JP2002298063A - Real inundation map system and method for inundation forecast and drainage control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To newly provide a real inundation map system forecasting the inundation state and inundation damage state and controlling the forced drainage by rightly recognizing and arithmetically processing a landform and precipitation data in a target area at real time. SOLUTION: This real inundation map system is provided with a precipitation analysis means detecting precipitation and flow rate results based on the precipitation material data and real-time precipitation data in the target area, a terrain analysis means detecting the ground height, etc., based on the terrain data of the target area, an input means of housing state data of the target area, and an input means of land use state of the target area. This real inundation map system is characterized in having an outflow analysis means calculating the outflow of rain from the data, an inland water analysis means detecting the inundation quantity, an inundation position, and an extent based on the analysis data of the outflow analysis means, the analysis data of the terrain analysis means, and data of the established conduit outflow, and a control means calculating discharge capacity of pumps in a sewerage network for forcedly removing the inundation of the target area and time-dependently controlling the operation of pumps and opening/closing of the gates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the rainfall in a target area.
Detects inundation and runoff of rainwater due to rainfall based on data on topography, houses, land use, sewer networks, etc.
The present invention also relates to a real flood map system and method for detecting and predicting flood conditions and damage to houses and the like due to flooding, and further controlling management of forced drainage and the like.

[0002]

2. Description of the Related Art In recent years, with the expansion of urbanization in cities,
The situation is getting worse due to the frequent occurrence of heavy rainfall and the frequent occurrence of urban floods. Conventionally, rainfall analysis has been performed using rainfall data sent from the unmanned observatory “AMeDAS”, which is installed by the Japan Meteorological Agency and can measure rainfall at about 1300 points nationwide, and existing pipes, etc. are analyzed based on the predicted rainfall. Runoff calculation in the sewerage network, calculating the location of the inundation that exceeds the capacity of the canals and sewers, and forecasting the runoff model by forecasting the rainfall in the catchment area. The analysis has been carried out by using.

[0003]

However, in the conventional method, it is necessary to calculate rainfall using data in an area that does not always match the rainfall in the target area for analysis. There is a problem that a considerable error cannot be avoided in a result of performing a series of processes up to the analysis of the estimated runoff amount and the inland water analysis. Also, in the analysis of runoff, it is possible to calculate the runoff in the sewer network such as the existing sewer and predict and calculate the amount of flooding, but it is not possible to predict where the flooding will occur Therefore, there is a problem that it is not possible to prepare for a response in advance.

[0004]

According to the present invention, data is input by means of inputting past rainfall data data of the target area and inputting data transmitted from a water level meter / flow meter and a rain gauge installed in the area. Rainfall analysis means for patterning and detecting the actual amount of rainfall based on the data, as well as detecting past and future rainfall, and detecting the ground height etc. from input data such as white maps, digital maps, survey maps, etc. for the terrain of the target area A terrain analysis means, a means for inputting house situation data in the target area, and a means for inputting data on land use conditions in the target area, and a runoff analysis means for calculating a runoff amount from these data; Inland water analysis means and object for detecting inundation amount, inundation position and range based on analysis data of means, analysis data of terrain analysis means and data of existing sewer runoff Control means for calculating the discharge capacity of the pump in the sewer network for forcibly eliminating inundation in the area, and controlling the operation of the pump and the opening and closing of the gate in a time-series manner based on the calculated data. By reconstructing and superimposing the model on the basis of the survey data of the past inundation conditions and examining the suitability of the model, the inundation condition and inundation damage condition in the target area are detected and predicted, and the management of forced drainage is controlled. I tried to solve it.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a real inundation map system according to the present invention will be described below with reference to the drawings. The real inundation map system of the present embodiment is shown in FIG.
As shown in R, the central processing unit and internal storage
AM (Random Access Memory), R
An arithmetic processing unit (computer) 1 having a memory such as an OM (Read Only Memory) 1 and an input device 2 including a built-in hard disk and a keyboard, and an auxiliary storage device 3 including an external type including an optical desk and a magnetic disk. , And a display device 4 such as a color display device and an output device including a printer 5 and a plotter 6.

The auxiliary storage device 3 stores various programs for causing the arithmetic processing unit (computer) 1 to function as information input means, calculation means and result display means, and various data necessary for processing the various programs. Have been.

As a program for causing the arithmetic processing unit (computer) 1 to function as a means for calculating a real inundation map of the present invention, for example, a program for detecting rainfall analysis and inland water analysis based on input topographical information and the like Is stored. Arithmetic processing unit (computer)
Reference numeral 1 has a function of controlling the operation of a pump for forcibly draining the sewerage and the management of gate opening and closing based on programs, data, and the like stored in the auxiliary storage device 3.

Various programs and data are stored in, for example, an FD (Floppy Disk) or a CD-ROM.
(Compact Disk-Read Only
Memory) and read it into the auxiliary storage device 3 via a reading device. Also,
The data can be directly input from the input device 2 and stored in the auxiliary storage device 3.

