Drainage construction support system

Abstract

To provide a drainage channel construction support system capable of prompting creation of a soil map and supporting construction of a drainage channel using the soil map.SOLUTION: A drainage channel construction support system of the present invention comprises prompting implementation of a soil survey for a specified construction area to prompt creation of a soil map based on soil data obtained from the soil survey by causing a computer to execute: a construction area information input step of inputting construction area information by a user; a construction area identification step of identifying the construction area from the construction area information inputted in the construction area information input step; a survey point number calculation step of calculating the number of survey points regarding the construction area if the soil map does not exist for the specified construction area; and a survey estimate calculation step of calculating a survey time and a required number of persons from the number of the survey points calculated in the survey point number calculation step.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a drainage channel construction support system for constructing a drainage vertical hole. [Background technology]

[0002] Each crop has an optimal groundwater level, and open drains are constructed for surface drainage, while underdrains are constructed for underground infiltration drainage. An open drainage system drains excess water by digging a horizontal trench on the surface of the field to create a waterway, while an underground drainage system drains excess water in the soil outside the field through underground pipes or horizontal holes. Open and covered conduits require digging horizontal trenches or holes, which requires a large construction area, and the trenches and holes must be connected to allow water to flow, and they must also be inclined toward the drainage ditch. When constructing an underdrain, special machinery and equipment are required, and even when constructing an open drain, a tractor with a certain amount of horsepower is required to dig a trench of a certain depth. Patent Document 1 proposes a device for collecting soil samples for soil condition analysis. Patent Document 1 describes a soil collection unit provided at the front or rear of a self-propelled machine via a lifting mechanism. Patent Document 1 also discloses that the soil collection unit is composed of a cylinder and a screw inside the cylinder, and that the cylinder is inserted into the ground and the screw is rotated to take in soil into the cylinder, after which the soil is retained inside the cylinder. Furthermore, Patent Document 2 discloses that, in parallel with the excavation, the collected underground fluid is analyzed for contaminants and their concentrations are measured. The present inventors have already proposed a method for diagnosing soil physical properties in farm fields, and the soil hardness data used in this soil physical property diagnosis method can be used to appropriately construct the drainage pits of the present invention (Patent Document 3). Patent Document 4 discloses a penetration type soil hardness meter capable of measuring soil hardness at each depth. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-124509 A [Patent Document 2] JP 2003-279452 A [Patent Document 3] JP 2019-20395 A [Patent Document 4] Patent No. 4417422 Summary of the Invention [Problem to be solved by the invention]

[0004] However, Patent Document 1 and Patent Document 2 do not involve the construction of a drainage pit in the first place. In addition, Patent Document 1 does not involve measuring the properties of the soil pulled up from the ground surface while excavating, but involves collecting soil samples. In addition, Patent Document 2 targets volatile pollutants such as volatile organic substances and oils as the measurement targets, and involves sucking in underground fluids such as underground air through a suction hole, analyzing the pollutants contained in the collected underground fluid, and measuring their concentrations. By constructing a drainage route using a drainage vertical hole, it is possible to guide runoff water from the soil surface or water seeping into the soil, but it is extremely effective to create a soil map in advance when constructing such a drainage route.

[0005] An object of the present invention is to provide a drainage channel construction support system that can encourage the creation of a soil map and support the construction of a drainage channel using the soil map. [Means for solving the problem]

