CN117634891A - Automatic evaluation method and system for invasion risk of external water of drainage pipe network - Google Patents
Automatic evaluation method and system for invasion risk of external water of drainage pipe network Download PDFInfo
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Abstract
The invention provides a method and a system for automatically evaluating invasion risk of water coming from a drainage pipe network, wherein the method comprises the following steps: collecting data of water supply and drainage pipe network flow monitoring equipment of a research area and topological structure information of the area pipe network in real time, and dividing the whole water drainage area into different subareas according to a plurality of key node flow meters distributed in the water drainage pipe network; constructing a GIS geographic information system according to the flow monitoring data of the water supply and drainage pipe network of the research area and the pipe network topological structure; based on the combination of Python and GIS, the automatic evaluation of the invasion risk of the water coming from the drainage pipe network in the research area is realized; and outputting the foreign water invasion risk assessment results of all subareas of the research area. The method solves the technical problems of high external water risk assessment cost, large workload, low automation and interaction degree and complex assessment operation caused by the defect of the data island.
Description
Technical Field
The invention relates to the field of water detection data processing, in particular to an automatic evaluation method and an automatic evaluation system for invasion risk of incoming water outside a drainage pipe network.
Background
The sewage system is one of the most important components of the urban life line, is used for centralized collection, transportation, treatment and discharge of sewage, plays a key role in maintaining urban safety, ecological environment and life health, and is an important component in urban infrastructure.
In recent decades, as town scales are continuously enlarged, facilities are continuously perfected, and sewage systems are rapidly developed. Despite the tremendous advances in overall sewage system size and collection capacity, municipal sewage systems still have problems in terms of daily operation and management, such as: the sewage pipe network operates at a high water level and a low flow rate, and the sewage pipe network overflows in rainy days, so that the sewage plant has low water inlet concentration, high water load and the like. For this reason, excessive invasion of foreign water by infiltration of groundwater and inflow of surface water is critical.
Foreign water generally refers to an undesirable, low-pollution amount of water that enters the sewer system. When the invasion amount of the external water exceeds the reserved capacity in the design of the sewage pipeline, the performance of the pipeline and even the whole sewage system can be obviously affected, and the threat to the urban ecological environment and the life production safety is caused, and the method is particularly shown: the method has the advantages of reducing the operation treatment efficiency of the pump in the factory, increasing the operation cost, reducing the overflow efficiency of the pipe network, increasing the overflow risk, damaging the pipeline structure, causing the collapse of the road surface and the like.
According to the practical research at home and abroad, the cost and the period for reducing the invasion of foreign water are high. The current foreign water assessment work is mostly disposable engineering, and the normalized long-term risk assessment capability is lacking. The prior invention patent application document with publication number of CN113392462A, namely a rapid modeling method for a sewage pipe network based on Revit secondary development, comprises the following steps: establishing a sewage pipe network component library; establishing a sewage pipe network database; developing a sewage pipe network modeling operation interface in Revit; and interacting the Revit with the database through an operation interface. And the prior invention patent application document with publication number of CN112093828A, namely a cloud computing-based distributed sewage treatment intelligent platform, comprehensively monitors and collects various elements of a sewage treatment facility, and stores, analyzes and feedback-controls the elements in real time. The platform comprises a data monitoring module, a data transmission module, a data storage module, a facility control module, an intelligent analysis engine and a visualization module; through the platform, unified monitoring, data acquisition and transmission, unified data analysis, processing application and control of a large number of scattered sewage treatment facilities are realized, and intelligent abnormal recognition control and visual management of the scattered sewage treatment facilities are realized on the basis. At present, various external water quantitative assessment methods based on the water quantity and water quality indexes of a monitoring pipeline are developed, but the problems of high cost, complex operation, or pipe network data loss and the like of monitoring equipment generally exist when risk assessment is carried out, meanwhile, a drainage pipeline information management platform based on GIS and a pipe network real-time running state platform based on-line monitoring equipment are often separated into data platforms which are not communicated with each other, so that a large amount of data with use potential are formed into a plurality of data islands, the pipe network external water assessment is limited more and is mostly one-time assessment work, and the automatic assessment of the invasion risk of the external water cannot be realized in a low-cost and normalized mode.
