Underground pipeline limited space hazard source management method and system

Abstract

The invention provides an underground pipeline limited space hazard source management method and system, and the method comprises the steps: obtaining underground pipeline structure information through a sensor group, and constructing a three-dimensional pipeline model and a hazard source information library; the pipeline quality value is calculated through the dangerous source information, and the pipeline level is set according to the pipeline quality value; calculating risk values of the pipeline according to the collected environment data and the quality value, ranking the risk values to obtain a pipeline risk ranking, and further obtaining a pipeline risk level; and comparing the pipeline danger level with the pipeline risk ranking, setting a danger source level according to a comparison result, and performing graded early warning and targeted processing on the terminal by a management system according to the danger source level. The management system can comprehensively assess the safety risk of the pipeline and classify different hazard sources according to the risk degree, so that the safety management level of the pipeline is improved. The safety risks can be effectively prevented and controlled, and the safety of workers is guaranteed.

Description

Technical Field

[0001] The present invention proposes a method and system for managing hazardous sources in a limited space of an underground pipeline, and relates to the technical field of hazardous source management, and specifically to the technical field of hazardous source management in a limited space of an underground pipeline. Background Art

[0002] During the construction of underground pipeline limited spaces, due to structural limitations or other reasons, these spaces usually have a series of safety risks, such as toxic gases, lack of oxygen, high temperature and high humidity. Therefore, there is an urgent need to study and apply hazard source management technology in underground pipeline limited spaces; the existing technology lacks systematic management, early warning and emergency response to the hazard sources in underground pipeline limited spaces. The quality and danger of underground pipelines cannot be responded to in a timely manner, and the importance and degree of danger of the hazard sources are not accurately understood, resulting in the inability to carry out hierarchical management. Summary of the invention

[0003] The present invention provides a method and system for managing dangerous sources in limited space of underground pipelines, which is used to solve the problem of lack of systematic management, early warning and emergency response of dangerous sources in limited space of underground pipelines in the prior art. The quality and danger of underground pipelines cannot be responded to in time, and the importance and danger level of dangerous sources are not understood accurately, resulting in the inability to carry out hierarchical management. Problems:

[0004] The present invention provides a method and system for managing hazardous sources in limited spaces of underground pipelines, the method comprising:

[0005] S1. The management system obtains underground pipeline structure information through a sensor group, constructs a three-dimensional pipeline model, obtains hazard source information based on the model, and constructs a hazard source information database;

[0006] S2. The management system calculates the pipeline quality value through the hazard source information and sets the pipeline level according to the pipeline quality value;

[0007] S3. The management system collects internal environmental data of the pipeline through a sensor group, calculates the risk value of the pipeline according to the environmental data combined with the quality value, ranks the risk values ​​to obtain a pipeline risk ranking, and obtains a pipeline hazard level according to the pipeline risk ranking combined with the pipeline level;

[0008] S4. Compare the pipeline hazard level with the pipeline risk ranking, set the hazard source level according to the comparison result, and the management system performs graded warning and targeted processing on the terminal according to the hazard source level.

[0009] Furthermore, the S1 includes:

[0010] S101, collecting underground pipeline structure information through a first sensor group, and constructing a three-dimensional pipeline model according to the underground pipeline structure information;

[0011] S102, obtaining pipeline model information according to the three-dimensional pipeline model, extracting pipeline internal hazard source information according to the pipeline model information, and constructing a hazard source information database according to the hazard source information.

[0012] Further, the S2 includes:

[0013] S201, marking the hazard source information database according to the pipeline information, so that each pipeline has the corresponding hazard source information in the hazard source information database;

[0014] S202, calculating the pipeline quality value through the hazard source information;

[0015] The pipeline quality value calculation formula is:

[0016]