[0006] The drainage channel construction support system of the present invention described in claim 1 is a drainage channel construction support system for constructing a drainage vertical hole that guides runoff water from the soil surface or seepage water in the soil, in which a computer executes a construction area information input step for having a user input construction area information, a construction area specification step for specifying a construction area from the construction area information input in the construction area information input step, and, if a soil map does not exist for the specified construction area, a survey point number calculation step for calculating the number of survey points for the construction area, and a survey estimate calculation step for calculating the survey time and required number of people from the number of survey points calculated in the survey point number calculation step, thereby encouraging the implementation of a soil survey for the specified construction area and encouraging the creation of the soil map from the soil data obtained by the soil survey. The drainage pit to be constructed is displayed on the soil map, the soil data is soil hardness data at a plurality of depths at each survey point, and a soil hardness contour map is used as the soil map. It is characterized by: Claim 2 The present invention as described herein is Claim 1 In the drainage channel construction support system described in the above, a soil moisture distribution map is further used as the soil map. Claim 3 The present invention as described above relates to claim 1 Or claim 2 In the drainage channel construction support system described in the above, the computer has a self-customizing construction step, which includes a soil map display step of displaying the soil map to the user, a drainage route input step of having the user input a drainage route, a determination step of determining the suitability of the inputted drainage route, and a drainage vertical hole display step of displaying the drainage vertical hole on the soil map if the determination step determines that the drainage route is suitable. Claim 4 The present invention as described herein is Claim 3 In the drainage channel construction support system described in the above, in the drainage route input step, it is possible to input whether the drainage route is to be surface runoff or subsurface infiltration. It is characterized by: Claim 5 The present invention as described herein is Claim 3 or Claim 4In the drainage channel construction support system described above, the judgment step is characterized in that the suitability of the starting point of the drainage route is judged based on whether or not it is located in a moisture damage area identified from the soil map. Claim 6 The present invention as described herein is Claim 3 from Claim 5 In the drainage channel construction support system described in any one of the above, the determining step is characterized in that the suitability of the drainage channel is determined from a change in soil hardness. Claim 7 The present invention as described above relates to claim 1 Or claim 2 In the drainage channel construction support system described in the above, the computer has an emergency drainage construction step, which includes a soil map display step of displaying the soil map to the user, a headland input step of having the user input the position of the headland, a drainage vertical hole display step of displaying the drainage vertical hole at the position of the input headland, a drainage route determination step of determining the drainage route by selecting a drainage route start point by identifying a moisture-damaged area and selecting a drainage route end point from a change in soil hardness, and a drainage route display step of displaying the determined drainage route on the soil map. Claim 8 The present invention as described herein is Claim 7 In the drainage channel construction support system described above, in the headland input step, a water inlet and a water outlet can be input for the construction area. Claim 9 The present invention as described herein is Claim 8 In the drainage channel construction support system described above, the computer determines the depth of the drainage vertical hole located in the headland based on the input water inlet and outlet, and in the drainage vertical hole display step, displays the depth of the drainage vertical hole located in the headland. Claim 10 The present invention as described above relates to claim 1 Or claim 2In the drainage channel construction support system described in the above, the computer has an efficiency-oriented construction step, which is characterized by having a soil map display step of displaying the soil map to the user, a drainage route determination step of determining the drainage route by selecting a drainage route start point by identifying a moisture-damaged area and selecting a drainage route end point from changes in soil hardness, and a drainage route display step of displaying the determined drainage route on the soil map. Claim 11 The present invention as described herein is Claim 7 from Claim 10 In the drainage channel construction support system described in any one of claims 1 to 5, the drainage route display step is characterized in that the depth of the drainage vertical hole located at the drainage route end point is displayed. Claim 12 The present invention as described above relates to claim 1 Or claim 2 In the drainage channel construction support system described above, the computer has a maintenance management and construction step, which includes a soil map display step of displaying the soil map to the user together with the existing drainage route, a drainage route confirmation step of confirming changes to the existing drainage route, and a re-digging step of deciding to re-dig the existing drainage route if there is no change. Claim 13 The present invention as described above relates to claim 1 Or claim 2 In the drainage channel construction support system described in the above, the computer has an open channel activation construction step, which includes a soil map display step of displaying the soil map to the user, an open channel input step of having the user input the position and depth of the open channel, a drainage direction display step of determining and displaying the drainage direction in the open channel from the input position of the open channel and the identified moisture damage area, and a drainage vertical hole display step of displaying the drainage vertical hole on the soil map along the determined drainage route. Claim 14 The present invention as described above relates to claim 1 Or claim 2In the drainage channel construction support system described in the above, the computer has a drainage priority construction step, and the drainage priority construction step includes a soil map display step of displaying the soil map to the user, an open culvert input step of having the user input the position of an underdrain and the position and depth of an open culvert, a drainage direction display step of determining and displaying a drainage direction in the open culvert using the intersection of the input position of the underdrain and the position of the open culvert as a drainage route starting point, and a drainage vertical hole display step of displaying the drainage vertical hole on the soil map along the determined drainage route. Effect of the Invention

[0007] According to the drainage channel construction support system of the present invention, a user can obtain a survey estimate by inputting construction area information, thereby encouraging the user to conduct a soil survey and create a soil map, thereby supporting the construction of a drainage channel using the soil map. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a flow diagram showing a drainage channel construction support system according to an embodiment of the present invention. [Diagram 2] An explanatory diagram showing the types and positioning of the drainage channel construction method according to this embodiment. [Diagram 3] Diagram showing the self-customization construction steps [Figure 4] Diagram showing emergency drainage construction steps [Diagram 5] Diagram showing efficiency-oriented construction steps [Figure 6] Diagram showing the maintenance management construction steps [Figure 7] Diagram showing the construction steps for activating open channels [Figure 8] Diagram showing the drainage priority construction steps [Figure 9] Diagram showing the drainage priority construction steps DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] A drainage channel construction support system according to a first embodiment of the present invention executes a construction area information input step in which a computer causes a user to input construction area information, a construction area specification step in which a construction area is specified from the construction area information input in the construction area information input step, and, if a soil map does not exist for the specified construction area, a survey point number calculation step in which the number of survey points is calculated for the construction area, and a survey estimate calculation step in which the survey time and required number of personnel are calculated from the number of survey points calculated in the survey point number calculation step, thereby encouraging the implementation of a soil survey for the specified construction area and encouraging the creation of a soil map from soil data obtained by the soil survey. The soil data is soil hardness data at multiple depths at each survey point, and a soil hardness contour map is used as the soil map. It is something. According to this embodiment, the user can obtain a survey estimate by inputting construction area information, thereby encouraging the user to conduct a soil survey and create a soil map, thereby supporting the construction of a drainage channel using the soil map. In addition, soil hardness contour maps can be used to identify areas of moisture damage and even determine drainage routes.

[0010] The present invention Second The embodiment of the present invention is No. 1 In the drainage channel construction support system according to the embodiment, a soil moisture distribution map is further used as the soil map. According to this embodiment, the location of moisture damage can be more easily identified based on the soil hardness and soil moisture, and the priority order and measures for improving drainage can be determined.