In summary, the defects of the data island in the prior art cause the problems of higher external water risk assessment cost, large workload, low automation and interaction degree and complex assessment operation.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: how to solve the technical problems of high external water risk assessment cost, large workload, low automation and interaction degree and complex assessment operation caused by the defect of data island in the prior art.
The invention adopts the following technical scheme to solve the technical problems: the automatic evaluation method for the invasion risk of the water coming from the outside of the drainage pipe network comprises the following steps:
s1, collecting data of a water supply and drainage pipe network flow monitoring device of a preset water drainage sheet area and topological structure information of the sheet area pipe network in real time, and arranging key node flow meters in the water drainage pipe network to divide the preset water drainage sheet area into at least 2 sub-areas;
s2, building a GIS geographic information system according to the data of the flow monitoring equipment of the water supply and drainage pipe network of the preset water drainage sheet area and the topological structure information of the pipe network of the sheet area;
s3, combining and utilizing a Python tool and a GIS geographic information system, and evaluating a subarea of the sheet area by utilizing preset logic to obtain drain pipe network outside water invasion risk information of a preset drain sheet area;
s4, outputting the external water invasion risk assessment result of each zone subarea according to the external water invasion risk information of the drainage pipe network.
Compared with the existing drainage pipe network outside water invasion risk assessment technology, the method combines GIS and Python, develops a GUI visualization program for assessing outside water invasion risk, and achieves automatic, real-time and dynamic assessment and result visualization of drainage pipe network outside water invasion risk assessment. The intelligent water service network external water intrusion risk assessment method has the characteristics of low cost, automatic assessment and the like, can realize long-time stable real-time online assessment, reduces the cost, improves the accuracy and reliability of the external water intrusion risk assessment of the drain pipe network, and provides a reference for intelligent construction of the external water intrusion assessment of the intelligent water service network.
In a more specific technical solution, in step S1, the data of the flow monitoring device of the water supply and drainage pipe network includes: the method comprises the steps of sewage plant water inlet flow meter data, sewage lifting pump station flow meter data, key node online flow meter data in a pipe network and water supply network water user flow meter data.
In a more specific technical scheme, in step S1, platform data is obtained by using a GIS drainage pipeline information management platform and a pipe network real-time operation state platform, and data of water supply and drainage pipe network flow monitoring equipment and topological structure information of a district pipe network are obtained according to the platform data.
The method realizes the external water invasion risk assessment based on the water yield method, fully utilizes a large amount of data with potential in the data platforms which are not communicated with each other, breaks through the data islands of different platforms, realizes the whole flow data integration assessment of urban external water assessment, realizes the real-time external water risk assessment of the integration of the water supply and drainage system, and has the advantages of high efficiency and real-time performance.
In a more specific technical solution, in step S2, the GIS geographic information system includes: the network topology structure layer and the element class layer are used for the network topology structure layer.
In a more specific technical scheme, in step S3, a preset algorithm is run by using a Python tool to visualize the evaluation progress of the intrusion risk information of the external water of the drainage pipe network in the GIS geographic information system.
According to the invention, the automatic evaluation of the invasion risk of the water outside the drainage pipe network of the research area is realized based on the combination of Python and GIS, mainly based on the programming language of the Python computer, a series of algorithms are operated to visualize the automatic evaluation progress of the invasion risk of the water outside the drainage pipe network in the GIS, and the interactive degree of an evaluation system is improved.
The invention is not like the one-time evaluation work of the foreign water invasion risk evaluation in the prior art, even if the pipe network structure is changed, the code is not required to be rewritten, only the value needing to be deleted is edited under the condition that the built attribute table field structure is not changed, the attribute table structure still meets the code operation requirement, and the invention has the advantages of universality and normalization.
In a more specific technical solution, step S3 includes:
s31, configuring a program running environment, importing layer data of a GIS geographic information system, and carrying out external water invasion risk assessment initialization on a drainage pipe network;
s32, obtaining a geographic relation between water supply and drainage systems according to the layer data, and accordingly carrying out geographic corresponding operation on the water supply and drainage nodes by calling a neighbor analysis Near tool of the Arcpy module;
s33, calling SearchCursor, updateCursor functions, traversing the water consumption and transfer coefficient field values of a water user layer in the GIS to obtain the drainage of the water user;
s34, according to a sewage node flow calculation algorithm and drainage of a drainage user, solving the drainage needed by the sewage inspection well node;
s35, obtaining the water drainage amount to be discharged according to the upstream and downstream nodes of the subarea of the area, and solving the water drainage amount to be discharged and the actual water drainage amount of the subarea of the area by combining the actual water drainage amount measured by the upstream and downstream flow meters, so as to obtain the external water amount and the external water ratio of the area by processing;
s36, according to the external water proportion, processing to obtain external water proportion level, and processing to obtain hierarchical visual evaluation data according to the sub-region elements of the sub-region of the region.
