KR101567540B1 - Failure probability adjustment type gis-aided sewerage asset management method - Google Patents

Abstract

The present invention relates to a sewerage asset management method, which can adjust failure probability of an asset by applying empirical aging aspect per asset type, and can determine degree of danger on the basis of degree of severity and the failure probability, by classifying each component of a sewerage facility from a sewage conduit to a sewage disposal plant as an individual asset systematically, and setting the degree of severity according to the damage of a random asset within a planning analysis range by establishing spatial position or arrangement information and hydraulic connection information of the asset concretely and precisely on the basis of a geographic information system (GIS). Through the present invention, it is possible to establish and use an organic connection structure of the sewage facility asset systematically, and it is possible to predict the result caused by the damage of the asset accurately and at the same time to calculate predicted damage time or failure probability per asset accurately. And, it is possible to use available resources and finances efficiently and to maintain the service level stably, through rapid and overall analysis as to the total sewerage asset.

Description

[0002] FAILURE PROBABILITY ADJUSTMENT TYPE GIS-AIDED SEWERAGE ASSET MANAGEMENT METHOD [0002]

The present invention relates to a method of sewerage asset management, in which each component of a sewerage system from a sewerage inflow section to a sewage treatment plant is systematically classified as an individual asset, and the spatial and temporal characteristics of the property are classified based on a geographic information system (GIS) Location and placement information and hydraulics connection information are set up specifically and precisely to set the degree of damage according to the destruction of arbitrary assets within the scope of the plan analysis and to adjust the probability of asset destruction by applying an empirical over time variation pattern by asset type, The risk is determined based on the degree of damage and the probability of failure.

Asset management for social infrastructures refers to the optimization of decision making in the lifecycle of social infrastructures consisting of acquisitions, operations, maintenance, repair and maintenance, and the overall operation of social infrastructures from construction to disposal. , It is possible to obtain the effect of not only efficient resource allocation for individual assets constituting the facility, but also cost reduction in maintenance of service level through preemptive investment.

In particular, the sewage facilities are essential basic living services, and they are not only seriously damaging the flood water and the environment at the time of stopping the service, but also requiring a great time and cost for normalization Various attempts have been made to introduce asset management techniques to the construction and management of sewage facilities, to identify risk factors in advance, determine the priorities for input of available resources, and enable effective enforcement. Patent No. 1092883 can be mentioned.

Conventional sewerage asset management methods including patent No. 1092883 are used to quantify the deterioration of sewerage facilities, in particular, the pipe network, and based on this, it is judged whether or not the relevant pipes are repaired. This is a passive decision support method in which the degree of aging is calculated in such a way that the score for each item is calculated and thus the investment status is simply determined.

In other words, there is no significant difference from the estimation of the usable life expectancy of the facilities in the general facility management technique prior to the introduction of the asset management system. In addition to the huge cost of the investigation and the cost of post-processing, it is impossible to survey the whole sewerage system including the sewage system. Therefore, there is a serious defect in the reliability of the sewage system. The effect that can be achieved through allocation of resources and resource prioritization using conventional sewage asset management techniques has been extremely limited.

In particular, the sewage facilities are connected to each other by dendritic or networked interconnections to perform close interaction. In addition to the specifications and characteristics of the individual assets constituting the entire facility to be managed, Although it is necessary to grasp the structure accurately, the existing sewer asset management method focuses on the systematic collection and management of individual asset information. However, it is insufficient to establish a concrete and accurate information system on the organic connection structure of the whole sewerage assets .

Therefore, efforts are being made to establish a sewer asset management system based on location information by combining sewer asset management and GIS (Geographic Information System). However, due to the inherent limitations of GIS based on simple coordinate type spatial information, The utilization of the asset was inevitably limited, and it was not enough to extract the concrete relationships between the individual assets constituting the whole sewerage system and use it for the damage setting by destruction of the assets .

In particular, as described above, conventional sewage asset management methods are to determine the priorities of investment such as repair and maintenance based on the numerical value of the deterioration probability of each asset constituting the sewage facility as described above, By applying a linear relationship that is simple in proportion to the period of use, the probability of failure is over- or underestimated at the predicted time point, resulting in an inefficient allocation of available resources, There is a problem in that waste of the liquid is caused.