In FIG. 1, reference numeral 7 denotes a rain gauge installed at an appropriate place in the target area, and reference numeral 8 denotes a water level meter and a flow meter. Data measured by the rain gauge 7 and the water level meter and the flow meter 8 are transmitted to telemeters 9a and 9b. The data is transmitted from a telecommunication means (public line) through the processor and is taken into the arithmetic processing device (computer) 1 in real time.

FIG. 2 shows an embodiment of a flow chart of the real inundation map of the present invention.

As information for rainfall analysis, data of past rainfall data of the target area and real data of a rain gauge 7 and a water level meter / flow meter 8 installed in the target area are taken.
The analysis results are stored in a database, and can be displayed and output as a patterned hightgraph of the actual rainfall and a hight graph of the past and future rainfall detection.

As information for performing terrain analysis, terrain data such as a blank map, a digital map, and a survey map of a target area is input, and as a result of the terrain analysis, the ground height is recognized as shown in FIGS. A contour map in which contour lines are displayed on a blank map, a gradient map in which the target area is subdivided into meshes as shown in FIGS. 5 and 6, and a gradient in each mesh is represented by an arrow indicating the direction of the gradient and a number indicating the gradient angle, In addition to the flow direction diagram showing the direction of the flow of rainwater over each mesh shown in FIGS. 7 and 8 by arrows, a bird's-eye view of a target area using a wire frame as shown in FIG. 9 is obtained and obtained at any time. It can be displayed and output.

Further, the data of the basin setting and the house condition setting are inputted to calculate the data in the target area, and the data obtained by grasping the present condition by the land use situation survey of the target area and the pattern-based hight graph of the rainfall result and the past and future. Calculates water level and discharge characteristics by automatically creating a water level and discharge characteristic curve that expresses the relationship between area, water level, and discharge at any point to be analyzed based on the rainfall detection hight graph data Perform runoff analysis to detect runoff of rainwater and create a hydrograph, from the existing sewer runoff calculated from the hydroworks of the existing system and the result data of the terrain analysis, the excess rainwater in the sewer network Reproduce inundation conditions by analyzing inland water to detect outflow locations and outflow volumes. Data obtained by investigating past inundation conditions are superimposed on this reproduced data to examine the suitability of the model, and changes in various setting conditions are fed back according to the examination results, resulting in a more detailed runoff analysis and inland water analysis. It predicts the situation, predicts the situation of flood damage, and controls the forced drainage by chronologically managing the pumps and gates in the sewer network. The inundation status and the like can be displayed and output as an inundation diagram in which the inundation status is displayed on a blank map by color coding and numbers as shown in FIG.

As described above, the topography of the target area is analyzed to calculate the amount of rainwater flooding and the basis for predicting the flooding point, and appropriate rainfall data relating to the target area is measured as digital data. Calculate rainfall distribution, report rainfall patterns, measure runoff and water level data closely related to rainfall conditions, calculate runoff from rainfall and water level, and calculate rainfall in the target area. The actual runoff and water level are associated with each other, and the runoff is superimposed on the basis of the topographical analysis results of the target area, and the runoff from the flooded position calculated by the existing system (Hydroworks) is also superimposed at the same time. Detects and predicts the location (point / range) and amount of inundation and detects the amount of inundation, and detects damage to the houses in the target area and the number of inundated units (on the floor / under the floor), inundated area of agricultural land, public facilities (main Damage of road, railways, and power supply facilities, etc.), disaster weak-related facilities (to detect, including the classification of damage such as hospitals and the disabled facilities, nursing homes, kindergartens, etc.) to predict,
It also calculates the pump capacity in the sewer network for forcibly draining the inundation volume in the target area, detects the timing of pump operation in chronological order with opening and closing the gate, and controls the start and stop management. It was.

Further, the recording medium of the present invention is an FD or CD-ROM in which a program for causing the arithmetic processing unit (computer) 1 to function as a calculating means, a display means, a control means, etc. of the above-mentioned real inundation map system is recorded. And other recording media.

[0016]

As described above, according to the present invention, the topographical analysis of the target area confirms the shape of the target area, and the appropriate rainfall data of the target area is measured.
There is an effect that a series of processes from rainfall analysis, runoff analysis, and inland water analysis can be obtained as highly accurate results that are actually adapted.

Based on the above results, the start / stop of the pump and the opening / closing of the gate in the sewer network are controlled and controlled in a time-series manner, so that damage due to flooding can be minimized. Is generated.

[Brief description of the drawings]

FIG. 1 is a schematic diagram for explaining a real inundation map system of the present invention.

FIG. 2 is a schematic diagram for explaining a flow.

FIG. 3 is a schematic diagram of a contour map showing heights in the terrain analysis.