[0011] The present invention Third The embodiment of the present invention is Or second In the embodiment of the drainage channel construction support system, the computer has a self-customized construction step, which includes a soil map display step of displaying a soil map to a user, a drainage route input step of having the user input a drainage route, a determination step of determining the suitability of the input drainage route, and a drainage vertical hole display step of displaying a drainage vertical hole on the soil map if the determination step determines that the route is suitable. According to this embodiment, the user can set a drainage route, and the computer can determine the drainage route set by the user to construct an appropriate drainage route.

[0012] The present invention Fourth The embodiment of the present invention is Third In the drainage channel construction support system according to the embodiment, in the drainage route input step, it is possible to input whether the drainage route is to be surface runoff or subsurface infiltration. According to this embodiment, the user can select between surface runoff and subsoil infiltration depending on whether they want to deal with acute or chronic moisture damage, and can also select the drainage properties according to the type of crop being cultivated and the expected weather conditions.

[0013] The present invention Fifth The embodiment of the present invention is Third or Fourth In the drainage channel construction support system according to the embodiment, the determination step determines the suitability of a drainage channel starting point based on whether or not it is located in a moisture damage area identified from a soil map. According to this embodiment, the suitability of the drainage path starting point can be determined.

[0014] The present invention Sixth The embodiment of the present invention is Third from Fifth In the drainage channel construction support system according to any one of the embodiments, the determining step determines the suitability of the drainage channel from a change in soil hardness. According to this embodiment, the suitability of the drainage path can be determined.

[0015] The present invention Seventh The embodiment of the present invention is Or secondIn the drainage channel construction support system according to the embodiment, the computer has an emergency drainage construction step, which includes a soil map display step of displaying a soil map to a user, a headland input step of having the user input the position of the headland, a drainage vertical hole display step of displaying a drainage vertical hole at the input headland position, a drainage route determination step of determining the drainage route by selecting a drainage route start point by identifying a moisture-damaged area and selecting a drainage route end point from a change in soil hardness, and a drainage route display step of displaying the determined drainage route on the soil map. According to this embodiment, emergency measures can be taken after heavy rain.

[0016] The present invention Eighth The embodiment of the present invention is Seventh In the drainage channel construction support system according to the embodiment, in the headland input step, the water inlet and water outlet can be input for the construction area. According to this embodiment, the drain direction can be determined by inputting the water inlet and outlet.

[0017] The present invention 9th The embodiment of the present invention is Eighth In the embodiment of the drainage channel construction support system, the computer determines the depth of the drainage vertical hole located in the headland based on the input water inlet and outlet, and in the drainage vertical hole display step, displays the depth of the drainage vertical hole located in the headland. According to this embodiment, the depth of the drainage shaft can be determined according to the drainage direction.

[0018] The present invention 10th The embodiment of the present invention is Or second In the embodiment of the drainage channel construction support system, the computer has an efficiency-oriented construction step, which includes a soil map display step of displaying a soil map to a user, a drainage route determination step of determining the drainage route by identifying a moisture-damaged area to select a drainage route start point and selecting a drainage route end point from changes in soil hardness, and a drainage route display step of displaying the determined drainage route on the soil map. According to this embodiment, emergency measures can be taken before heavy rain occurs.

[0019] The present invention 11th The embodiment of the present invention is Seventh from 10th In the drainage channel construction support system according to any one of the above embodiments, the drainage route display step displays the depth of the drainage vertical hole located at the end point of the drainage route. According to this embodiment, the depth of the drainage vertical hole located at the end point of the drainage path can be known, making construction easier.

[0020] The present invention 12th The embodiment of the present invention is Or second In the drainage channel construction support system according to the embodiment, the computer has a maintenance management and construction step, which includes a soil map display step of displaying a soil map to a user along with an existing drainage route, a drainage route confirmation step of confirming changes to the existing drainage route, and a re-digging step of deciding to re-dig the existing drainage route if there are no changes. According to this embodiment, drainage can be maintained at an optimum level by periodically re-digging the area to prevent the surrounding area from collapsing and becoming filled in over time.

[0021] The present invention 13th The embodiment of the present invention is Or second In the drainage channel construction support system according to the embodiment, the computer has an open channel activation construction step, which includes a soil map display step of displaying a soil map to a user, an open channel input step of having the user input the position and depth of the open channel, a drainage direction display step of determining and displaying the drainage direction in the open channel from the input open channel position and the identified moisture damage area, and a drainage vertical hole display step of displaying a drainage vertical hole on the soil map along the determined drainage route. According to this embodiment, the drainage effect of the open channel can be improved, and the open channel can be made shallow, thereby improving workability in the field.

[0022] The present invention 14 The embodiment of the present invention is Or second In the embodiment of the drainage channel construction support system, the computer has a drainage priority construction step, which includes a soil map display step of displaying a soil map to a user, an open culvert input step of having the user input the position of an underdrain and the position and depth of an open culvert, a drainage direction display step of determining and displaying the drainage direction in the open culvert with the intersection of the inputted positions of the underdrain and the open culvert as the starting point of the drainage route, and a drainage vertical hole display step of displaying a drainage vertical hole on the soil map along the determined drainage route. According to this embodiment, the drainage effect of the underdrain and open drain can be improved, and the open drain can be made shallow, so that workability in the field can be improved. EXAMPLES

[0023] A drainage channel construction support system according to one embodiment of the present invention will be described below.

[0024] FIG. 1 is a flow diagram showing a drainage channel construction support system according to this embodiment. The drainage channel construction support system according to this embodiment supports the construction of a drainage vertical hole that guides runoff water from the soil surface or seepage water in the soil.