The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide an information processing system and a sewage management system, in which space information, specification information and history information of an asset constituting a sewerage facility are collected and stored as asset information in a database built in a computer, The program comprising: an asset DB module for storing asset information of a sewerage facility; a GIS module for storing asset-specific location information; an asset DB module and a GIS module A location information extracting step (S11) of extracting location information of the sewerage property from the GIS module and executing a program, A virtual asset creation step (S12) of adding a virtual asset according to a state, and a virtual asset creation step (S13) updating the asset information, updating the asset information in the asset DB module, extracting the asset information by the asset DB module, collecting the assets by the asset, and setting the damage level according to the size of the consolidated assets A failure probability setting step (S22) of setting a failure probability by assigning asset-specific history information to a failure probability determination curve having a characteristic factor of a peak value, a base value, an available soft limit and a stabilizer, (S30) of calculating the risk by combining the probability of failure and the calculated risk of each asset in the asset DB module (S30).

Through the present invention, it is possible to systematically establish and utilize the organic connection structure of the sewage facility assets, accurately predict the result of the destruction of the property, and accurately calculate the estimated time of destruction or the destruction probability for each asset , It is possible to utilize available resources and resources efficiently and maintain stable service level through rapid and comprehensive analysis of the entire sewerage assets.

In particular, it is possible to systematically and precisely construct information on the connection structure between all the assets, as well as the specifications and characteristics of the individual assets that make up the sewage facilities. By applying virtual assets, It is possible to systematically establish and utilize structural information and to easily grasp the sum or mode of other assets related to arbitrary assets. Therefore, it is possible to quickly and accurately calculate the damage caused by the destruction of the asset, .

In addition, in calculating the risk by asset, risk is assessed based on empirical information such as changes in stability over time, based on the characteristics of the asset, without applying a uniform asset life based on the linear relationship between the period of use and the probability of failure, It is possible to dramatically increase the accuracy (degree of accuracy) of risk estimation, thereby preventing the input of resources to unnecessary points and efficiently allocating and utilizing available resources and resources.

1 is an exemplary configuration diagram of a program for carrying out the present invention;
2 is a flow chart
3 is an example of an execution screen of a program for carrying out the present invention
4 is an exemplary screen view of a program for carrying out the present invention in which a drainage zone is indicated;
5 is an exemplary screen view of a program for carrying out the present invention,
6 is an exemplary screen view of a program according to the present invention in which asset information is displayed;
7 is an exemplary screen view of a program for carrying out the present invention in which a partial enlargement state is displayed
8 is an exemplary screen view of a program for carrying out the present invention in which the actual pipe connection status is indicated
Fig. 9 is an exemplary screen view of a program for carrying out the present invention in which a virtual manhole is displayed. Fig.
10 is a diagram illustrating a screen of a program for carrying out the present invention,
Fig. 11 is a diagram for explaining the risk calculation method of the present invention
12 is a graph showing an example of a failure probability determination curve of the present invention
Fig. 13 is a graph showing a comparison curve of the probability of breaking the tube type according to the present invention
Fig. 14 is an exemplary screen view of a program for carrying out the present invention,
15 is an exemplary screen view of a program for carrying out the present invention in which the risk level of each asset is shown

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a computer program for carrying out the present invention. As shown in FIG. 1, an asset DB module including asset information constituting a sewerage facility, a GIS module containing location information by asset, DB, and GIS module, and a program configured by a processing module for fetching, processing, and updating necessary information is mounted on the computer to perform the present invention.

The present invention collects connection information, specification information, and history information of the assets constituting the sewage facility and collects them as asset information in a database built in a computer, and the asset information stored in the database is processed as a program mounted on the computer, The sewerage system is composed of the facilities in the sewer system, including the facilities on the sewer system, the sewerage system, the sewerage system, the sewage system, Includes facilities on excellence routes such as toilets (rain water discharge chambers), storm water pipes, toilets and lagoons, and associated facilities such as manholes, relay pumping stations and reverse siphons installed in sewer pipes or bridges. .