[0017] Among them, Z is the pipeline quality value calculated based on the hazard source information, x 1 is the total number of high-voltage electrical equipment in the pipeline, x 2 is the number of high-voltage electrical equipment working in the pipeline at the current time, x 3 is the average vertical distance between all high-voltage electrical equipment in the pipeline and the nearest pipeline wall, y 1 is the total number of harmful gas types in the hazard source information database, y 2 is the number of harmful gas types in the pipeline at the current time, y 3 is the average vertical distance between all harmful gas sensors in the pipeline and the nearest pipeline wall, v 1 is the total number of equipment in the pipeline internal equipment hazardous source, v 2 is the number of equipment hazardous sources working in the pipeline at the current time, v 3 is the average of the vertical distances between the equipment in all equipment hazard sources in the pipeline and the nearest pipeline wall, and G is the total distance from the starting point to the end point of the pipeline;

[0018] The pipeline level is set for the pipeline according to the pipeline quality value. When the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, the pipeline is set as a second-level pipeline. When the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality value, the pipeline is set as a first-level pipeline.

[0019] Further, the S3 includes:

[0020] S301, collecting internal environmental information of the pipeline through the second sensor group, the environmental information including temperature, humidity, concentration of harmful gases and oxygen content in the pipeline; preprocessing the environmental information to obtain environmental data;

[0021] S302, calculating the risk value of the underground pipeline by combining the environmental data with the pipeline quality value;

[0022] The calculation formula of the risk value of the underground pipeline is:

[0023]

[0024] Where F is the risk value of underground pipelines, T 1 is the real-time temperature in the pipeline, T 2 is the historical average temperature in the pipeline, S 1 is the real-time humidity in the pipeline, S 2 is the historical average humidity in the pipeline, H 1 is the number of harmful gas types in the pipeline, H 2 is the total number of harmful gas types in the hazard source information database, O 1 is the real-time oxygen concentration in the pipeline, O 2 is the historical oxygen concentration in the pipeline, W 1 and W 2 is the weight parameter; the value range of F is 0 <F<1;

[0025] S303, rank the risk value of each pipeline from small to large to obtain a pipeline risk ranking, and multiply the risk ranking of each pipeline by the pipeline level of the pipeline to obtain a pipeline hazard level.

[0026] Further, the S4 includes:

[0027] S401, comparing the pipeline hazard level with the middle value of the pipeline risk ranking, when the pipeline hazard level is greater than 1.5 times of the middle value, setting the hazard source corresponding to the pipeline as a first-level hazard source, when the pipeline hazard level is less than or equal to 1.5 times of the middle value and greater than or equal to 0.5 times of the middle value, setting the hazard source corresponding to the pipeline as a second-level hazard source, when the pipeline hazard level is less than 0.5 of the middle value, setting the hazard source corresponding to the pipeline as a third-level hazard source;

[0028] S402: The management system issues warnings to terminals according to the levels of the hazard sources and performs targeted processing on the hazard sources.

[0029] Furthermore, the system comprises:

[0030] The hazard source information acquisition module is used to enable the management system to acquire underground pipeline structure information through the sensor group, build a three-dimensional pipeline model, and acquire hazard source information based on the model to build a hazard source information database;

[0031] A pipeline quality identification module is used to enable the management system to calculate the pipeline quality value through the hazard source information and set the pipeline level according to the pipeline quality value;

[0032] A pipeline risk identification module is used to enable the management system to collect internal environment data of the pipeline through a sensor group, calculate the risk value of the pipeline according to the environment data combined with the quality value, rank the risk values ​​to obtain a pipeline risk ranking, and obtain a pipeline hazard level according to the pipeline risk ranking combined with the pipeline level;

[0033] The graded warning module is used to compare the pipeline hazard level with the pipeline risk ranking, set the hazard source level according to the comparison result, and the management system performs graded warning and targeted processing on the terminal according to the hazard source level.

[0034] Furthermore, the hazard source information acquisition module includes:

[0035] A model building module, used to collect underground pipeline structure information through a first sensor group, and build a three-dimensional pipeline model according to the underground pipeline structure information;

[0036] The information base building module is used to obtain pipeline model information based on the three-dimensional pipeline model, extract the internal hazard source information of the pipeline based on the pipeline model information, and build a hazard source information base based on the hazard source information.