[0025] The computer prompts the user to input construction area information (construction area information input step S1), and identifies the construction area from the construction area information input in the construction area information input step S1 (construction area identification step S2). In the construction area information input step S1, for example, map information is provided to a user, and the user inputs construction area information by marking a construction area on the provided map information. In the construction area specification step S2, the latitude, longitude, and area of ​​the marked construction area are obtained.

[0026] The computer checks whether or not a soil map already exists in the database 90 for the construction area identified in the construction area identification step S2 (soil map existence check step S3). If no soil map exists for the construction area identified in soil map existence confirmation step S3 (No in S3), the computer acquires the position and area information of the identified construction area (construction area information acquisition step S4), and calculates the number of survey points for the construction area (survey point number calculation step S5). The number of survey points is determined, for example, so that the positioning points are approximately 10m meshes. If the construction area is 1ha, excluding the outermost periphery of the construction area from the positioning points, the number of positioning points will be 64 (in an 8x8 grid). The mesh spacing of the number of positioning points can be changed depending on the soil characteristics due to the position of the construction area, and the mesh spacing can also be changed depending on the use and crop of the construction area. The survey time and required number of people are calculated from the number of survey points calculated in survey point number calculation step S5 (survey estimate calculation step S6). Survey time is calculated by number of survey points x unit time (e.g., 2 min) + number of surveyed fields x unit time (e.g., 15 min). Required number of people is calculated by number of survey points x unit time (e.g., 2 min) ÷ working hours per day (e.g., 4 h). In the survey date determination step S7, the computer can provide the user with calendar information, for example, and the user can check and input a desired date. The survey is conducted on the survey date determined in survey date determination step S7, and the user, worker, or survey manager inputs survey completion data, and the computer manages that the survey has been conducted (S8). For measuring soil hardness, for example, a penetration type soil hardness meter as disclosed in Patent Document 4 is used to measure soil hardness at each depth, and position data of the survey points is obtained using a global navigation satellite system (GNSS). It is also preferable to measure the soil moisture of the plowed soil layer at each survey point together with the soil hardness.

[0027] The soil hardness data and soil moisture data for each depth of the survey point are stored together with the position data and transmitted to the computer, which acquires the soil data (S9). The computer can also manage the implementation of the survey in S8 by acquiring the soil data in S9. The computer generates a soil hardness contour map for each depth from the measured soil hardness data and the position data of the survey point, and creates a soil moisture horizontal distribution map from the measured soil moisture data and the position data of the survey point (soil map creation step S10). Note that it is possible to determine the depth of the tillage pan layer and whether the soil horizon is cultivated soil or subsoil from the soil hardness contour map for each depth. In this embodiment, the computer executes a construction area information input step S1, a construction area identification step S2, and, if a soil map does not exist for the identified construction area, a survey point number calculation step S5 for calculating the number of survey points for the construction area, and a survey estimate calculation step S6, thereby urging the user to conduct a soil survey for the identified construction area and to create a soil map using the soil data obtained from the soil survey.

[0028] In this way, the user can obtain a survey estimate by inputting construction area information, thereby encouraging the user to conduct a soil survey and create a soil map, thereby supporting the construction of drainage channels using the soil map. In addition, by using soil hardness data at multiple depths at each survey point as the soil data and a soil hardness contour map as the soil map, it is possible to identify areas susceptible to moisture damage using the soil hardness contour map and even determine drainage routes. Specifically, low hardness points can be identified from a soil hardness contour map of the deep subsoil, and low hardness areas including the identified low hardness points can be identified as rainwater retention areas from a soil hardness contour map of the shallow topsoil. In addition, by using a soil hardness contour map in the till layer and a soil moisture distribution map in the till layer as soil maps, it is possible to identify locations where moisture damage is occurring based on soil hardness and soil moisture, and to determine priorities and measures for improving drainage.

[0029] In the drainage channel construction support system of this embodiment, if a soil map exists for the construction area identified in the soil map existence confirmation step S3 (Yes in S3), the computer prompts the user to select whether to carry out construction using normal methods (S11), whether to carry out construction before rainfall (S12), whether there is an emergency (S13), whether to perform maintenance on existing drainage shafts (S14), or whether to focus on construction of existing open channels (S15). In S11, the user is prompted to select whether he / she desires a standard construction design or self-customized construction. If the user does not select a conventional construction design (No in S11), the process proceeds to self-customization construction step S16. If the user selects a conventional construction design (Yes in S11) and selects not construction before rainfall (No in S12), it is assumed that the construction will take place after significant rainfall, so the process proceeds to emergency drainage construction step S17. If the user selects construction before rainfall (Yes in S12) and selects that there is an urgency (Yes in S13), it is assumed that time is limited, and therefore the process proceeds to efficiency-oriented construction step S18. If the user does not select "urgent" (No in S13) but selects "maintenance of the existing drainage shaft" (Yes in S14), the process proceeds to the maintenance management construction step S19 in which the drainage shaft is re-excavated with the existing settings. If the user does not select maintenance of the existing drainage shaft (No in S14) but selects focused construction of the existing open channel (Yes in S15), the process proceeds to open channel activation construction step S20. If the user does not select the intensive construction of the existing open drainage (No in S15), the process proceeds to the drainage priority construction step S21.