However, in the case of facilities at the beginning of the sewer system, such as the initial pipeline or the storm sewer system, it may be excluded from public management because it is managed as a private facility or directly connected with private facilities. As a matter of fact, Lt; / RTI >

As in the dictionary meaning, the asset information means information about each asset. The asset information is composed of connection information, specification information, and history information of the corresponding asset. As shown in FIG. 1, And the asset DB module updates the asset information in response to a request from the processing module in response to a request from the asset DB module.

In addition, the GIS module is constituted by a program for carrying out the present invention. The GIS module plays a role of providing location information for each asset to the processing module so that connection information among the asset information recorded in the asset DB module can be generated , And an integrated GIS in which all public facilities are included.

The GIS module of the program for carrying out the present invention may be constructed as a non-general-purpose closed GIS having a unique format and a driving procedure, but the same data format and system protocol as the existing public GIS may be applied, It is desirable to be able to easily obtain the sewage-related location information from the GIS.

The present invention, which is performed through a computer program in which asset information and location information are combined, is started in a location information fetching step S11 in which a program is executed and location information of a sewerage asset is extracted from the GIS module .

As shown in FIG. 1, the computer of the present invention is equipped with a GIS module together with an asset DB module, and the GIS module includes a sewer system, such as the sewer system, the sewer system, the sewage system, In the location information extraction step S11, a computer program, specifically, a processing module of a computer program receives the location information of each asset from the GIS module, And generates asset-specific connection information in a virtual asset creation step (S12) and an asset information update step (S13), which will be described later, and is recorded in the asset DB module.

As described above, the GIS module of the present invention in which the location information of the sewerage asset is stored can be constructed in the form of extracting the sewerage related part from the public GIS operated by the state or local government, It is possible to exchange information between the existing public GIS and the GIS module of the present invention by constructing by applying the system protocol. Currently, a large number of public institutions construct public GIS for their facilities and utilize them. Most of these public GIS Adopts a standardized data format and a system protocol. Therefore, in constructing the GIS module of the present invention, it is possible to save time and cost by utilizing the public GIS constructed beforehand.

The location information of the sewage asset extracted from the GIS module in the location information extracting step (S11) can be referred to as coordinates on the spatial position of the sewage facility, that is, the topographical map as in the normal public GIS. The computer program for carrying out the present invention can output the status of the sewerage assets in the management subject area as shown in FIG.

FIGS. 3 to 5 are diagrams for explaining how the sewage asset management method of the present invention is performed by a subject who provides a sewage service to a certain treatment area such as a self-governing body or a treatment station jurisdiction In this figure, an initial screen showing the entire processing area under the control of the service providing entity is illustrated. In this way, in outputting the sewerage assets in the processing area, the geographical elements such as the terrain or the boundary of the area and the respective assets By layering and processing, the specific output state can be adjusted in such a manner that the user selects the required layer.

In the provision of the sewer service, the treatment area, which is ordinarily set as a jurisdiction of the individual sewage treatment plant, may be divided into a plurality of drainage areas (drainage areas) depending on the arrangement of the river shape, drainage structure, area, and each drainage zone is divided and managed again with multiple drainage catchment areas as shown in FIG.

In the computer program for carrying out the present invention, each sewerage asset is provided with a symbol and an identification code as shown in legend form in the lower right of Figs. 3 to 5 and Figs. 7 to 9, One identification is possible.

In the illustrated embodiment, the identification code includes a treatment station, a main pipe, a branch pipe, a stormwater pipe, a pumping station, a manhole, MP, BP, SP, PS, MH, OC, and DP are assigned to the overflow chamber and the detention pond, respectively, As a user selects or excludes a layer, the asset is displayed on the computer screen or is erased from the computer screen.

In the case of the above-mentioned sewerage facilities, the excellent pipe pipe is a pipe which excludes the excellent quality in the sewage sewerage and is managed separately from the sewer pipes of the sewer pipe and the combined sewer pipe, and the sewage and the initial storm water are separated and transferred in the combined sewer pipe The subcenter is managed as an interstate.

FIG. 4 is a view showing a drainage area F on the southwest side of the entire treatment area of FIG. 3 selected and outputted. As shown in FIG. 4, 7 shows a catchment area divided into a catchment area and a drainage section located on the southeast side of the drainage section in the drawing is selected and enlarged and output is shown in FIG.

