KR100828968B1 - Method connected to gis for maintaining and managing sewage pipe and system with function thereof - Google Patents

Abstract

A sewer maintenance method linked with a GIS(Geographic Information System) and a sewer maintenance system equipped with the same are provided to improve correctness, reliability, and convenience for maintaining sewers and other underground facilities by securing and searching fast/present spatial and engineering data needed for numerically analyzing a sewer network through link with the GIS. A sensor measures/transmits a flow rate, a water level, a rainfall, a deposit level, and a water quality at important sewers selected periodically or in response to a request. A plurality of site control panels(100-100n) comprises a controller receiving measurement, and a DSU(Digital Service Unit) or CDMA(Code Division Modulation Access) modem for transmitting the measurement through the wired/wireless network. A database operation server(500) stores the measurement to a database by each measurement point. A GIS engine(700) exchanges spatial/engineering data through a switching hub(400). A management analysis server(600) and an operation server(800) analyzes, estimates, and simulates the data of a predetermined section of the sewer based on the measurement and the spatial/engineering data.

Description

Sewer maintenance system linked with geographic information system and sewage management system with its functions {METHOD CONNECTED TO GIS FOR MAINTAINING AND MANAGING SEWAGE PIPE AND SYSTEM WITH FUNCTION THEREOF}

The present invention relates to a sewage pipe maintenance method associated with a geographic information system and a sewage pipe maintenance system equipped with the function thereof. More specifically, the present invention relates to the spatial data / engineering required for the analysis of sewage pipe network repair in connection with a GIS. By updating and storing data, you can compare and search past and present data regardless of time and space and use it as business effect and verification data.When connected with GIS, you can not only sewage network but also underground water, gas, Geographic information system that can improve the accuracy, reliability, safety, and convenience when maintaining sewage pipes and other underground facilities by integrating the construction status and basic information of underground facilities such as electricity, communication, heating, etc. Related to the sewage pipe maintenance system and its sewage pipe maintenance system with its functions. .

In general, sewage pipe maintenance and sewage related projects are socially based projects that are closely related to human life, while domestic sewage pipe maintenance projects have design errors due to poor sewerage management, lack of quantified basic data, and difficulty in establishing countermeasures for rainfall runoff. As the necessity of the sewage pipe maintenance system emerges due to problems such as the occurrence of I / I and leakage, difficulty in determining the timing of repair and repair, and selection of business priorities by promoting the treatment center-centered business, many projects are planned, designed, constructed, It is being applied at the operational stage.

In the sewage pipe maintenance system, field measuring instruments such as flow rate, flow rate, water level, rainfall information, etc. for each point of the target area preset in the treatment area and rainfall snow gauge are divided into the field water quality part and the flow measuring system. On-site measurement data is sent to a remote DB server and managed through storage in memory or periodic backup process, and the management analysis server inside the sewage pipe maintenance system performs instrument verification after verifying the verification and reliability of these data. Data analysis will be conducted in parallel with the basic data for each section (sewage facility status, CCTV data, etc.). Based on the results of this analysis, I / I, leakage level, and performance guarantee level of sewage pipes can be reviewed, and it is common to provide basic data for future maintenance plans and repairs by providing basic data for evaluating water capacity and predicting flooding. This is the basic purpose of the sewage pipe maintenance system.

On the other hand, sewage pipe is an environmental foundation facility that transfers sewage from the watershed to the sewage treatment plant, and rainwater is discharged to public waters.These sewage pipes are buried underground, so it is not easy to grasp the state of the sewage pipes after construction. Conventional methods for investigating the condition in sewage pipes have been visually investigated, CCTV cameras have been photographed inside sewage pipes, or mechanical measuring equipment has been used.However, these methods have many problems such as cost and accuracy. The treatment efficiency of the terminal facility has been reduced, and comprehensive sewage pipe maintenance and continuous management are required at a more fundamental level.