According to the invention, the risk assessment of the pipe network external water invasion is not carried out by adopting manual diagnosis, but the automatic risk assessment of the external water invasion is realized by compiling a visual computer program in a computer programming language, so that the time cost of the risk assessment of the external water invasion is greatly saved, and the method has the advantages of low cost, automation and visualization.
The invention can determine the priority of daily maintenance of the drainage pipe network according to the invasion risk levels of the external water in different subregions of the pipe network, can effectively reduce the workload of pipeline maintenance, reduces the input cost, is beneficial to promoting the quality improvement and efficiency enhancement working process of sewage treatment in various places and helps to quickly improve the quality of urban water environment.
In a more specific technical solution, step S34 further includes:
s341, establishing an uncomputed node library and a calculated node library according to the GIS geographic information system;
s342, traversing and judging whether adjacent upstream nodes of each water supply and drainage node are in a calculated node library in the GIS geographic information system:
s343, if yes, calculating the flow of the current water supply and drainage node according to a formula, and adding the flow into a calculated node library;
s344, if not, adding the current water supply and drainage nodes into an uncomputed node library, and continuously traversing the judging operation until all the water supply and drainage nodes are added into the calculated node library;
s345, outputting the total flow of the water supply and drainage nodes, and corresponding to a preset storage flow field in the sewage inspection well.
In a more specific technical solution, in step S4, the foreign water invasion risk assessment result includes: extraneous water amount information, extraneous water duty data, extraneous water intrusion risk level, and extraneous water intrusion risk level profile.
In a more specific technical scheme, in step S4, the process initializes the key field value of the GIS layer attribute table in the GIS geographic information system.
In a more specific technical scheme, the automatic assessment system for the invasion risk of the water outside the drain pipe network comprises:
the data acquisition and slice division module is used for collecting the flow monitoring equipment data of the water supply and drainage pipe network of the preset water drainage slice area and the topology structure information of the slice area pipe network in real time, and key node flow meters are arranged in the water drainage pipe network to divide the preset water drainage slice area into at least 2 slice area sub-areas;
the geographical information system building module is used for building a GIS geographical information system according to the data of the water supply and drainage pipe network flow monitoring equipment of the preset water drainage sheet area and the topological structure information of the sheet area pipe network, and is connected with the data acquisition and sheet area dividing module;
the foreign water invasion information evaluation module is used for obtaining the foreign water invasion risk information of the drain pipe network of the preset drain water zone by utilizing the preset logic evaluation in combination with the Python tool and the GIS geographic information system, and is connected with the geographic information system building module and the data acquisition and zone division module;
the evaluation result output module is used for outputting the external water invasion risk evaluation result of each zone subarea according to the external water invasion risk information of the drainage pipe network, and is connected with the external water invasion information evaluation module.
Compared with the prior art, the invention has the following advantages:
compared with the existing drainage pipe network outside water invasion risk assessment technology, the method combines GIS and Python, develops a GUI visualization program for assessing outside water invasion risk, and achieves automatic, real-time and dynamic assessment and result visualization of drainage pipe network outside water invasion risk assessment. The intelligent water service network external water intrusion risk assessment method has the characteristics of low cost, automatic assessment and the like, can realize long-time stable real-time online assessment, reduces the cost, improves the accuracy and reliability of the external water intrusion risk assessment of the drain pipe network, and provides a reference for intelligent construction of the external water intrusion assessment of the intelligent water service network.
The method realizes the external water invasion risk assessment based on the water yield method, fully utilizes a large amount of data with potential in the data platforms which are not communicated with each other, breaks through the data islands of different platforms, realizes the whole flow data integration assessment of urban external water assessment, realizes the real-time external water risk assessment of the integration of the water supply and drainage system, and has the advantages of high efficiency and real-time performance.