As shown in the upper right part of FIG. 5, the selected stratum is a trunk line (MP), a branch line (BP), an excellent pipeline (SP), a relay pump station (PS) (MH), and the excellent toys (OC) are not displayed on the screen because they are excluded from the output layer.

The present invention is an asset management method that is performed by being processed by a computer program. It is necessary to visualize and output sewage assets as efficiently as possible when outputting through a computer screen or a printer. When outputting all sewage assets uniformly, It is possible to provide a layered output environment as in the illustrated embodiment so that the user can cook the output target asset according to the purpose of utilization. As shown in FIG. 5, It can be confirmed that the connection position and the connection state between the respective pipes are clearly output according to the selection of the pipes only,

The asset DB module installed in the computer for carrying out the present invention together with the GIS module is a database containing the connection information, the specification information and the history information of the sewerage property together with the risk to be described later, Is similarly applied to the construction of the asset DB module, and a database having the structure shown in Fig. 6 is constructed.

That is, as shown in FIG. 6, the asset DB module of the present invention includes identification information, specification information, and history information of the sewerage asset. Here, the identification information of the sewerage asset is used to distinguish the asset from other assets The identification information includes zone information for identifying the drainage zone and drainage zone to which the asset belongs, and the above-mentioned identification code for each sewerage asset. These zone information, the identification code and the serial number Etc. are combined to constitute the entire identification information.

Therefore, the affiliation and type of the corresponding asset can be easily grasped only by the identification information of each asset on the output screen of the asset DB module as shown in FIG. 6. As shown in the figure, the asset information included in the asset DB module is output When a specific asset is selected on the map by using a computer pointing device, asset information of the asset is highlighted and displayed on the output screen of the asset DB module.

As shown in FIG. 6, in the asset DB module, the specification information and the history information are recorded together with the identification information. The specification information includes specifications such as the capacity, specification and material of the asset, Including the time of initial construction or the time of counting.

That is, as shown in Fig. 6, in the case of the branch pipe to which BP is assigned as the identification code, the specification information may include the pipe type, the extension (L), the pipe diameter or the radius of the same radius (D) The first year of burial or the year of rehabilitation of the plant can be applied as history information.

In particular, in the case of sewerage facilities, pipes of various materials and specifications can be applied to pipes in comparison with other piping facilities. In the present invention, as shown in FIG. 6, a pipe code is assigned to pipe- The species code is shown in Table 1 below.

division A species Tuber Code circa
castle Centrifugal Reinforced Concrete Pipe CRCP Prestressed Concrete Pipe PCP Vibrated and Rolled Reinforced Concrete Pipe VRRCP Conduit (Earthware Pipe) EP year
castle Rigid PolyVinyl Chloride Pipe RPVCP Fiberglass Reinforced Plastic Composite Pipe FRPCP Polyethylene pipe (PolyEthylene Pipe) PEP gold
genus Ductile Cast Iron Pipe DCIP Corrugated Steel Pipe CSP

The canonical code of the present invention as described above is not limited only to the specification information management of the conduit, but is used in the selection of the failure probability determination curve of the corresponding conduit asset in the failure probability setting step (S22) to be described later.

FIG. 7 shows a situation in which a specific region is selected and enlarged in a drainage bins screen in a state in which a hierarchy of tubular tops such as a manhole MH and an excellent tillroom OC are selected together. 8, and it is possible to more specifically confirm the connection state between the sub-items through the enlargement of the screen.

As described above, after the location information extracting step S11 is performed, a virtual asset creation step S12 in which a virtual asset is assigned according to the connection state between assets based on the extracted location information, (Step S13). In step S11, if the spatial information to be processed such as drawing and screen output in the position information extracting step S11 is position information extractable from a normal GIS, that is, coordinates on the topographic map , The spatial information generated and recorded in the subsequent virtual asset creation step (S12) to the asset information update step (S13) is connection information enabling identification of the connection structure of each individual asset. In general GIS, In the present invention, the connection relation is estimated based on the coordinates of each element, while in the present invention, There is an advantage.

