etc.). The communication interface 406 and the input/output interface 407 can function as a unit that acquires or outputs data.

Each of the first display control unit 111, the second display control unit 112, and the display control unit 222 may be configured by a single circuit (processor or the like) or may be configured by a combination of a plurality of circuits. Good. The circuit here may be either dedicated or general-purpose. Further, the first display control unit 111 and the second display control unit 112 may be configured by a single circuit.
[Appendix]
The whole or part of the exemplary embodiments disclosed above can be described as, but not limited to, the following supplementary notes.
(Appendix 1)
First display control means for displaying the transition of the safety factor on the slope at a certain point on the display means using the actual value and the predicted value,
A second display control unit that causes the display unit to display a predicted time at which the safety factor at the point specified based on the predicted value is equal to or less than a predetermined threshold value.
(Appendix 2)
The display control device according to appendix 1, wherein the first display control unit displays the actual value and the predicted value so as to be distinguishable from each other.
(Appendix 3)
The display control device according to supplementary note 1 or 2, wherein the first display control means displays an expected error with respect to the predicted value together with the predicted value.
(Appendix 4)
The display control device according to any one of appendices 1 to 3, wherein the first display control means displays the information serving as a basis for calculating the safety factor.
(Appendix 5)
The display control device according to any one of appendices 1 to 4, wherein the first display control means displays the live condition value and the predicted value side by side in time series.
(Appendix 6)
The display control device according to any one of appendices 1 to 5, wherein the first display control means displays changes in safety factors at a plurality of points.
(Appendix 7)
The display control device according to any one of supplementary notes 1 to 6, wherein the second display control means displays the predicted times at a plurality of points.
(Appendix 8)
The display control device according to any one of supplementary notes 1 to 7, wherein the first display control means causes the display of the safety factor to change according to a user operation.
(Appendix 9)
The first display control unit displays the actual value of the safety factor calculated based on the actual measurement value of the parameter having a correlation with the water content in the soil at the point, and the actual measurement value and the predicted value of the rainfall amount at the point. The display control device according to any one of appendixes 1 to 8, which displays a predicted value of the safety factor calculated based on the above.
(Appendix 10)
The transition of the safety factor of the slope at a certain point is displayed on the display means using the actual value and the predicted value,
A safety factor display method for displaying a predicted time at which the safety factor at the point specified based on the predicted value is equal to or less than a predetermined threshold value.
(Appendix 11)
On the computer,
A step of displaying the transition of the safety factor of the slope at a certain point on the display means using the actual value and the predicted value,
A computer-readable program recording medium recording a program for causing the display means to display a predicted time at which the safety factor at the point specified based on the predicted value is equal to or less than a predetermined threshold value.

  The present invention has been described above using the above-described embodiment as an exemplary example. However, the present invention is not limited to the above embodiment. That is, the present invention can apply various aspects that can be understood by those skilled in the art within the scope of the present invention.

  This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2016-007230 for which it applied on January 18, 2016, and takes in those the indications of all here.

110 display control device 111 first display control unit 112 second display control unit 120 display device 210, 220 information processing device 211 reception unit 212 calculation unit 213, 221 communication unit 222 display control unit 223 display unit 224 UI unit 400 computer device

Claims (11)

First display control means for displaying on the display means an image according to image data generated by using the actual value, the predicted value of the safety factor, and the map, the transition of the safety factor of the slope at a certain point,
A second display control means for displaying on the display means a predicted time at which the safety factor at the point specified based on the predicted value is equal to or less than a predetermined threshold value ,
The first display control means calculates a safety factor of the point having no commentary value based on a safety factor of the point having the commentary value,
The second display control means causes the display means to display the image including a line connecting the points having the same predicted time at which the predicted value of the safety factor at the point is equal to or less than the predetermined threshold value.
Table示制control device. It said first display control means, display control apparatus according to claim 1 to each other distinguishably displaying the Commentary value and the predicted value. It said first display control means, display control apparatus according to the error to be assumed for the predicted value to claim 1 or billed to claim 2 is displayed together with the predicted value. It said first display control means, display control device according to claim 1 for displaying information was the basis for calculating the safety factor to any one of the claims 3 or. It said first display control means, display control device according to any one of the claims 4 or claims 1 to display the Commentary value and the predicted value in chronological order side by side. It said first display control means, display control device according to any one of the claims 5 or claims 1 to display the transition of the safety factor at a plurality of locations. The second display control means, display control device according to claim 1 for displaying the estimated time of the plurality of points in any one of the claims 6 or. It said first display control means, display control device according to any one of the claims 7 or the display of the safety factor of claims 1 to transitions in response to user operation. The first display control means displays the actual value of the safety factor calculated based on the actual measurement value of the parameter having a correlation with the water content in the soil at the point, and the actual measurement value and the predicted value of the rainfall amount at the point. based display control apparatus according to any one of until claims 1 to 8 for displaying the predicted value of the calculated safety rate. The transition of the safety factor of the slope at a certain point, an image corresponding to the image data generated using the actual value of the safety factor, the predicted value and the map is displayed on the display means,
The predicted time that the safety factor at the point specified based on the predicted value is equal to or less than a predetermined threshold is displayed on the display means ,
Calculate the safety factor of the point that does not have the commentary value, based on the safety factor of the point that has the commentary value,
A method of displaying a safety factor for causing the display means to display the image including a line connecting the points having the same predicted time at which the predicted value of the safety factor at the point is equal to or less than the predetermined threshold value . On the computer,
A step of displaying a transition of the safety factor on the slope at a certain point on the display means, in accordance with the image data generated by using the actual value of the safety factor, the predicted value, and the map;
Causing the display unit to display a predicted time at which the safety factor at the point specified based on the predicted value is equal to or less than a predetermined threshold value ,
The step of displaying the image on the display means, a safety factor of the point having no live commentary value is calculated based on a safety factor of the point having the live commentary value,
In the step of displaying the predicted time on the display means, the display means displays the image including a line connecting the points having the same predicted time at which the predicted value of the safety factor at the point is equal to or less than the predetermined threshold value. To display
Computer program.

Images