According to the invention, the automatic evaluation of the invasion risk of the water outside the drainage pipe network of the research area is realized based on the combination of Python and GIS, mainly based on the programming language of the Python computer, a series of algorithms are operated to visualize the automatic evaluation progress of the invasion risk of the water outside the drainage pipe network in the GIS, and the interactive degree of an evaluation system is improved.
The invention is not like the one-time evaluation work of the foreign water invasion risk evaluation in the prior art, even if the pipe network structure is changed, the code is not required to be rewritten, only the value needing to be deleted is edited under the condition that the built attribute table field structure is not changed, the attribute table structure still meets the code operation requirement, and the invention has the advantages of universality and normalization.
According to the invention, the risk assessment of the pipe network external water invasion is not carried out by adopting manual diagnosis, but the automatic risk assessment of the external water invasion is realized by compiling a visual computer program in a computer programming language, so that the time cost of the risk assessment of the external water invasion is greatly saved, and the method has the advantages of low cost, automation and visualization.
The invention can determine the priority of daily maintenance of the drainage pipe network according to the pipe network topological structure and the external water invasion risk levels of different subareas divided by the distribution density of the flow meters, can effectively reduce the workload of pipeline maintenance, reduces the input cost, is beneficial to promoting the working process of quality improvement and efficiency improvement of sewage treatment in various places and helps to quickly improve the quality of urban water environment.
The invention solves the technical problems of high external water risk assessment cost, large workload, low automation and interaction degree and complex assessment operation caused by the defect of data island in the prior art.
Drawings
FIG. 1 is a schematic diagram showing basic steps of an automatic evaluation method for risk of intrusion of incoming water into a drainage pipe network according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram showing specific steps of automated evaluation of risk of intrusion of water into the outside of a drainage network according to embodiment 1 of the present invention;
fig. 3 is a schematic diagram of specific implementation steps of the sewage node flow calculation algorithm in embodiment 1 of the present invention;
FIG. 4 is a schematic diagram illustrating steps of an automatic evaluation method for risk of intrusion of incoming water into a drainage pipe network according to embodiment 2 of the present invention;
fig. 5 is a schematic diagram of a GIS geographic information system constructed in embodiment 2 of the present invention;
FIG. 6 is a schematic diagram of a program interface for implementing step S3' in embodiment 2 of the present invention;
FIG. 7 is a flowchart of the algorithm in step S3' of embodiment 2 of the present invention;
FIG. 8 is a graph showing the distribution of foreign water intrusion level according to the risk assessment result of foreign water intrusion in embodiment 2 of the present invention;
fig. 9 is a schematic diagram showing the distribution of foreign water intrusion level according to the risk evaluation result of foreign water intrusion in embodiment 2 of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, the automatic assessment method for the invasion risk of the water outside the drain pipe network provided by the invention comprises the following basic steps:
s1, collecting data of water supply and drainage pipe network flow monitoring equipment of a researched area and topological structure information of the area pipe network in real time, and dividing the whole water drainage area into different subareas according to a plurality of key node flow meters distributed in the water drainage pipe network;
in this embodiment, the water supply and drainage network flow monitoring device data includes, but is not limited to: the method comprises the steps of feeding water flow meter data of a sewage plant, flow meter data of a sewage lifting pump station, on-line flow meter data of key nodes in a pipe network and water flow meter data of a water supply network for water users;
in the embodiment, the data of the flow monitoring equipment of the water supply and drainage pipe network and the data of the real-time running state platform of the pipe network based on the on-line monitoring equipment are obtained from a drainage pipe line information management platform based on GIS of a research area by the topological structure information of the pipe network of the slice area;
in the embodiment, the division degree of different subareas depends on the sewage pipe network topological structure and the flow meter distribution density;
s2, constructing a GIS geographic information system according to the flow monitoring data of the water supply and drainage pipe network of the research area and the pipe network topological structure;
in this embodiment, the GIS geographic information system should include, but is not limited to: drainage households, node flow meters, pipelines, pump stations, sewage inspection wells and drainage subareas; in this embodiment, the data information stored in the attribute table in each layer includes, but is not limited to: the drainage pipe network topological structure and the flow monitoring equipment data are reserved at the same time for the following step S3 to automatically evaluate the invasion risk of the external water of the drainage pipe network;
in this embodiment, the layer data of each element class in the GIS geographic information system includes, but is not limited to: flow monitoring equipment data in a pipe network, topology structure data of the pipe network and geographic coordinate data;