[0037] Furthermore, the pipeline quality determination module includes:

[0038] The marking module is used to mark the hazard source information library according to the pipeline information, so that each pipeline has the corresponding hazard source information in the hazard source information library;

[0039] The quality calculation module is used to calculate the pipeline quality value through the hazard source information;

[0040] The pipeline quality value calculation formula is:

[0041]

[0042] Among them, Z is the pipeline quality value calculated based on the hazard source information, x 1 is the total number of high-voltage electrical equipment in the pipeline, x 2 is the number of high-voltage electrical equipment working in the pipeline at the current time, x 3 is the average vertical distance between all high-voltage electrical equipment in the pipeline and the nearest pipeline wall, y1 is the total number of harmful gas types in the hazard source information database, y 2 is the number of harmful gas types in the pipeline at the current time, y 3 is the average vertical distance between all harmful gas sensors in the pipeline and the nearest pipeline wall, v 1 is the total number of equipment in the pipeline internal equipment hazardous source, v 2 is the number of equipment hazardous sources working in the pipeline at the current time, v 3 is the average of the vertical distances between the equipment in all equipment hazard sources in the pipeline and the nearest pipeline wall, and G is the total distance from the starting point to the end point of the pipeline;

[0043] The pipeline level is set for the pipeline according to the pipeline quality value. When the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, the pipeline is set as a second-level pipeline. When the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality value, the pipeline is set as a first-level pipeline.

[0044] Furthermore, the pipeline risk identification module includes:

[0045] An environmental information acquisition module, used to acquire the internal environmental information of the pipeline through the second sensor group, the environmental information including the temperature, humidity, concentration of harmful gases and oxygen content in the pipeline; and pre-process the environmental information to obtain environmental data;

[0046] A risk value calculation module, used to calculate the risk value of the underground pipeline by combining the environmental data with the pipeline quality value;

[0047] The calculation formula of the risk value of the underground pipeline is:

[0048]

[0049] Where F is the risk value of underground pipelines, T 1 is the real-time temperature in the pipeline, T 2 is the historical average temperature in the pipeline, S 1 is the real-time humidity in the pipeline, S 2 is the historical average humidity in the pipeline, H 1 is the number of harmful gas types in the pipeline, H 2 is the total number of harmful gas types in the hazard source information database, O 1 is the real-time oxygen concentration in the pipeline, O 2 is the historical oxygen concentration in the pipeline, W 1 and W 2 is the weight parameter; the value range of F is 0 <F<1;

[0050] The hazard level acquisition module is used to rank the risk value of each pipeline from small to large to obtain the pipeline risk ranking, and multiply the risk ranking of each pipeline by the pipeline level of the pipeline to obtain the pipeline hazard level.

[0051] Furthermore, the hierarchical warning module includes:

[0052] A comparison module is used to compare the pipeline hazard level with the middle value of the pipeline risk ranking, and when the pipeline hazard level is greater than 1.5 times of the middle value, the hazard source corresponding to the pipeline is set as a first-level hazard source; when the pipeline hazard level is less than or equal to 1.5 times of the middle value and greater than or equal to 0.5 times of the middle value, the hazard source corresponding to the pipeline is set as a second-level hazard source; when the pipeline hazard level is less than 0.5 of the middle value, the hazard source corresponding to the pipeline is set as a third-level hazard source;

[0053] The early warning module is used to enable the management system to issue early warnings to terminals according to the level of dangerous sources and to carry out targeted treatment of the dangerous sources.

[0054] Beneficial effects of the present invention:

[0055] The present invention proposes a method and system for managing dangerous sources in limited space of underground pipelines. The management system obtains structural information of underground pipelines through a sensor group and constructs a corresponding three-dimensional pipeline model. The precedent of the model realizes the visual display of pipelines and items and equipment in the pipelines, making the management system's understanding of pipelines more automated. Through the model, the dangerous source information of the pipeline can be obtained and stored in the dangerous source information library, which is convenient for the extraction and tracing of dangerous source information. At the same time, the system calculates the quality value of the pipeline according to the dangerous source information, and sets the corresponding pipeline level according to the calculation result. The health of the pipeline after being affected by the dangerous source can be clearly understood. In order to more comprehensively evaluate the risk of the pipeline, the management system collects environmental data inside the pipeline through a sensor group. Combined with the quality value of the pipeline, the system evaluates and ranks the risk of the pipeline to obtain the risk ranking of the pipeline. According to the risk ranking and pipeline level of the pipeline, the system can derive the dangerous level of the pipeline. The system compares the dangerous level of the pipeline with the risk ranking of the pipeline. According to the comparison result, the system can determine the level of the dangerous source. According to the level of the dangerous source, the system can perform graded warning and targeted processing on the relevant terminals. Through the above process, the management system can comprehensively evaluate the safety risks of the pipeline, and classify and process different dangerous sources according to the risk level, thereby improving the safety management level of the pipeline. These safety risks can be effectively prevented and controlled to ensure the safety of staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 The invention relates to a method for managing hazardous sources in confined spaces of underground pipelines. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0058] In one embodiment of the present invention, a method and system for managing hazardous sources in a limited space of an underground pipeline is proposed by the present invention, and the method comprises:

[0059] S1. The management system obtains underground pipeline structure information through a sensor group, constructs a three-dimensional pipeline model, obtains hazard source information based on the model, and constructs a hazard source information database;

[0060] S2. The management system calculates the pipeline quality value through the hazard source information and sets the pipeline level according to the pipeline quality value;

[0061] S3. The management system collects internal environmental data of the pipeline through a sensor group, calculates the risk value of the pipeline according to the environmental data combined with the quality value, ranks the risk values ​​to obtain a pipeline risk ranking, and obtains a pipeline hazard level according to the pipeline risk ranking combined with the pipeline level;

[0062] S4. Compare the pipeline hazard level with the pipeline risk ranking, set the hazard source level according to the comparison result, and the management system performs graded warning and targeted processing on the terminal according to the hazard source level.

[0063] The working principle of the above technical solution is: first, the management system obtains underground pipeline structure information through a sensor group, constructs a three-dimensional pipeline model, and obtains hazard source information based on the model to construct a hazard source information database; then, the management system calculates the pipeline quality value through the hazard source information, and sets the pipeline level according to the pipeline quality value; the management system collects pipeline internal environmental data through a sensor group, calculates the pipeline risk value according to the environmental data combined with the quality value, ranks the risk values, obtains the pipeline risk ranking, and obtains the pipeline hazard level according to the pipeline risk ranking combined with the pipeline level; finally, the pipeline hazard level is compared with the pipeline risk ranking, and the hazard source level is set according to the comparison result, and the management system performs graded warning and targeted processing on the terminal according to the hazard source level.

[0064] The technical effect of the above technical solution is: the management system obtains the structural information of the underground pipeline through the sensor group and constructs the corresponding three-dimensional pipeline model. The precedent of the model realizes the visual display of the pipeline and the items and equipment in the pipeline, making the management system's understanding of the pipeline more automated. Through the model, the hazardous source information of the pipeline can be obtained and stored in the hazardous source information library, which is convenient for the extraction and tracing of the hazardous source information. At the same time, the system calculates the quality value of the pipeline according to the hazardous source information and sets the corresponding pipeline level according to the calculation result. It can clearly understand the health of the pipeline after being affected by the hazardous source. In order to more comprehensively evaluate the risk of the pipeline, the management system collects the environmental data inside the pipeline through the sensor group. Combined with the quality value of the pipeline, the system evaluates and ranks the risk of the pipeline to obtain the risk ranking of the pipeline. According to the risk ranking and pipeline level of the pipeline, the system can derive the danger level of the pipeline. The system compares the danger level of the pipeline with the risk ranking of the pipeline. According to the comparison results, the system can determine the level of the hazardous source. According to the level of the hazardous source, the system can perform graded warning and targeted processing on the relevant terminals. Through the above process, the management system can comprehensively evaluate the safety risks of the pipeline, and classify and process different hazardous sources according to the degree of risk, thereby improving the safety management level of the pipeline. These safety risks can be effectively prevented and controlled to ensure the safety of staff.

[0065] In one embodiment of the present invention, the S1 includes:

[0066] S101, collecting underground pipeline structure information through a first sensor group, and constructing a three-dimensional pipeline model according to the underground pipeline structure information;

[0067] S102, obtaining pipeline model information according to the three-dimensional pipeline model, extracting pipeline internal hazard source information according to the pipeline model information, and constructing a hazard source information database according to the hazard source information.