In addition, recently, a case of constructing a sewer pipe network by using a Geographic Information System (GIS) and a CAD program has been attempted when constructing a sewage pipe maintenance system. The geographic information system collects, stores, and analyzes geographic data. And it is a computer application system that can be output, the system to store all the information about the geographic space in the computer and based on this to make efficient decisions about the space in which human lives.

However, the conventional sewage pipe maintenance system interworking with the geographic information system applies the sewage pipe network of the sewage pipe maintenance system to be changed at the same time when the sewer pipe network changes in the geographic information system, thus requiring high costs for maintenance and updating of the system. In addition, there is a problem that only the editing and database of the terrain data in the current state can be made by using the historical data before the sewage network change in the geographic information system.

The present invention has been made to solve the above problems, an object of the present invention is to update and store all spatial and engineering data of the past and present required for the analysis of sewage pipe network in connection with the GIS in the sewage pipe maintenance system. Through the GIS connection, the construction status and basic information of underground facilities such as water supply, gas, electricity, communication, and heating, as well as the sewer pipe network, can be integrated and searched for sewage pipes and other underground. It is to provide a sewerage maintenance management method linked with a geographic information system that can improve accuracy, reliability, safety, convenience, etc. in the maintenance of facilities, and a sewerage management system equipped with its functions.

In order to achieve the above object, the present invention comprises the steps of transmitting the database of the measured data for each point in the sewage pipe through the field control panel (100-100n) using the measuring sensor of the field; Selectively displaying geographic data, information management items, spatial data / engineering data, etc. provided by the geographic information system in association with the geographic information system; The data provided by the geographic information system are updated periodically or automatically by using a pop-up window according to the operator's predetermined period of time, or when the operator manually updates using the setup window and when the data provided by the geographic information system is updated. It is a basic feature of the technical configuration that consists of the steps of storing the historical data before updating so that the historical data can be retrieved and activated when necessary.

As described above, the present invention is a sewage pipe maintenance method associated with the geographic information system and the sewage pipe maintenance system equipped with the functions of the present invention is a spatial data / past and present necessary for the analysis of sewage pipe network in connection with the GIS in the sewage pipe maintenance system By updating and storing engineering data, past and present data can be compared and searched regardless of time and space, and can be used as business effect and verification data.In connection with GIS, water and gas buried underground as well as sewer pipe network By integrating the construction status and basic information of underground facilities such as electricity, communication, heating, etc., it is possible to search and search, thereby improving accuracy, reliability, safety, convenience, etc. in the maintenance of sewage pipes and other underground facilities. have.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention configured as described above are as follows.

1 is a main configuration of the sewage pipe maintenance system according to the present invention, Figure 2 is a view showing a main screen associated with the geographic information system sewage pipe maintenance system according to the present invention, Figure 3 is a sewage pipe according to the present invention FIG. 4 is a view showing a screen displaying a popup window for updating a data in association with a geographic information system, and FIG. 4 is a view showing a screen for inquiring a result of linkage between a sewage pipe maintenance system and a SWMM according to the present invention. 5 is a flowchart showing an embodiment in which the sewage pipe maintenance system according to the present invention is utilized, and FIG. 6 is a view showing a screen that is inquired by underground facilities in connection with a geographic information system in the sewage pipe maintenance system according to the present invention. to be.

As shown in Figure 1, the sewage pipe maintenance system of the present invention is installed in the main sewage pipe selected as a measuring point to measure and transmit the flow rate, water level, rainfall, deposition amount, water quality, etc. at a certain period or the request of the system operator Data measured through a series of measuring sensors are transmitted to the controller in the field control panel 100-100n and the controller in the field control panel 100-100n transmitted through RS communication for serial data communication between computers and related devices. The transmitted data are transmitted in real time to the DSU 200 of the sewage pipe management system through wired / wireless communication networks such as KT dedicated lines through a DSU or a CDMA modem, and the transmitted data are again transmitted to the terminal server 300 and the switching hub 400. DB connection in the sewage maintenance management system which performs data exchange by means of data exchange and makes database the data quantified by the relevant sewage points. On the basis of the data measured and transmitted through the GIS engine 700 and the measurement sensor that exchanges the spatial data / engineering data by the server 500 and the switching hub 400 and the spatial data / engineering data provided by the GIS It consists of a management analysis server 600 and an operation server 800 for analyzing and predicting data in sewage pipes in a certain section.