s3, automatically evaluating the invasion risk of the outside water of the drainage pipe network of the research area based on the combination of Python and GIS;
in the embodiment, the automatic evaluation of the invasion risk of the external water of the drainage pipe network of the research area is realized based on the combination of Python and GIS, mainly based on the visualization of the automatic evaluation progress of the invasion risk of the external water of the drainage pipe network in the GIS by writing a computer program in a Python computer programming language;
as shown in fig. 2, in the embodiment, step S3 of automated evaluation of risk of intrusion of water coming from outside the drainage network further includes the following specific steps:
s31, configuring a program running environment, importing data of each layer of the GIS constructed in the step S2, and carrying out external water invasion risk assessment initialization on the drainage pipe network;
s32, according to the geographic relation between the water supply and drainage systems, realizing geographic correspondence of the water supply and drainage nodes by calling a neighbor analysis Near tool of the Arcpy module;
s33, transferring SearchCursor, updateCursor functions to traverse the water consumption and transfer coefficient field values of the water user layer to calculate the drainage of the water user;
s34, calculating the water displacement of the sewage inspection well node according to a sewage node flow calculation algorithm;
as shown in fig. 3, in this embodiment, the specific implementation steps of the sewage node flow calculation algorithm further include:
s341, establishing two node libraries of an uncomputed node and a calculated node;
in this embodiment, the calculated node library represents that the flow of the node in the library has been calculated, and the uncomputed node library represents that the flow of the node in the library has not been calculated;
s342, identifying whether adjacent upstream nodes of each node are in the calculated library through traversal:
s343, if so, calculating the node flow according to a formula, and adding the node flow into a calculated library;
s344, if not, adding the node into the calculated library for the next cycle until all the nodes are added into the calculated library;
s345, outputting the total flow of all the nodes, and corresponding to the total flow in a field of the storage flow in the sewage inspection well;
s35, calculating the regional sewage drainage quantity and the actual sewage quantity according to the regional upstream and downstream node sewage drainage quantity and the actual sewage quantity measured by an upstream and downstream flowmeter, so as to calculate the regional external water quantity and the external water ratio;
s36, carrying out hierarchical visual evaluation display on the sub-area elements according to the proportion level of the external water.
S4, outputting foreign water invasion risk assessment results of all subareas of the research area;
in the present embodiment, the foreign water intrusion risk assessment results include, but are not limited to: extraneous water volume, extraneous water duty ratio, extraneous water intrusion risk level, and extraneous water intrusion risk level profile;
in the embodiment, the initialization of the risk evaluation of the intrusion of the water outside the drainage pipe network is to initialize key field values of a GIS layer attribute table used for evaluation;
in this embodiment, the sewage node flow calculation algorithm establishes two node libraries of the uncomputed node and the calculated node, where the calculated node library represents that the flow of the node in the library has been calculated, and the uncomputed node library represents that the flow of the node in the library has not been calculated. Identifying by traversal whether each node's neighboring upstream nodes are in the computed library: if so, calculating the node flow according to a formula, and adding the node flow into a calculated library; if not, adding the node into the uncomputed library for the next cycle until all the nodes are added into the calculated library, and outputting the total flow of all the nodes at the moment, wherein the total flow corresponds to a field of the storage flow in the sewage inspection well;
in this embodiment, the foreign water invasion risk levels are classified into several levels according to a certain rule based on the size of the foreign water ratio.
Example 2
In the embodiment, based on the basic principle of the water yield method, the real-time running state platform data of the drainage pipeline information management platform based on the GIS and the pipe network based on the on-line monitoring equipment which are not communicated with each other are effectively utilized, and the automatic assessment process of the invasion risk of the foreign water in the W city east zone is realized through a written computer program algorithm.
As shown in fig. 4, the automatic evaluation method for the invasion risk of the water coming from the drainage pipe network further comprises the following specific implementation steps:
s1', collecting data of flow monitoring equipment of a water supply and drainage pipe network of a researched area and topological structure information of the pipe network of the area in real time, and dividing the whole water drainage area into different subareas according to a plurality of key node flow meters distributed in the water drainage pipe network;
in the embodiment, the data of the flow monitoring equipment of the water supply and drainage pipe network and the topological structure information of the district pipe network are derived from the data of the water supply and drainage pipe line information management platform of the W city and the real-time operating state platform of the pipe network based on the on-line monitoring equipment; based on flowmeter layout and pipe network topology structure information, the embodiment divides a research area into four sub-areas: WL02-W2 patch, W1-W3-WL02-WL03 patch, WL03-WL09 patch, WL09-W4 patch.