[0030] It should be noted that if the user desires to add a drainage route after the open channel activation construction step S20 or the drainage priority construction step S21 (Yes in S22), the process proceeds to the self-customization construction step S16. The data set in the self-customization construction step S16, the emergency drainage construction step S17, the efficiency-oriented construction step S18, the maintenance management construction step S19, the open channel activation construction step S20, and the drainage priority construction step S21 is stored in the database 90 together with the setting date or the planned construction date.

[0031] FIG. 2 is an explanatory diagram showing the types and positioning of the drainage channel construction method according to this embodiment. As shown in Figure 2, there is self-customized construction for experienced workers, and depending on the application, there are emergency drainage construction, efficiency-oriented construction, drainage priority construction, open channel activation construction, and maintenance management construction.

[0032] Figure 3 shows the self-customization construction steps. In FIG. 3, the soil maps displayed are a soil hardness contour map in the till layer and a soil moisture horizontal distribution map in the till layer. In the self-customization construction step S16, the computer has a soil map display step S31 that displays a soil map to the user, a drainage route input step S32 that allows the user to input a drainage route, a determination step S33 that determines the suitability of the input drainage route, a drainage vertical hole depth display step S34 that displays the drainage vertical hole depth at the outlet of the drainage route, and a drainage vertical hole display step S35 that displays the drainage vertical hole on the soil map.

[0033] In the drainage path input step S32, the drainage path is displayed with an arrow by the user specifying the drainage path start point and drainage path end point on the soil map. Here, it is preferable to set the drainage path as a straight line, but it may be set as a gentle curve depending on the change in soil hardness. In addition, in the drainage route input step S32, it is possible to input whether the drainage route is to be surface runoff or subsurface infiltration. Rainwater first begins to infiltrate into the soil, but when the amount of rainfall exceeds the amount of infiltration, it begins to be drained as surface runoff, and when the surface runoff saturation point is exceeded, water is flooded in the field. In this invention, when the aim is to promote surface runoff, the depth of the drainage vertical hole is set to the tillage pan layer, and when the aim is to prevent flooding, the depth of the drainage vertical hole is set deeper than the tillage pan layer. When the depth of the drainage vertical hole is set to the tillage pan layer, it may reach the tillage pan layer, but it is not deep enough to exceed the tillage pan layer.

[0034] In judgment step S33, the computer judges the suitability of the drainage route starting point based on whether it is located in a moisture damage area identified from the soil map. Points where the soil hardness is hard and the soil moisture is high can be identified as acute moisture damage areas, and points where the soil hardness is soft and the soil moisture is high can be identified as chronic moisture damage areas. The drainage route starting point is located in the moisture damage area, but it is preferable to locate it on the periphery of the moisture damage area rather than in the center. Locating the drainage route starting point on the periphery of the moisture damage area makes it easier to guide rainwater that flows into the moisture damage area to the drainage route. In addition, in the judgment step S33, the suitability of the drainage path is judged based on the change in soil hardness. Drainage can be improved by locating the drainage path at a point where the change in soil hardness is small. Since the soil hardness changes when the contour line width is narrow, it is preferable to form the drainage path in an area where the contour line width is wide and without crossing the contour line.

[0035] If the judgment step S33 determines that the drainage route is suitable (Yes in S33), the process proceeds to the drainage hole depth display step S34. If the judgment step S33 determines that the drainage route is not suitable (No in S33), the process returns to S32 and the user re-inputs the drainage route. In drainage vertical hole depth display step S34, for drainage routes designated as surface runoff in drainage route input step S32, a depth shallower than the tillage pan layer is displayed, and for drainage routes designated as sub-layer infiltration in drainage route input step S32, a depth deeper than the tillage pan layer is displayed. The depth of the drainage pit is set to the standard depth (5 cm) at the start of the drainage path, and is gradually deepened toward the end of the drainage path. For drainage paths designated as subsoil infiltration, the longer the drainage path, the deeper the end of the drainage path becomes. The drainage vertical holes displayed in the drainage vertical hole display step S35 are set at equal intervals along the drainage route specified by the arrows. Setting them at equal intervals is excellent in terms of workability, but the intervals can also be changed depending on the soil hardness and the size of the moisture-damaged area.

[0036] After the drainage pit display step S35, if the user wishes to make additions or changes (Yes in S36), the user inputs the contents of the additions or changes (S37). Figure 3 shows the case where one drainage route is changed to two rows of drainage routes. By forming multiple rows of drainage routes, it is possible to make it easier for more rainwater to flow. The additional changes entered in S37 are displayed on the soil map (S38), and the drainage route data set including the additional changes is saved in the database 90 together with the setting date or the planned construction date (S39), and the self-customization construction step S16 is then completed. If there are no additional changes made by the user (No in S36), the set drainage path data is stored in the database 90 together with the setting date or the planned construction date (S39), and the self-customization construction step S16 ends.

[0037] In this way, in the self-customization construction step S16, the user can set the drainage route, and the computer can determine the drainage route set by the user to construct an appropriate drainage route. Furthermore, in the self-customization construction step S16, the user can select between surface runoff and subsoil infiltration depending on whether they are dealing with acute or chronic moisture damage, and can also select drainage properties depending on the type of crop being cultivated and the expected weather conditions. In addition, in the self-customization construction step S16, the start point of the drainage route and the suitability of the drainage route input by the user can be determined.