[0068] The working principle of the above technical solution is: collect underground pipeline structure information through the first sensor group, and build a three-dimensional pipeline model according to the underground pipeline structure information; the first sensor group includes a camera, an altimeter and a GPS; set up a drone on the ground, quickly and accurately collect data inside the data pipeline through the drone, obtain pipeline model information according to the three-dimensional pipeline model, extract the internal hazard source information of the pipeline according to the pipeline model information, and build a hazard source information library according to the hazard source information. The hazard source information library includes electrical hazard sources, chemical hazard sources and equipment hazard sources. Electrical hazard sources include objects with high voltage electricity, chemical hazard sources include toxic gases, flammable and explosive gases and corrosive liquids, and equipment hazard sources include objects weighing more than 100Kg and mobile equipment. By combining monitoring with cloud services, real-time pipeline data is monitored and analyzed. When an obstacle occurs in the pipeline, the drone will promptly feedback information to help maintenance personnel formulate a more accurate maintenance plan. At the same time, the data is stored in the cloud disk for refined analysis to improve pipeline safety and reliability. The management system construction progress management and control analysis function system is used to perform range control and present it in a visual way. Regular air quality monitoring should be carried out in the confined space of underground pipelines to ensure that indicators such as oxygen content, harmful gas concentration, temperature, and humidity in the air meet safety standards; lighting system: the light in the confined space of underground pipelines is usually dim. In order to ensure the safety of workers, a lighting system needs to be installed to ensure that the work area is well lit; real-time monitoring of dangerous sources in the confined space of underground pipelines, such as high-voltage wires, flammable and explosive gases, etc.; emergency rescue facilities: emergency rescue facilities such as respirators, first aid kits, etc. should be equipped in the confined space of underground pipelines to enable timely handling of emergencies in emergency situations.

[0069] The technical effect of the above technical solution is: through the first sensor group including cameras, altimeters and GPS, the drone can quickly and accurately collect data, including various data of the pipeline structure and its surrounding environment, records of location and size, and map making, and carry out targeted safety management. Through cameras, altimeters, GPS navigation and other equipment, image acquisition and remote sensing data acquisition work are carried out above the pipeline. These data can be processed by intelligent algorithms, presented and analyzed using three-dimensional imaging technology, and quickly and accurately conveyed to operators in a short time, thereby improving economic benefits. The management system can collect structural information of underground pipelines. According to the underground pipeline structural information, the system can construct a pipeline model with three-dimensional features. Through the model, the system can deeply analyze the structural features inside the pipeline and extract the hazard source information inside the pipeline. When extracting the hazard source information, the system can identify objects with high voltage electricity and classify them as electrical hazard sources. Similarly, the system can also identify toxic gases, flammable and explosive gases and corrosive liquids and classify them as chemical hazard sources. In addition, the system can also identify objects and motorized equipment weighing more than 100Kg and classify them as equipment hazard sources. All hazard source information will be integrated and stored in the hazard source information library. By building a hazard source information library, the management system can have a more comprehensive understanding of the hazard source situation inside the pipeline and provide it for subsequent pipeline management and safety assessment. Through this technical solution, the management system can effectively obtain the structural information of the underground pipeline and build a pipeline model with three-dimensional features based on the information. According to the pipeline model, the system can extract the hazard source information inside the pipeline and classify it and store it in the hazard source information library. In this way, the management system can more comprehensively evaluate the safety risks of the pipeline and improve the safety management level of the pipeline.