On the other hand, Figures 2 and 3 is a view showing a screen associated with the geographic information system sewage pipe maintenance system according to the present invention, GIS engine 700 in connection with the management analysis server 600 inside the sewage pipe maintenance system As this is independently added, the screen configuration of the sewage pipe maintenance system is constructed in connection with GIS.The geographic data and information management items provided by GIS (sewer manhole, sewer pipe (branch line, trunk line, tea house), culling and clearing, etc.) ) And spatial data (Kwanjewon (Kwanjing / Landing Standards / Length of Construction / Grownment Gradient / Columnity Coefficient), Manhole Specifications, Geotechnical Levels and Sites, Subwatershed Area, Digital Elevation Model (DEM), Land Use, Soil Map, River plan flood level) and engineering data (rainfall or rainfall intensity, runoff coefficient, roughness coefficient, infiltration) are optionally displayed on the screen.

In addition, the data provided by GIS can be updated by using a pop-up window periodically and automatically according to the setting of a certain period of time, and the past data before the update can be saved and the past data can be retrieved and activated when necessary. . In addition, if necessary, the system administrator can use the setup window to manually update and save and use the historical data.

As described above, the characteristics of the sewage pipe maintenance system of the present invention which can be updated while reading data generated on the GIS and storing or deleting the past data are referred to as 'CRUD (Create, Read, Update, Delete) system'. The application of the CRUD system to the sewerage maintenance system, unlike the system in which the sewerage management system is integrated with the GIS, enables independent maintenance between the sewage management system and the GIS engine, thereby reducing costs and making it easier to update. In addition to providing a historical analysis and past analysis through the database of historical data, it is possible to provide a system that meets the needs of the system operator through various analysis in time and space.

Next, the operating server 800 is installed SWMM (Storm Water Management Model), which is a sewage pipe network hydraulic analysis model program that can be used for sewage pipe data analysis, the SWMM is generated due to rainfall accidents in the original city basin Ground and subsurface flows for runoff and pollutants, tracking runoff in drainage networks, estimating reservoirs, treating pollutants and calculating costs, and taking into account the various land use conditions, the outlets and sewer pipes or waterways of the watershed. It is a program that can predict runoff and water quality from a stream, and can simulate a single rainfall event as well as a continuous simulation.While the flow calculations are highly detailed and show good agreement with the observations, the water quality calculations show the actual physical, chemical and biological processes. It may not be well represented and may differ from the observations.

In brief, the SWMM is composed of five execution blocks and auxiliary blocks. The executive block, which is an execution block, controls other execution blocks and transmits data between blocks, and the runoff block, which is an execution block, This is the initial operation of the SWMM model. It simulates runoff and water quality changes in the drainage basin for rainfall events. The transport block, which is an execution block, uses the results of the runoff block as basic data. It tracks the flow and pollutants in the sewage system, calculates the penetration into the sewage system, and the execution block Extran block tracks the flow in the channel and irrigation channels for the flow and depth calculation in the drainage network system. The storage block evaluates the effects of the control and treatment equipment on flow rate and water quality. In addition, the statistic block is a factor analysis using the weibul formula, the graph block is a hydrological and pollution curve output, the combine block is an interface file management, the rain block is a temporal and temporal distribution of rainfall, and the temp block is an auxiliary block of temperature.

Therefore, the measurement data transmitted from the measurement sensors installed in the main sewage pipe and the spatial data / engineering data provided by the GIS may need some correction due to a malfunction of the device or an error in the communication network. The system operator searches and selects the spatial data / engineering data provided by linkage with the GIS and the past and present measurement data, which are required for SWMM, a sewage pipe network hydraulic analysis model linked with the system, and built through a database. Figure 4 shows the screen used for designing the sewage pipe network, reviewing and verifying the occurrence of abnormalities. That is, data for the spatial data / engineering data provided through linkage between the past and present measurement data and GIS is set for SWMM modeling, and the result of the sewage pipe maintenance management of the present invention is linked to GIS and SWMM through SWMM modeling analysis. The system configuration screen will be displayed.