[0038] Figure 4 shows the emergency drainage construction steps. In FIG. 4, the soil maps displayed are a soil hardness contour map in the till layer and a soil moisture horizontal distribution map in the till layer. In the emergency drainage construction step S17, the computer has a soil map display step S41 for displaying a soil map to the user, a headland input step S42 for having the user input the position of the headland, a drainage vertical hole display step S43 for displaying a drainage vertical hole at the input headland position, a drainage route determination step S44 for determining a drainage route, and a drainage route display step S45 for displaying the determined drainage route on the soil map.

[0039] In headland input step S42, the position of the headland is input into the soil map, and the headland area is displayed on the soil map. In addition, in the headland input step S42, the water inlet and outlet are input for the construction area. By inputting the water inlet and outlet, the drainage direction can be determined. In the drainage vertical hole display step S43, a drainage vertical hole is displayed at the input headland position. The computer determines the depth of the drainage vertical hole located at the headland based on the input water inlet and outlet, and in drainage vertical hole display step S43, displays the depth of the drainage vertical hole to be provided at the headland based on the input water inlet and outlet. The drainage vertical hole provided at the headland is to guide seepage water below the tillage pan layer, and if the tillage pan layer is 15 cm, the drainage vertical hole located at the headland on the inlet side is set to 20 cm deeper than the tillage pan layer, and the drainage vertical hole located at the headland on the outlet side is set to 60 cm deeper than the inlet. The drainage vertical holes located at other headlands (headlands in the vertical direction in Figure 4) are set to 20 cm on the inlet side and 60 cm on the outlet side, with the drainage vertical holes in between being set deeper in sequence from the inlet side to the outlet side.

[0040] The drainage route determination step S44 is performed by identifying a moisture-damaged area from a soil map (S44-1), selecting a drainage route start point at the location of the identified moisture-damaged area (S44-2), and selecting a drainage route end point from the change in soil hardness (S44-3). In S44-1, areas with hard soil hardness and high soil moisture can be identified as areas of acute moisture damage, and areas with soft soil hardness and high soil moisture can be identified as areas of chronic moisture damage. In S44-2, the drainage route starting point is selected to be located in the moisture damage area, but it is preferable to select it on the periphery of the moisture damage area rather than in the center. By positioning the drainage route starting point on the periphery of the moisture damage area, it becomes easier to guide rainwater that flows into the moisture damage area to the drainage route. In S44-3, the end point of the drainage route is selected by setting the drainage route in an area where the change in soil hardness is small (constant hardness area). By setting the drainage route in a point where the change in soil hardness is small, the drainage performance can be improved.

[0041] The depth of the drainage vertical hole displayed in the drainage path display step S45 is up to the tillage pan layer, which effectively promotes surface runoff. In the drainage path display step S45, the depth of the drainage vertical hole at the drainage path end point (outlet) is also displayed. The depth of the drainage pit at the exit displayed in the drainage path display step S45 is also the depth to the tillage pan layer. When the depth to the tillage pan layer is 15 cm, the drainage pit depth is set to the standard depth (5 cm) at the drainage path start point and gradually deepens toward the depth (15 cm) at the drainage path end point. By forming multiple rows of drainage paths according to the soil hardness and the size of the moisture-damaged area, it is possible to make it easier for a large amount of rainwater to flow. The set drainage route data is stored in the database 90 together with the setting date or the planned construction date (S46), and the emergency drainage construction step S17 is terminated.

[0042] In this manner, in the emergency drainage construction step S17, emergency measures can be taken after heavy rain. Furthermore, by inputting the water inlet and outlet in headland input step S42, the computer can determine the drainage direction and display the depth of the drainage shaft located in the headland. In addition, in the drainage path display step S45, the depth of the drainage vertical hole located at the end point of the drainage path is displayed. According to this embodiment, the depth of the drainage vertical hole located at the end point of the drainage path can be known, making construction easier.

[0043] Figure 5 shows the efficiency-focused construction steps. In FIG. 5, the soil maps displayed are a soil hardness contour map in the till layer and a soil moisture horizontal distribution map in the till layer. In the efficiency-oriented construction step S18, the computer has a soil map display step S51 for displaying a soil map to the user, a drainage route determination step S52 for determining a drainage route, and a drainage route display step S53 for displaying the determined drainage route on the soil map.

[0044] The drainage route determination step S52 is performed by identifying a moisture-damaged area from a soil map (S52-1), selecting a drainage route start point at the location of the identified moisture-damaged area (S52-2), and selecting a drainage route end point from the change in soil hardness (S52-3). In S52-1, areas with hard soil hardness and high soil moisture can be identified as areas of acute moisture damage, and areas with soft soil hardness and high soil moisture can be identified as areas of chronic moisture damage. In S52-2, the drainage route starting point is selected to be located in the moisture damage area, but it is preferable to select it on the periphery of the moisture damage area rather than in the center. By positioning the drainage route starting point on the periphery of the moisture damage area, it becomes easier to guide rainwater that flows into the moisture damage area to the drainage route. In S52-3, the end point of the drainage route is selected by setting the drainage route in an area where the change in soil hardness is small (constant hardness area). By setting the drainage route in a point where the change in soil hardness is small, the drainage performance can be improved.