The location information of the sewage asset extracted from the GIS module in the location information extracting step (S11) may be a coordinate on the spatial position of the sewage facility, that is, on the topographical map as in a common public GIS, The location of individual assets can be easily grasped and the visual output can be achieved. However, in the case of a vessel that occupies a large part of the sewerage asset, in particular, a plurality of unit bodies are connected by a dendritic or a network, In the case of detailed conduits, there is a limitation in the process of selecting a specific point or pipe body by the simple coordinates type location information and collectively grasping the upstream connected assets of the pipe body.

In the conventional GIS, assuming a processing situation of collecting the whole pipe conduit connected to the upstream side of the pipe-specific pipe, first, the starting point coordinates of the selected pipe body are extracted, and based on the coordinates, It is necessary to repeatedly perform the process of collecting the end point coordinates and establishing the connection relation by collating the collected coordinate groups with respect to all of the connection points. This causes a great amount of computer resources to be consumed and the processing time is also long Bar, there is a problem that practical application is practically impossible.

Thus, in the present invention, the connection relation of the sewerage system such as the sewerage system is implemented not by the coordinate-based location information of the asset but by introducing the virtual asset that defines the actual connection state between assets, And it is possible to analyze the relationship between the accurate assets.

FIG. 9 shows a network diagram in which such a virtual asset is applied to an actual conduit. In the illustrated embodiment, a virtual manhole to which a VM is assigned as an identification code is applied as a virtual asset As shown in Fig. 8 showing the same region as the figure, it is assumed that a virtual manhole VM is installed in a dendritic joint portion of the branch pipe (BP) although the actual manhole is not installed. .

In addition to the virtual manhole, the virtual asset may be applied to the virtual asset. However, since the manhole is generally installed in the main connection portion between the pipes in a normal sewerage facility, the actual connection structure, It is preferable to apply a virtual manhole as a virtual asset.

The virtual asset, that is, the virtual manhole in the present invention is not a means for constructing the actual manhole but is a means for identifying the state of connection between the respective assets. It is not necessary to give practical specifications and location, It functions only as a means to mediate interconnected assets in the process.

However, as shown in FIG. 10 showing the output state of the asset DB module to which the virtual asset is applied, the virtual asset is regarded as one asset and processed. Therefore, unique identification information of the same type as other real assets is given to each virtual asset As shown in the figure, an identification code indicating that the asset is a virtual asset is applied to the identification information of the virtual asset, and the serial number of the real asset to which the corresponding asset belongs is the same , It is possible to clearly distinguish belonging assets of virtual assets.

In addition, a virtual asset is a means for mediating an upstream real asset connected to a corresponding virtual asset. Even if a plurality of virtual assets are constituted in one channel, a separate serial number is assigned to each virtual asset There is no need to give it.

As shown in FIG. 10, when the asset DB module is constructed, the actual assets, that is, the identification information of the virtual assets connected to the corresponding assets And the identification information of the real assets connected to the asset information of the virtual asset is recorded, so that the connection structure of the entire assets can be systematically recorded. In addition, when the coordinate information of the nearby assets is excluded In addition to analyzing the connection status between each asset without searching for, collecting, and collating the location information, the virtual asset is registered as an asset and used for link state analysis, thereby recording the actual asset built in the asset DB module Since processing can be performed without encroaching or deforming the area, the computation processing time can be drastically shortened compared to the coordinate-based processing, The efficient use of resources and it is possible to prevent a processing delay, and error resulting from any encroachment to deformation of the asset-specific recording area.

The virtual asset creation step S12 is a virtual asset creation step S12 in which a virtual asset such as a virtual manhole VM is assigned according to the connection state between assets based on the location information extracted from the GIS module in the location information fetching step S11, By performing the asset information update step (S13), which is added to the asset DB module as an asset and the asset information is updated, it is possible to quickly and accurately grasp the entire subsequent assets connected to the specific asset in the asset DB module.

Therefore, if a specific asset in the asset DB module is selected, the asset information of the connected asset connected with the asset can be quickly extracted by the processing module, thereby quickly and accurately analyzing the size of the upstream-side connected asset of the specific asset , The size of the upstream assets of the specific asset is used to calculate the damage caused by the destruction of the asset. This is because the updated asset information is withdrawn from the asset DB module and the consolidated assets of the assets are collected, The damage to which the damage degree is set may be performed through the setting step S21.