Here, the present inventors sewage pipe maintenance system is a basic function of data collection / storage, screen processing and monitoring, conditional search, data correction and backup, alarm function and additional functions such as intrusion / inflow calculation, leakage and raw unit calculation, CCTV video In addition to inquiries and data management, offline data analysis, business effect verification, inundation prediction, water quality and basic data input and output, dredging time prediction, facility history management, and so on, sewage pipe maintenance system using SWMM Review of water supply capacity through pipeline hydraulic calculation and derivation of pipeline design factors, analysis of river discharge and pollutant load during rainfall, construction of basic data of basic plan for total amount of water system, analysis of inundation frequency and rainfall condition in wet-water inundation damage area during rainfall, maintenance of sewer pipe network The results of the sediment management related to this can also be viewed in detail. Ryusu sewer treatment during the introduction of real-time control system such facilities can also take advantage of the sewer maintenance system using a hydraulic analysis models.

Hereinafter, referring to FIG. 5, a method of predicting a future amount of sedimentation in sewage pipes, which is an embodiment in which the present invention is utilized in connection with the GIS and SWMM, is provided.

In sewage pipes where sewage flows in for a certain period of time, sediment and sediments accumulate due to the lack of proper sewage flow rate and reverse gradient of sewage pipes. In order to predict the sedimentation amount in sewage pipes using current and historical spatial data / engineering data and SWMM provided in conjunction with data and GIS, first of all, the long-term rainfall runoff analysis for the sewage point and annual inflow soil Predictions (such as RUSLE Models) and soil size surveys should be made.

Next, the amount of sediment forecast is estimated by using the flow and sediment depth data transmitted through the flow meter and sedimentation depth meter in the field, and the current and past spatial data and engineering data provided by the GIS as basic data to identify the characteristics of sewage pipes. In simulation, the correction factor of the SWMM calculation coefficient is adjusted, and through this, it is possible to predict the future depth (h ₁ ) including the depth of deposition, and when the adjustment of the SWMM simulation coefficient using the measured accumulation amount is completed, the deposition amount is predicted. You are ready to run the simulation.

In addition, the main governing equations used to perform the calculation of pure water depth (h ₂ ) without sediment amount in the simulation of sediment amount estimation through SWMM are composed of the following Manning and continuous equations.

Where S ₀ Is the slope of the pipe, A is the flow cross section, R is the hydraulic radius, n is the roughness coefficient of the pipe, Q is the flow rate and t is the time. The slope and roughness coefficient of the pipe line are spatial data provided by the GIS.

The flows in Equations 1 and 2 are regarded as normal flows, and Q and A, which are unknown in cross sections, are calculated for each point after an analysis time through the difference analysis of the two equations. On the basis, the system operator can determine the current or future deposits and the appropriate dredging time for each sewage site.

Looking at the detailed analysis process through the SWMM according to the difference between the two equations as follows.

First, the cross-sectional area at position j where the known flow rate value is Q is A _j. And A _j Can be obtained from Equation 1 and the known flow rate value Q _j , assuming that the position of the downstream part of the conduit is j + 1, the current known time zone of the time difference is indicated by the subscript n and the next time zone is n + 1.

Subsequently, assuming that the weight of j + 1 position is Wx and the weight at n + 1 time interval is Wt as the weight of differential analysis, the equation is differentially calculated as in Equation 3.

Here, Q _{j , n} , A _{j , n} are known values, and Q _{j +} at the point j + 1 in the continuous equation of Equation 2 is assumed if the flow rate changes only in the flow direction without change of time in the normal flow. _1, it can be seen for _n, Q _{j + 1, and} if we find _n, when the energy line, assuming that the normal flow soon given that matching the inclined pipe, roughness number n and the channel slope S ₀ Since A _{j + 1, n} can be obtained from Equation _1, A _{j , n + 1} after elapse of n + 1 hours can be obtained by assuming only the change of time without fluctuation of flow. In addition, the flow rate value Q _{j , n + 1} under the normal flow condition is obtained through Equation 1.