[0070] In one embodiment of the present invention, S2 includes:

[0071] S201, marking the hazard source information database according to the pipeline information, so that each pipeline has the corresponding hazard source information in the hazard source information database;

[0072] S202, calculating the pipeline quality value through the hazard source information;

[0073] The pipeline quality value calculation formula is:

[0074]

[0075] Among them, Z is the pipeline quality value calculated based on the hazard source information, x 1 is the total number of high-voltage electrical equipment in the pipeline, x 2 is the number of high-voltage electrical equipment working in the pipeline at the current time, x 3is the average vertical distance between all high-voltage electrical equipment in the pipeline and the nearest pipeline wall, y 1 is the total number of harmful gas types in the hazard source information database, y 2 is the number of harmful gas types in the pipeline at the current time, y 3 is the average vertical distance between all harmful gas sensors in the pipeline and the nearest pipeline wall, v 1 is the total number of equipment in the pipeline internal equipment hazardous source, v 2 is the number of equipment hazardous sources working in the pipeline at the current time, v 3 is the average of the vertical distances between the equipment in all equipment hazard sources in the pipeline and the nearest pipeline wall, and G is the total distance from the starting point to the end point of the pipeline;

[0076] The pipeline level is set for the pipeline according to the pipeline quality value. When the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, the pipeline is set as a second-level pipeline. When the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality value, the pipeline is set as a first-level pipeline.

[0077] The working principle of the above technical solution is: mark the hazard source information library according to the pipeline information, so that each pipeline has the corresponding hazard source information in the hazard source information library; calculate the pipeline quality value through the hazard source information; the pipeline quality value is the quality assessment value of the pipeline affected by the hazard source. Set the pipeline level according to the pipeline quality value. When the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, set the pipeline as a second-level pipeline. When the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality value, set the pipeline as a first-level pipeline. The first-level pipeline is a pipeline with better quality, and the second-level quality is a pipeline with poorer quality. The first-level pipeline and the second-level pipeline are the pipeline levels.

[0078] The technical effect of the above technical solution is: by marking the hazard source information library according to the pipeline information, each pipeline can have the corresponding hazard source information in the hazard source information library. In this way, for each pipeline, the system can accurately obtain the hazard source level information related to it. According to the hazard source information, the system can calculate the quality value of the pipeline. According to the calculated pipeline quality value, the system can set the corresponding pipeline level for the pipeline. Specifically, when the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, the pipeline is set as a first-level pipeline; when the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality average, the pipeline is set as a second-level pipeline. The first-level pipeline indicates good quality, and the second-level pipeline indicates poor quality. In this way, the system can classify and divide each pipeline according to the pipeline quality value, so as to carry out targeted management and maintenance. The formula combines the calculation of the distance between the hazard source and the pipeline wall, making the calculation result more accurate, making full use of the high-voltage electrical equipment data, harmful gas data and hazard source equipment data, making the calculation result more targeted; through this technical solution, the system can calculate the quality value of the pipeline according to the hazard source information, and set the corresponding pipeline level for the pipeline according to the size of the quality value. In this way, the system can evaluate and manage pipelines more carefully, improving the safety and reliability of pipelines.

[0079] In one embodiment of the present invention, S3 includes:

[0080] S301, collecting internal environmental information of the pipeline through the second sensor group, the environmental information including temperature, humidity, concentration of harmful gases and oxygen content in the pipeline; preprocessing the environmental information to obtain environmental data;

[0081] S302, calculating the risk value of the underground pipeline by combining the environmental data with the pipeline quality value;

[0082] The calculation formula of the risk value of the underground pipeline is:

[0083]

[0084] Where F is the risk value of underground pipelines, T 1 is the real-time temperature in the pipeline, T 2 is the historical average temperature in the pipeline, S 1 is the real-time humidity in the pipeline, S 2 is the historical average humidity in the pipeline, H 1 is the number of harmful gas types in the pipeline, H 2 is the total number of harmful gas types in the hazard source information database, O 1 is the real-time oxygen concentration in the pipeline, O 2 is the historical oxygen concentration in the pipeline, W 1 and W2 is a weight parameter; the value range of F is 0 < F < 1;

[0085] S303. Rank the risk values of each pipeline from small to large to obtain the pipeline risk ranking, and multiply the risk ranking of each pipeline by the pipeline level of the pipeline to obtain the pipeline danger level.