That is, when a specific conduit is selected from a plurality of unit conduits constituting the sewerage network, the asset information of the upstream conduit connected to the conduit can be quickly extracted, and the conduits included in the specification information And the total extension of the conduit where the function is suspended due to the destruction of the conduit.

The damage level setting step S21 is a preliminary action for performing a risk calculating step S30 to be described later. Also, after the history information for each asset is fetched as a preliminary action preceding the risk calculating step S30, And a failure probability setting step (S22) in which a failure probability is set by being substituted into a crystal curve.

The probability of failure is the probability that an asset will be destroyed at this time, as in its preliminary sense. The probability of failure is a combination of various factors such as duration of use versus normal life of the asset, excess frequency of rated capacity, However, since it is difficult to grasp only the information contained in the asset DB module, the failure factor is set as a main factor.

The destruction probability set on the basis of the use period may be given in the form of a rank as shown in the left end portion of FIG. 11 depending on the availability of the asset, and the damage degree and the destruction probability described above are combined The risks are calculated and the risk per asset can be determined through the risk estimation step (S30) in which the calculated risk for each asset is recorded in the asset DB module.

That is, the risk for each asset calculated in the risk estimation step (S30) is set to be low in the case of a low probability of destruction and low in damage, and high in case of high probability of damage and high damage, By confirming the risk, it is possible to know precisely whether the destruction of the property is imminent and the severity of the damage caused by the destruction of the asset. Based on this, preemptive measures such as input of funds are taken.

The failure probability determined based on the use period may be determined by applying a simple linear relationship to the use period and the failure probability. However, in the present invention, the failure probability determination curve having a nonlinearity as shown in FIGS. 12 and 13 is applied Determine the probability of failure.

When the linear relationship is applied to the duration of use and the probability of failure, the probability of failure increases in proportion to the period of use. For example, the available life of a Centrifugal Reinforced Concrete Pipe, which is called a hume pipe, When the failure probability of seven steps as shown in FIG. 11 is applied, the failure probability step increases at a period of about 2.86 years after the initial installation.

However, in the case of rigid tubular bodies such as centrifugal reinforced concrete pipes, defects equivalent to destruction or destruction of assets requiring measures such as an unexpected settlement of the tubular foundation, an excessive initial overburden load, After a certain period of time after the burying, it collapses into the ballast and breaks down and destroys the phenomenon. After the ballast is completed, when the ballast enters the old age, the deterioration of materials such as corrosion, Is generally observed to rise rapidly.

Therefore, when a simple linear proportionality is applied between the use period and the failure probability as described above, the failure probability at the initial stage of installation and the end of the available soft period is underestimated, and the failure probability at the mid- There is nothing.

Accordingly, in the present invention, when the failure probability setting step S22 is performed, the above-described empirical aging change pattern is applied to determine the failure probability having a peak factor, a base value, The probability of failure at the present analysis time can be determined accurately by applying a curve and substituting the period of use extracted from the historical information of each asset into the probability of failure determination curve.

As shown in FIG. 12, through the failure probability determination curve of the present invention, when the initial failure probability increases, the failure probability decreases when the stabilizer enters the stabilizer, and the failure probability increases when the stabilizer ends. have.

The characteristic factors of the failure probability determination curve of the present invention include peak value, base value, duration, start time of a stable period as shown in FIG. 12, And the end point of time. By setting these characteristic factors, the shape of the fracture probability determination curve can be modified, and as shown in FIG. 13, different destructively adjusted destructive properties Probability determination curves can be applied.

As shown in Table 1, the pipe body applicable to the sewerage can be classified into a hard pipe such as a centrifugal reinforced concrete pipe (CRCP) and a soft pipe such as a polyethylene pipe (PEP) These hard and ductile conduits have a significant difference not only in initial behavior after burial but also in deterioration pattern such as corrosion rate.

That is, as shown in FIG. 13, the centrifugal force reinforced concrete pipe which is mainly used for large-scale conduits as well as the hard material such as mortar in the joint between the pipes is relatively high in the initial failure probability, It has a characteristic to maintain a low level of basal value when entering, and it is applied not only to small conduits but also to polyethylene pipes where soft materials such as couplings of the same material are used for joints between pipes. The peak value is relatively low, A relatively moderate increase in the amount of water is available over the entire life span.