S2', constructing a GIS geographic information system according to the flow monitoring data of the water supply and drainage pipe network of the research area and the pipe network topological structure;
as shown in fig. 5, in this embodiment, a GIS geographic information system schematic diagram of a GIS geographic information system is constructed according to the flow monitoring data of the water supply and drainage pipe network of the research patch and the pipe network topology; referring to fig. 5, in the GIS geographic information system built in this embodiment, a water Point map layer named as point_user, a sewage node map layer named as Manhole, a flowmeter map layer named as Meter, a Pipe map layer named as Pipe and a catchment area map layer named as sub are built on a GIS map layer according to the actual Pipe network topology structure information data and flow data of the east city region of W city, and corresponding attribute table fields and data are filled.
S3', automatically evaluating the invasion risk of the outside water of the drainage pipe network of the research area based on the combination of Python and GIS;
as shown in fig. 6, in this embodiment, a computer program interface for performing automatic evaluation progress visualization of the invasion risk of the external water of the drainage pipe network is shown in fig. 6, in this embodiment, the automatic evaluation of the invasion risk of the external water of the drainage pipe network is performed by writing a computer program based on Python computer programming language, and running a series of algorithms in GIS to perform visual display of the automatic evaluation progress of the invasion risk of the external water of the drainage pipe network;
as shown in fig. 7, in this embodiment, the step S3' of automatically evaluating the risk of intrusion of the water coming from outside the drainage network further includes the following specific steps:
s31', configuring a program running environment, importing the data of each layer of the GIS constructed in the step S2, and carrying out the risk assessment initialization of the intrusion of the external water of the drainage pipe network;
s32', according to the geographic relation between the water supply and drainage systems, realizing geographic correspondence of the water supply and drainage nodes by calling a neighbor analysis Near tool of the Arcpy module;
s33', calling SearchCursor, updateCursor function to traverse water consumption of the user layer Point_user and Transfer coefficient Transfer field value to calculate drainage displacement Discharge of the user;
s34', calculating the water displacement of the sewage inspection well node according to a sewage node flow calculation algorithm;
as shown in fig. 8, in this embodiment, the specific implementation step of the sewage node flow calculation algorithm further includes;
s341', inputting all sewage nodes;
s342', adding all nodes into an uncomputed library;
s343', judging whether an upstream node exists;
s344', if yes, determining as a transmission node;
s345', judging whether all the adjacent upstream nodes of the transmission node are in the calculated node library, if not, jumping to a careful step S342';
s346', if yes, Q transfer = Q local inflow+q upstream transfer;
s347', if no upstream node exists, judging the current node as the uppermost node;
s348', qmost upstream = qlocal inflow;
s349', adding the node to compute a library;
s3410', outputs the flow of all the sewage nodes.
S35', according to the water discharge amount of the nodes at the upstream and downstream of the subareas and the actual sewage amount of the upstream and downstream flowmeter, calculating the sewage amount of the area and the actual sewage amount, and thus calculating the external water amount and the external water ratio of the area;
s36', carrying out hierarchical visual evaluation display on the sub-area elements according to the external water ratio result.
In the present embodiment, the risk level of foreign water intrusion includes, but is not limited to: in general, more serious, serious and very serious, in this embodiment, the general grade, more serious grade, serious grade and very serious grade correspond to the cases that the external water ratio is in different ranges: 0-20%, 20-35%, 35-55%, 55-100%.
S4', outputting the risk assessment result of the invasion of the foreign water in each subarea of the research area.
In this embodiment, outputting the foreign water intrusion risk assessment results for each sub-region of the study area includes, but is not limited to: the water quantity II, the water ratio II-ratio, the water invasion risk level and the water invasion risk level distribution map of the W city east region.
As shown in fig. 9, in the present embodiment, the foreign water invasion risk assessment results of the respective subregions of the study region are output, including but not limited to: the invasion amount of the external water in the WL02-W2 sheet area is 290.0m3/d, the external water accounts for 44.62 percent, and the external water is evaluated to be serious; the invasion amount of the external water in the W1-W3-WL02-WL03 sheet area is 5490.0m3/d, the external water accounts for 61.00%, and the external water evaluation grade is very serious; the invasion amount of the external water in the WL03-WL09 sheet area is 5470.0m3/d, the external water accounts for 78.14%, and the external water evaluation grade is very serious; the invasion amount of the foreign water in the WL09-W4 sheet area was 370.0m3/d, the foreign water ratio was 37.00%, and the foreign water evaluation grade was serious.