[0045] The depth of the drainage pit displayed in the drainage path display step S53 is up to the tillage pan layer, which effectively promotes surface runoff. In the drainage path display step S53, the depth of the drainage hole at the drainage path end point (outlet) is also displayed. The depth of the drainage pit at the outlet displayed in the drainage path display step S53 is also the depth to the tillage pan layer. If the depth to the tillage pan layer is 15 cm, the drainage pit depth is set to the standard depth (5 cm) at the drainage path start point and gradually deepens toward the depth (15 cm) at the drainage path end point. By forming multiple rows of drainage paths according to the soil hardness and the size of the moisture-damaged area, it is possible to make it easier for a large amount of rainwater to flow. The set drainage path data is stored in the database 90 together with the setting date or the planned construction date (S54), and the efficiency-oriented construction step S18 is terminated.

[0046] In this way, the efficiency-oriented construction step S18 is intended to construct a minimum amount of drainage paths in a short period of time before rainfall, allowing emergency response before heavy rain. In addition, the depth of the drainage vertical hole located at the end of the drainage route can be known, making construction easier.

[0047] Figure 6 shows the maintenance management construction steps. In FIG. 6, the soil maps displayed are a soil hardness contour map in the till layer and a soil moisture horizontal distribution map in the till layer. In the maintenance management execution step S19, the computer has a soil map display step S61 for displaying a soil map together with the existing drainage route to the user, and a drainage route confirmation step S62 for confirming the change of the drainage route. Drainage shafts have a tendency to collapse and fill up over time, so they need to be re-dug regularly to maintain optimal drainage.

[0048] If a change is desired in the drainage route confirmation step S62 (Yes in S62), the process proceeds to the self-customization construction step S16, and the data set in the self-customization construction step S16 is saved in the database 90 together with the setting date or the planned construction date (S64). If no change is desired in the drainage route confirmation step S62 (No in S62), it is decided to re-dig the existing drainage route (S63), and the set date or planned construction date is saved in the database 90 (S64). If re-digging the existing drainage route, the re-digging is performed in the same position and to the same depth as the existing drainage vertical hole. Note that even if it is an existing drainage route, if the depth of the drainage vertical hole is to be changed, the process proceeds to the self-customization construction step S16 and the change is made.

[0049] Figure 7 shows the open channel activation construction steps. In FIG. 7, a soil hardness contour map in the till layer and a soil moisture horizontal distribution map in the till layer are displayed as soil maps. In the open channel activation construction step S20, the computer has a soil map display step S71 which displays a soil map to the user, an open channel input step S72 which allows the user to input the position and depth of the open channel, a drainage direction display step S73 which determines and displays the drainage direction in the open channel from the input open channel position and the identified moisture damage area, a drainage vertical hole display step S74 which displays drainage vertical holes on the soil map along the determined drainage route, and a drainage route confirmation step S75 which confirms changes to the drainage route.

[0050] As described above, points where the soil hardness is hard and the soil moisture is high, and points where the soil hardness is soft and the soil moisture is high can be identified as moisture-damaged areas, and the starting point of the drainage route can be selected so as to be located in the moisture-damaged area, and the drainage direction can be determined with the position of the open channel close to the starting point of the drainage route as the upstream.

[0051] The drainage shaft is set so that it becomes deeper in the drainage direction in the open channel. If a change is desired in the drainage route confirmation step S75 (Yes in S75), the process proceeds to the self-customization construction step S16, and the data set in the self-customization construction step S16 is saved in the database 90 together with the setting date or the planned construction date (S76). If no change is desired in the drainage route confirmation step S75 (No in S75), the set date or planned construction date is stored in the database 90 (S76). According to this embodiment, the drainage effect of the open channel can be improved. Also, even if the open channel is shallow, the space created by the drainage vertical hole has the function of temporarily retaining rainwater, and the drainage performance of the open channel can be guaranteed, so that agricultural machines such as tractors and combine harvesters do not get stuck in the open channel groove, improving workability in the field.

[0052] Figures 8 and 9 show the drainage priority construction steps. In Fig. 8 and Fig. 9, a soil hardness contour map in the till layer and a soil moisture horizontal distribution map in the till layer are displayed as soil maps. In the drainage priority construction step S21, the computer has a soil map display step S81 which displays a soil map to the user, a clear culvert input step S82 which has the user input the position of the underdrain and the position and depth of the open culvert, a drainage direction display step S83 which determines and displays the drainage direction in the open culvert using the intersection of the input underdrain position and open culvert position as the starting point of the drainage route, a drainage vertical hole display step S84 which displays a drainage vertical hole on the soil map along the determined drainage direction, a drainage vertical hole addition display step S85 which additionally displays a drainage vertical hole in a position other than the underdrain and the open culvert, and a drainage route confirmation step S86 which confirms the change in the drainage route.

[0053] The drainage shaft is set so that it becomes deeper in the drainage direction in the open channel. In the drainage pit addition display step S85, a drainage pit is added so as to improve the connection between the moisture-damaged area identified from the soil map and the culvert. If a change is desired in the drainage route confirmation step S86 (Yes in S86), the process proceeds to the self-customization construction step S16, and the data set in the self-customization construction step S16 is saved in the database 90 together with the setting date or the planned construction date (S87). If no change is desired in the drainage route confirmation step S86 (No in S86), the set date or the planned construction date is stored in the database 90 (S87). According to this embodiment, the drainage effect of the underdrain and open drain can be improved, and the open drain can be made shallow, so that the workability in the field can be improved.