[0086] The working principle of the above technical solution is as follows: collect the internal environment information of the pipeline through the second sensor group, and the environment information includes the temperature, humidity, harmful gas concentration and oxygen content in the pipeline; the second sensor group includes a temperature sensor, a humidity sensor, a harmful gas sensor and an oxygen sensor; preprocess the environment information to obtain environment data; calculate the risk value of the underground pipeline through the environment data combined with the pipeline quality value; calculate the risk value of the underground pipeline through the real-time temperature in the pipeline, the average value of the historical temperature in the pipeline, the real-time humidity in the pipeline, the average value of the historical humidity in the pipeline, the number of types of harmful gases existing in the pipeline, the total number of types of harmful gases in the hazard source information database, the real-time oxygen concentration in the pipeline, the historical oxygen concentration in the pipeline and the weight parameter; the value range of F is 0 < F < 1; rank the risk values of each pipeline from small to large to obtain the pipeline risk ranking, and multiply the risk ranking of each pipeline by the pipeline level of the pipeline to obtain the pipeline danger level. The harmful gas sensor is designed by the user according to the actual situation.

[0087] The technical effect of the above technical solution is: through the second sensor group including temperature sensors, humidity sensors, harmful gas sensors and oxygen sensors, the management system can collect the environmental information inside the pipeline more comprehensively. The environmental information includes the temperature, humidity, harmful gas concentration and oxygen content in the pipeline. Through the collected environmental information, the system pre-processes it to obtain a set of environmental data. By combining the environmental data with the quality value of the pipeline, the system can calculate the risk value of the underground pipeline. The pipeline risk value calculated by this system combines the quality value factor, so that the calculation result can more comprehensively reflect the environmental risk state in the pipeline and realize more accurate monitoring of pipeline safety. After calculating the risk value of each pipeline, the system will rank the risk values ​​of all pipelines from small to large to obtain the risk ranking of the pipeline. Then, the risk ranking of each pipeline is multiplied by its corresponding pipeline level to obtain the danger level of the pipeline. The method for obtaining the pipeline danger level combines the two factors of risk ranking and pipeline level, taking into account both the pipeline quality level and the pipeline risk ranking, so that the acquisition of the danger level is more comprehensive, and the amount of calculation is fully reduced. Through this technical solution, the environmental information inside the pipeline can be collected and the risk value of the underground pipeline can be calculated. By multiplying the pipeline risk ranking and pipeline level, the system can derive the pipeline's danger level. In this way, the system can more comprehensively assess the pipeline risk so as to carry out targeted management and treatment and improve the safety and reliability of the pipeline.

[0088] In one embodiment of the present invention, the S4 includes:

[0089] S401, comparing the pipeline hazard level with the middle value of the pipeline risk ranking, when the pipeline hazard level is greater than 1.5 times of the middle value, setting the hazard source corresponding to the pipeline as a first-level hazard source, when the pipeline hazard level is less than or equal to 1.5 times of the middle value and greater than or equal to 0.5 times of the middle value, setting the hazard source corresponding to the pipeline as a second-level hazard source, when the pipeline hazard level is less than 0.5 of the middle value, setting the hazard source corresponding to the pipeline as a third-level hazard source;

[0090] S402: The management system issues warnings to terminals according to the levels of the hazard sources and performs targeted processing on the hazard sources.

[0091] The working principle of the above technical solution is: compare the pipeline hazard level with the middle value of the pipeline risk ranking. When the pipeline hazard level is greater than 1.5 times of the middle value, set the corresponding hazard source of the pipeline as a first-level hazard source. When the pipeline hazard level is less than or equal to 1.5 times of the middle value and greater than or equal to 0.5 times of the middle value, set the corresponding hazard source of the pipeline as a second-level hazard source. When the pipeline hazard level is less than 0.5 of the middle value, set the corresponding hazard source of the pipeline as a third-level hazard source. The management system issues an early warning to the terminal according to the hazard source level and conducts targeted treatment on the hazard source. Generate a project risk list according to the hazard source level. The project risk list includes multiple pipeline hazard sources and hazard source levels. According to the project risk list, monitor pipeline safety in real time, issue a real-time graded early warning according to the monitoring results, and initiate safety protection measures. The first-level hazard source, the second-level hazard source, and the third-level hazard source are the hazard source levels.