In summary, compared with the existing drainage pipe network external water invasion risk assessment technology, the invention combines GIS and Python, develops a GUI visualization program for assessing the external water invasion risk, and realizes the automation, real-time dynamic assessment and result visualization of the drainage pipe network external water invasion risk assessment. The intelligent water service network external water intrusion risk assessment method has the characteristics of low cost, automatic assessment and the like, can realize long-time stable real-time online assessment, reduces the cost, improves the accuracy and reliability of the external water intrusion risk assessment of the drain pipe network, and provides a reference for intelligent construction of the external water intrusion assessment of the intelligent water service network.
The method realizes the external water invasion risk assessment based on the water yield method, fully utilizes a large amount of data with potential in the data platforms which are not communicated with each other, breaks through the data islands of different platforms, realizes the whole flow data integration assessment of urban external water assessment, realizes the real-time external water risk assessment of the integration of the water supply and drainage system, and has the advantages of high efficiency and real-time performance.
According to the invention, the automatic evaluation of the invasion risk of the water outside the drainage pipe network of the research area is realized based on the combination of Python and GIS, mainly based on the programming language of the Python computer, a series of algorithms are operated to visualize the automatic evaluation progress of the invasion risk of the water outside the drainage pipe network in the GIS, and the interactive degree of an evaluation system is improved.
The invention is not like the one-time evaluation work of foreign water invasion risk evaluation in the prior art, even if the pipe network structure is changed, the code is not required to be rewritten, the invention only needs to edit the value to be deleted under the condition that the field structure of the constructed attribute table is not changed, and the attribute table structure still meets the code operation requirement, thereby having the advantages of universality and normalization.
According to the invention, the risk assessment of the pipe network external water invasion is not carried out by adopting manual diagnosis, but the automatic risk assessment of the external water invasion is realized by compiling a visual computer program in a computer programming language, so that the time cost of the risk assessment of the external water invasion is greatly saved, and the method has the advantages of low cost, automation and visualization.
The invention can determine the priority of daily maintenance of the drainage pipe network according to the pipe network topological structure and the external water invasion risk levels of different subareas divided by the distribution density of the flow meters, can effectively reduce the workload of pipeline maintenance, reduces the input cost, is beneficial to promoting the working process of quality improvement and efficiency improvement of sewage treatment in various places and helps to quickly improve the quality of urban water environment.
The invention solves the technical problems of high external water risk assessment cost, large workload, low automation and interaction degree and complex assessment operation caused by the defect of data island in the prior art.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The automatic evaluation method for the invasion risk of the water coming from the outside of the drainage pipe network is characterized by comprising the following steps:
s1, collecting data of a water supply and drainage pipe network flow monitoring device of a preset drainage patch area and topological structure information of the patch area pipe network in real time, and arranging key node flow meters in the drainage pipe network to divide the preset drainage patch area into at least 2 patch area sub-areas;
s2, building a GIS geographic information system according to the flow monitoring equipment data of the water supply and drainage pipe network of the preset drainage patch and the patch pipe network topological structure information;
s3, combining and utilizing a Python tool and the GIS geographic information system, and evaluating the subarea of the area by utilizing preset logic to obtain drain pipe network outside water invasion risk information of the preset drain area;
s4, outputting the foreign water invasion risk assessment results of the subareas of the areas according to the foreign water invasion risk information of the drainage pipe network.
2. The automatic evaluation method for risk of intrusion of water into the outside of a water drain pipe network according to claim 1, wherein in the step S1, the data of the water supply and drain pipe network flow monitoring device includes: the method comprises the steps of sewage plant water inlet flow meter data, sewage lifting pump station flow meter data, key node online flow meter data in a pipe network and water user flow meter data for the pipe network.
3. The automatic assessment method for the invasion risk of the external water of the drainage pipe network according to claim 1, wherein in the step S1, a GIS drainage pipe line information management platform and a pipe network real-time operation state platform are utilized to obtain platform data, and the water supply and drainage pipe network flow monitoring equipment data and the district pipe network topology structure information are obtained through processing.