FIG. 4 is a partially enlarged view of FIG.

FIG. 5 is a schematic diagram of a gradient map showing a gradient in a mesh in the terrain analysis.

FIG. 6 is a partially enlarged view of FIG.

FIG. 7 is a schematic diagram of a flow direction diagram showing a flow direction across a mesh in the terrain analysis.

FIG. 8 is an enlarged view of FIG.

FIG. 9 is a schematic view of a bird's eye view using a wire frame in the terrain analysis.

FIG. 10 is a schematic diagram of an inundation diagram showing an inundation situation in the terrain analysis.

[Explanation of symbols]

 1 is an arithmetic processing unit 2 is an input unit 3 is an auxiliary storage unit 4 is a display unit 5 is a printer 6 is a plotter 7 is a rain gauge 8 is a water level meter / flow meter 9 a, 9 b is a telemeter

Claims (9)

[Claims] 1. A rain analysis means for predicting and analyzing the behavior of rainwater in a time series from past and present rainfall data of an input target area, and a ground level of a topography of the area from a white map, a digital map, a survey map, etc. A terrain analysis means for three-dimensionally recognizing the terrain based on the input data, and a means for inputting house data and land use status in the area;
Analyze the topography of the target area based on the input / output data of each of the means, calculate the basis for predicting the flooding amount and the flooding point, and predict and classify the damage situation of houses and the like. Real inundation map system characterized by doing. 2. A means for taking rainfall data measured by a rain gauge installed on the site as digital data through an electric communication means such as a telemeter into a database as rainfall information of the target area; 2. A real inundation map system according to claim 1, further comprising: means for calculating a distribution pattern of rainfall by patterning. 3. Means for taking in flow rate data (water level, flow velocity) measured by a water level meter / flow meter as digital data as well as rainfall data and making it into a database, and calculating the inflow amount of rainwater flowing into a pumping station or a treatment plant from the data. Means for calculating, characteristics of water level and flow rate based on the flow rate (water level, flow velocity) data, means for detecting runoff and making a database, and calculating the runoff data and actual runoff quantity and water level. 3. The real inundation map system according to claim 2, further comprising: associating means. 4. A means for superimposing an outflow amount on the basis of the topographical analysis result data of the target area, and an outflow amount of the existing sewer showing an inflow amount and an inundation position of the sewer network of the existing sewer. 4. The real inundation map system according to claim 3, further comprising: means for detecting the amount of inundation, the location and range of inundation by simultaneously superimposing data, and means for making the detected data into a database. 5. The real inundation map system according to claim 4, further comprising means for detecting the inundation status and the damage status of the house in the target area based on the data of the inundation amount, the inundation position and the range. 6. An operation and a gate of the pump based on data on a calculated drainage capacity of a pump in a sewer network for forcibly draining the flood in the target area based on the data on the flood volume, the flood location and the flood range. The real inundation map system according to claim 4, further comprising control means for managing opening / closing of the chronological order. 7. A rainfall record based on data input by means of inputting past rainfall data data of the target area and inputting data transmitted from a rain gauge, a water level meter, and a flow meter installed in the area. Rainfall analysis means to detect past and future rainfall in a pattern, and to detect land height etc. from input data such as white maps, digital maps, survey maps, etc. Means for inputting house situation data, and means for inputting data on land use conditions in the target area, and runoff analyzing means for calculating a runoff amount of rainwater from these data;
Based on the analysis data of the outflow analysis means, the analysis data of the terrain analysis means and the data of the existing sewer runoff data, the inland water analysis means for detecting the inundation amount and the location and range of inundation and forcibly eliminating inundation in the target area Calculate the discharge capacity of the pump in the sewer network, and control means for managing the operation of the pump and the opening and closing of the gate in a time series by the calculated data, to reproduce the inundation situation and A real inundation map system characterized by detecting and predicting the inundation situation and inundation damage situation in the target area by examining the suitability of the model in combination with the survey data and controlling the management of forced drainage. 8. A rainfall record based on data input by means for inputting past rainfall material data of the target area and inputting data transmitted from a rain gauge, a water level meter, and a flow meter installed in the area. Detects past and future rainfall, detects ground height, etc. from input data such as blank maps, digital maps, survey maps, etc. for the topography of the target area, and detects house status data and land use status in the target area Calculate the amount of rainwater runoff from these input / output data, and compare the calculated data and the detected data such as the ground height with the data of the existing sewer runoff to obtain the inundation amount and the inundation position and range. And the discharge capacity of the pump in the sewer network for forced drainage of inundation in the target area is calculated. Inundation prediction and drainage characterized by detecting and predicting inundation conditions and inundation damage conditions in the target area and controlling forced drainage management by managing the opening and closing of gates and the like in chronological order. A way to manage. 9. A computer-readable recording medium storing a program for causing an arithmetic processing unit (computer) to execute the method according to claim 8.