In order to know Q _{j + 1, n + 1} and A _{j + 1, n + 1} corresponding to the flow rate and area at the downstream position j + 1 after the time n + 1 flow _, Multiply by Δx / Wt and determine the unknown Q and A by dimensioning the flow rate and area at the time of pipe drainage, respectively Q ^* (= Q / Q _f ), A ^* (= A / A After defining it as _f ), if it is applied to Equation 3, the following simplified expression is obtained.

Where C ₁ is a function of area and flow rate, and C ₂ is Q ^* and Coefficients arranged by A ^* , which are known values in each time zone.

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이다.

to be.

Q / Q _f in Manning's equation because the calculation was performed assuming normal flow And A / A _f Is a linear functional relationship, and Q _{j + 1, n + 1} and A _{j + 1, n + 1} , which are unknowns, are represented by Equation 4 and dimensionless runoff-area (Q / Q _f). A / A _f ) relationship, that is, it can be obtained from Manning's formula.

Through this method it is possible to know the current or future flow cross-sectional area A at the desired point in the sewer pipe, and to estimate the depth h ₂ through the inversion of the area calculation equation, where h ₂ Is pure depth without accumulation. Therefore, the current or future sedimentation depth (h) for each sewage point is the h ₁ at the corresponding point and time. It can be judged by the difference between and h ₂ .

Therefore, using the current or future sedimentation depth (h) for each sewage point, the sedimentation amount is set as a ratio of the total amount of sewage pipes of each sewage pipe, and the amount of sediment over time by setting the prediction period is simulated. This simulation method allows the operator to check the trend of sewage sediment deposition by point on the screen for a certain period in the future in order to determine the appropriate dredging time and dredging amount of the relevant watershed sewage pipe objectively and quantitatively. It can serve as a decision support role to provide evidence.

On the other hand, in the city, six underground facilities such as water supply, gas, electricity, communication, and heating are scattered and buried in the city, and these underground facilities are located in accordance with the change of the ground phenomenon after a certain time. In many cases, it is difficult to grasp, and damages and accidents occur frequently due to the outflow phenomenon caused by groundwater movement of buried ground or corrosion of the pipe itself, which threatens safety.

Therefore, as shown in Figure 6, the present invention sewage pipe maintenance system, as well as the sewer, the construction status and basic information of the six underground facilities, such as water, gas, electricity, communication, heating, in addition to the pre-built GIS By integrated management, it is possible to search for information of each underground facility, expand / reduce required points, output after searching for each facility, and use it as necessary data for maintenance of underground facilities. Managed items are shown in Table 1 below.

Underground facilities Information management item sewer  Sewer manhole, sewer pipe (branch line, trunk, tea house), culvert and clearing waterworks  Water supply manhole, water pipe, water tunnel, fire hydrant, water tower gas  Gas manhole, gas piping, pressure regulator Electricity  Electric manhole, pipeline, transformer, underground ring Communication  Communication manhole, Communication line, Communication underground line, Communication port heating  Heating Manhole, Heat Pipe, Leak Detector Installation, Handhole

While specific preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and a person skilled in the art to which the present invention pertains has the technical gist of the present invention. Various changes can be made without departing.

1 is a main configuration of the sewage pipe maintenance system according to the present invention.

2 is a view showing a main screen associated with the geographic information system of the sewage pipe maintenance system according to the present invention.

3 is a view showing a screen that displays a pop-up window that the sewage pipe maintenance system according to the present invention can update the data in conjunction with the geographic information system.

Figure 4 is a view showing a screen in which the connection result of the SWMM and SWMM maintenance system according to the present invention is inquired.

5 is a flow chart showing an embodiment in which the sewage pipe maintenance system according to the present invention is utilized.

Figure 6 is a view showing a screen inquired by underground facilities in connection with the geographic information system in the sewage pipe maintenance system according to the present invention.