4. The automatic evaluation method for risk of intrusion of water coming from outside a drainage network according to claim 1, wherein in the step S2, the GIS geographic information system comprises: the network topology structure layer and the element class layer are used for the network topology structure layer.
5. The automatic assessment method for risk of intrusion of water coming from outside a drain pipe network according to claim 1, wherein in the step S3, a preset algorithm is run by using the Python tool to visualize the assessment progress of the risk information of intrusion of water coming from outside the drain pipe network in a GIS geographic information system.
6. The method for automatically evaluating the risk of intrusion of water into the outside of a drainage network according to claim 1, wherein the step S3 comprises:
s31, configuring a program running environment, importing layer data of the GIS geographic information system, and carrying out external water invasion risk assessment initialization on a drainage pipe network;
s32, obtaining geographic relation between water supply and drainage systems according to the layer data, and accordingly carrying out geographic corresponding operation of water supply and drainage nodes by calling a neighbor analysis Near tool of the Arcpy module;
s33, calling SearchCursor, updateCursor functions, traversing the water consumption and transfer coefficient field values of a water user layer in the GIS to obtain the drainage of the water user;
s34, according to a sewage node flow calculation algorithm, according to the drainage amount of the drainage user, solving the drainage amount of the sewage inspection well node;
s35, obtaining the water drainage amount to be discharged according to the upstream and downstream nodes of the subarea of the area, and solving the water drainage amount to be discharged and the actual water drainage amount of the subarea of the area by combining the actual water drainage amount measured by the upstream and downstream flow meters, so as to obtain the external water amount and the external water ratio of the area by processing;
s36, according to the external water proportion, processing to obtain external water proportion grade, and processing to obtain hierarchical visual evaluation data according to the subarea elements of the subarea of the patch.
7. The method for automatically evaluating risk of intrusion of water into the outside of a drainage pipe network according to claim 6, wherein the step S34 further comprises:
s341, establishing an uncomputed node library and a calculated node library according to the GIS geographic information system;
s342, traversing and judging whether adjacent upstream nodes of each water supply and drainage node are in a calculated node library in the GIS geographic information system or not:
s343, if yes, calculating the current flow of the water supply and drainage nodes according to a formula, and adding the current flow into the calculated node library;
s344, if not, adding the current water supply and drainage nodes into the uncomputed node library, and continuously traversing the judging operation until all the water supply and drainage nodes are added into the calculated node library;
s345, outputting the total flow of the water supply and drainage nodes, and corresponding to a preset storage flow field in the sewage inspection well.
8. The automatic risk assessment method for intrusion of water into the outside of a drainage pipe network according to claim 1, wherein in the step S4, the risk assessment result for intrusion of water into the outside includes: extraneous water amount information, extraneous water duty data, extraneous water intrusion risk level, and extraneous water intrusion risk level profile.
9. The method for automatically evaluating the risk of intrusion of water into the outside of a drainage pipe network according to claim 1, wherein in the step S4, the process is initialized for the key field values of the GIS layer attribute table in the GIS geographic information system.
10. An automatic evaluation system for risk of intrusion of water coming from outside a drainage pipe network, which is characterized by comprising:
the system comprises a data acquisition and slice region dividing module, a slice region dividing module and a water supply and drainage pipeline network dividing module, wherein the data acquisition and slice region dividing module is used for collecting data of water supply and drainage pipeline network flow monitoring equipment of a preset water drainage slice region and slice region pipeline network topological structure information in real time, and key node flow meters are arranged in the water drainage pipeline network to divide the preset water drainage slice region into at least 2 slice region areas;
the geographical information system building module is used for building a GIS geographical information system according to the data of the water supply and drainage pipe network flow monitoring equipment of the preset drainage patch area and the patch area pipe network topological structure information, and is connected with the data acquisition and patch area dividing module;
the foreign water invasion information evaluation module is used for evaluating and obtaining the foreign water invasion risk information of the drain pipe network of the preset drain sheet area by utilizing a Python tool and the GIS geographic information system in a combined mode and utilizing preset logic, and is connected with the geographic information system building module and the data acquisition and sheet area division module;
the evaluation result output module is used for outputting the external water invasion risk evaluation result of each zone subarea according to the external water invasion risk information of the drain pipe network, and is connected with the external water invasion information evaluation module.
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