[0054] According to the drainage channel construction support system of this embodiment, a drainage route is formed by providing multiple drainage vertical holes at a predetermined depth from the ground surface, and runoff water from the soil surface and seepage water in the soil can be guided through the drainage route formed by the multiple drainage vertical holes.

[0055] The drainage route of the present invention guides runoff water from the soil surface and seepage water in the soil by providing multiple drainage vertical holes at a specified depth from the ground surface. The drainage route can be constructed more easily than a culvert or open channel, and drainage performance can be improved by constructing it together with a culvert or open channel. [Industrial Applicability]

[0056] The drainage channel construction support system according to the present invention is particularly suitable for constructing vertical drainage holes in farm fields. [Explanation of symbols]

[0057] 90 Databases

Claims

1. A drainage channel construction support system for constructing a drainage vertical hole that guides runoff water from the soil surface or infiltrating water in the soil, The computer A construction area information input step for causing a user to input construction area information; A construction area identification step of identifying a construction area from the construction area information inputted in the construction area information input step; If there is no soil map for the identified construction area, a survey point number calculation step of calculating the number of survey points for the construction area; a survey estimate calculation step for calculating the survey time and the number of required personnel from the number of survey points calculated in the survey point number calculation step; By executing Prompt the implementation of a soil survey in the identified construction area, prompt the creation of the soil map based on soil data obtained by the soil survey, and display the drainage pit to be constructed on the soil map; The soil data is soil hardness data at a plurality of depths at each survey point, and a soil hardness contour map is used as the soil map. A drainage channel construction support system characterized by the above.

2. A soil moisture distribution map is further used as the soil map.

2. The drainage channel construction support system according to claim 1.

3. The computer, It has a self-customization construction step, In the self-customization construction step, a soil map display step of displaying the soil map to the user; A drainage path input step of having the user input a drainage path; A determination step of determining the suitability of the input drainage path; a drainage vertical hole display step of displaying the drainage vertical hole on the soil map when the determination step determines that the drainage vertical hole is suitable; have 3. The drainage channel construction support system according to claim 1 or 2.

4. In the drainage path input step, You can input whether the drainage route is surface runoff or subsurface infiltration.

4. The drainage channel construction support system according to claim 3.

5. In the determination step, the suitability of the drainage route is determined based on whether or not a drainage route starting point is located in a moisture damage area identified from the soil map.

5. The drainage channel construction support system according to claim 3 or 4.

6. In the determining step, suitability of the drainage path is determined based on a change in soil hardness.

6. The drainage channel construction support system according to claim 3, wherein the drainage channel construction support system is a system for supporting a drainage channel.

7. The computer, It has an emergency drainage construction step, In the emergency drainage construction step, a soil map display step of displaying the soil map to the user; A headland input step for causing the user to input the position of the headland; A drainage vertical hole display step of displaying the drainage vertical hole at the input position of the pillow area; a drainage route determination step of determining a drainage route start point by identifying a moisture-damaged area and determining a drainage route end point based on a change in soil hardness; a drainage path display step of displaying the determined drainage path on the soil map; have 3. The drainage channel construction support system according to claim 1 or 2.

8. In the headland input step, The water inlet and outlet can be entered for the construction area.

8. The drainage channel construction support system according to claim 7.

9. The computer determines the depth of the drainage shaft located in the headland based on the input water inlet and water outlet, In the drainage vertical hole display step, the depth of the drainage vertical hole located in the headland is displayed.

9. The drainage channel construction support system according to claim 8.

10. The computer, With an emphasis on efficiency in construction steps, In the efficiency-oriented construction step, a soil map display step of displaying the soil map to the user; a drainage route determination step of determining a drainage route start point by identifying a moisture-damaged area and determining a drainage route end point based on a change in soil hardness; a drainage path display step of displaying the determined drainage path on the soil map; have 3. The drainage channel construction support system according to claim 1 or 2.

11. In the drainage path display step, the depth of the drainage vertical hole located at the end point of the drainage path is displayed. The drainage channel construction support system according to any one of claims 7 to 10.

12. The computer, It has a maintenance management and construction step, In the maintenance management construction step, a soil map display step of displaying the soil map together with an existing drainage route to the user; A drainage route confirmation step of confirming a change to the existing drainage route; If there is no change, a re-digging step is performed to determine whether to re-dig the existing drainage route. have 3. The drainage channel construction support system according to claim 1 or 2.

13. The computer, It has an open channel activation construction step, In the open channel activation construction step, a soil map display step of displaying the soil map to the user; an open channel input step for having the user input a position and a depth of the open channel; a drainage direction display step of determining and displaying a drainage direction in the open channel based on the input position of the open channel and the identified wet damage area; a drainage well display step for displaying the drainage well on the soil map along the determined drainage route; have 3. The drainage channel construction support system according to claim 1 or 2.

14. The computer, It has a drainage-priority construction step, In the drainage priority construction step, a soil map display step of displaying the soil map to the user; A clear and underdrain input step for allowing the user to input the location of the underdrain and the location and depth of the open drain; a drainage direction display step of determining and displaying a drainage direction in the open drain using an intersection point between the input position of the underdrain and the input position of the open drain as a drainage route starting point; a drainage well display step for displaying the drainage well on the soil map along the determined drainage route; have 3. The drainage channel construction support system according to claim 1 or 2.

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