Explanation of symbols on the main parts of the drawings

100-100n: Field control panel 200: DSU

300: terminal server 400: switching hub

500: DB operation server 600: management analysis server

700: GIS engine 800: production server

Claims (5)

In the sewage pipe maintenance method, which provides basic data for the sewage pipe maintenance plan and repair, Transmitting the measured data for each point in the sewage pipe via a field control panel (100-100n) using a field measuring sensor and making it into a database; Selectively displaying geographic data, information management items, spatial data / engineering data, etc. provided by the geographic information system in association with the geographic information system; Updating the data provided by the geographic information system using a pop-up window periodically or automatically according to a predetermined period of time set by the operator or manually updating by the operator using a setup window; When the data provided by the geographic information system is updated, the historical data before updating is stored so that the historical data can be retrieved and activated when necessary. It utilizes spatial data / engineering data provided through linkage between the past and present field measurement data and geographic information system as an optional input data, and through SWMM, a sewer pipe hydraulic analysis model installed in the operation server 800. Review of water supply capacity through pipeline hydraulic calculation and derivation of pipeline design factors, analysis of river discharge and pollutant load during rainfall, construction of basic data of basic plan for total amount of water system, analysis of inundation frequency and rainfall condition in wet-water inundation damage area during rainfall, maintenance of sewer pipe network Related to the amount of sediment management The step of performing sediment management related to poor maintenance of sewer pipe network through SWMM, the sewer pipe hydraulic analysis model, Based on the sedimentation depth data and flow rate measured for each point in the sewage pipe received through the sedimentation depth meter and the flow meter using the field control panel (100-100n), the correction factor of the calculation coefficient in the SWMM is adjusted and the future includes the sedimentation depth. Predicting a depth h ₁ of; In order to simulate the future pure depth h ₂ without deposition amount through SWMM at the measured deposition depth point, Equation 2

Equation 3 obtained by differentially analyzing

Multiply each term in by Δx / Wt, where Q and A are dimensionless with the ratio of flow rate and area at the time of pipe drainage, respectively, Q ^* (= Q / Q _f ), A ^* (= A / After defining A _f ), the equation (4) is applied to equation (3).

(here,

ego,

), Equation 1

And the current or future flow cross-sectional area A at a desired point by calculating the flow rate Q and the flow cross-sectional area A in the sewage pipe cross section at the position j, j + 1 time n, n + 1 using the equations (2) to (4). It can be seen that the future pure water depth h ₂ without deposition amount is predicted through the inversion of the area calculation formula and Current or future sedimentation depth h for each sewage point is composed of the steps that can be determined through the difference between the h ₁ and h ₂ at the corresponding point and time, the sewage maintenance associated with the GIS Way. delete The method of claim 1, Integrated management of underground facilities such as water supply, gas, electricity, telecommunications, and heating, as well as sewage systems, integrated with the geographic information system, enables the search and output of information on each underground facility, expansion / reduction of necessary points, and search by facility The sewage pipe maintenance method associated with the GIS, characterized in that the step is further configured. delete A series of measurement sensors installed in major sewage pipes selected as measurement points for measuring and transmitting flow rate, water level, rainfall, accumulation amount, water quality, etc. at regular intervals or at the request of a system operator; A field control panel (100-100n) configured of a controller for transmitting the measurement data and a DSU or CDMA modem, which is equipment for transmitting the data transmitted to the controller through a wired / wireless communication network; A DSU 200 through which measurement data are transmitted through the wired / wireless communication network; A DB operation server 500 which allows the terminal server 300 and the switching hub 400 to perform exchange of the transmitted measurement data to be databased into data quantified for each sewage pipe point; A GIS engine 700 for exchanging spatial data / engineering data by the switching hub 400; Based on the data measured and transmitted through the measurement sensor and the spatial data / engineering data provided by the geographic information system, the management analysis server 600 and the operation server 800 analyze and predict the data in the sewer pipe in a certain section. While being configured, the sewage pipe maintenance system associated with the GIS, characterized in that performing the method of claim 1.

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