Accordingly, by applying different characteristic factors to the fracture probability determination curves, it is possible to accurately calculate the fracture probability adjusted for each pipe type by reflecting the actual phenomena. By combining the above-described damage and fracture probability as shown in FIG. 11 The risk by asset is calculated. In the illustrated embodiment, the risk is classified into four levels of L (low risk), M (intermediate risk), S (sufficient risk) and H (high risk).

FIGS. 14 and 15 illustrate a state in which the risk level calculated by the asset and output in the asset DB module is outputted. The risk of the assets constituting the sewage facility is displayed on the computer screen. FIG. FIG. 15 shows a situation in which the assets corresponding to the selected risk are highlighted on the network as the risk level display layer is selected. FIG. Respectively.

As described above, the risk of each asset constituting the sewage facility can be calculated rationally and systematically through a series of sewer asset information processing steps from the position information extracting step (S11) to the risk calculating step (S30) The priority of the action can be set and efficient allocation of resources can be achieved.

S11: Location information extraction step
S12: Virtual asset creation step
S13: Asset information update step
S21: Damage setting step
S22: Failure probability setting step
S30: Risk assessment step

Claims (1)

In the sewer asset management method in which the spatial information, the property information, and the history information of the assets constituting the sewage facility are collected and stored as asset information in a database built in a computer, and the asset information stored in the database is processed by a computer- ,
The program installed in the computer is composed of an asset DB module that contains asset information of the sewage facility, a GIS module that contains location information by asset, and a processing module that processes and generates asset information in connection with the asset DB module and GIS module Being;
A location information fetching step (S11) in which the program is executed and the location information of the sewerage asset is fetched from the GIS module by the processing module;
A virtual asset creation step (S12) of assigning a virtual asset according to the connection state between assets by the processing module based on the extracted location information;
An asset information updating step (S13) of updating the asset information by adding the virtual asset as an asset to the asset DB module by the processing module;
A damage setting step (S21) in which damage information is set according to the size of the consolidated assets of the asset DB module, the asset information updated by the asset DB module is retrieved by the processing module,
A failure probability setting step (S22) in which a failure probability is set by assigning history information for each asset to a failure probability determination curve having a peak factor, a base value, an availability factor, and a stabilizer characteristic factor by the processing module;
(S30) in which the risk level is calculated by combining the damage degree and the failure probability according to the asset by the processing module and the risk level of the calculated asset is recorded in the asset DB module,
Wherein the virtual asset includes a virtual conduit or a virtual manhole that is identified according to a connection relationship of the asset,
The location information of the asset is a topographic map,
When outputting the asset in a map format, the location information and the asset are layered and processed, and a layered output environment is provided to select an output target asset
The assets are each assigned a preference code and an identification code so that they can be easily identified,
The conduit of the sewage system is assigned a code of a kind according to the material and the standard of the standard, and the conduit is distinguished as a hard conduit and a soft conduit
The probability of failure is classified according to the availability of the asset,
It is possible to identify the time of imminent destruction of the asset and the severity of the damage caused by the destruction of the property,
When a specific conduit is selected, the asset information of the asset containing the risk is highlighted to set the priority of the preemptive action,
The failure probability determination curve is adjusted differently depending on the characteristics of the sewerage asset,
The peak value of the hard conduit is relatively higher than that of the soft conduit at the initial stage of the burial of the hard conduit, but maintains a low level of the basal value when entering the ballast, and the soft conduit is continuously increased
Wherein the asset DB module updates asset information in response to a request from the processing module,
Wherein the GIS module provides location information for each asset to the processing module to generate connection information among the asset information included in the asset DB module,
The GIS module has the same data format and system protocol as the public GIS,
The scale of the connected assets in the damage setting step S21 is a total extension of the conduits in which the functions are suspended due to the destruction of the conduits by accumulating extensions of the conduits included in the specification information,
The failure probability setting step (S22) is characterized by applying different characteristic factors according to the pipe type according to the hard conduit and the soft conduit
Failure Probability Adjustment Type JIAEES Connected Sewer Asset Management Method.

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