[0092] The technical effect of the above technical solution is: compare the pipeline hazard level with the middle value of the pipeline risk ranking. According to the obtained pipeline hazard level and the middle value of the pipeline risk ranking, the system will compare them. Set the hazard source level according to the comparison result. When the pipeline hazard level is greater than 1.5 times the middle value, the system sets the hazard source corresponding to the pipeline as a first-level hazard source. When the pipeline hazard level is less than or equal to 1.5 times the middle value, and greater than or equal to 0.5 times the middle value, the system sets the hazard source corresponding to the pipeline as a second-level hazard source. When the pipeline hazard level is less than 0.5 of the middle value, the system sets the hazard source corresponding to the pipeline as a third-level hazard source. By grading the hazard sources, targeted warnings can be given to the hazard sources to understand the degree of danger of the hazard sources in the pipeline. According to the hazard source level, the system will give graded warnings to the terminal. A first-level hazard source will trigger a high-level warning and require emergency treatment. A second-level hazard source will trigger a medium-level warning and require timely treatment. A third-level hazard source will trigger a low-level warning and require ordinary treatment. According to the hazard source level, the system will generate a project risk list containing multiple pipeline hazard sources and corresponding hazard source levels. The system will monitor pipeline safety in real time according to the project risk list. Based on the monitoring results, the system will issue real-time graded warnings for pipelines. The warning level is determined according to the level of the hazard source. At the same time, the system will initiate corresponding safety protection measures to deal with pipeline risks.

[0093] In one embodiment of the present invention, the system comprises:

[0094] The hazard source information acquisition module is used to enable the management system to acquire underground pipeline structure information through the sensor group, build a three-dimensional pipeline model, and acquire hazard source information based on the model to build a hazard source information database;

[0095] A pipeline quality identification module is used to enable the management system to calculate the pipeline quality value through the hazard source information and set the pipeline level according to the pipeline quality value;

[0096] A pipeline risk identification module is used to enable the management system to collect internal environment data of the pipeline through a sensor group, calculate the risk value of the pipeline according to the environment data combined with the quality value, rank the risk values ​​to obtain a pipeline risk ranking, and obtain a pipeline hazard level according to the pipeline risk ranking combined with the pipeline level;

[0097] The graded warning module is used to compare the pipeline hazard level with the pipeline risk ranking, set the hazard source level according to the comparison result, and the management system performs graded warning and targeted processing on the terminal according to the hazard source level.

[0098] The working principle of the above technical solution is as follows: the hazard source information acquisition module is used to enable the management system to obtain underground pipeline structure information through a sensor group, construct a three-dimensional pipeline model, and obtain hazard source information based on the model to construct a hazard source information database; the pipeline quality judgment module is used to enable the management system to calculate the pipeline quality value through the hazard source information, and set the pipeline level according to the pipeline quality value; the pipeline risk judgment module is used to enable the management system to collect pipeline internal environmental data through a sensor group, calculate the pipeline risk value according to the environmental data combined with the quality value, rank the risk values, obtain the pipeline risk ranking, and obtain the pipeline hazard level according to the pipeline risk ranking combined with the pipeline level; the graded warning module is used to compare the pipeline hazard level with the pipeline risk ranking, set the hazard source level according to the comparison result, and the management system performs graded warning and targeted processing on the terminal according to the hazard source level.

[0099] The technical effect of the above technical solution is: the hazard source information acquisition module of the management system obtains the structural information of the underground pipeline through the sensor group and constructs the corresponding three-dimensional pipeline model. The precedent of the model realizes the visual display of the pipeline and the items and equipment in the pipeline, making the management system's understanding of the pipeline more automated. Through the model, the hazard source information of the pipeline can be obtained and stored in the hazard source information library, which is convenient for the extraction and tracing of the hazard source information. At the same time, the pipeline quality identification module of the system calculates the quality value of the pipeline according to the hazard source information, and sets the corresponding pipeline level according to the calculation result. It can clearly understand the health of the pipeline after being affected by the hazard source. In order to more comprehensively evaluate the risk of the pipeline, the pipeline risk identification module of the management system collects the environmental data inside the pipeline through the sensor group. Combined with the quality value of the pipeline, the system evaluates and ranks the risk of the pipeline and obtains the risk ranking of the pipeline. The graded warning module can derive the hazard level of the pipeline according to the risk ranking and pipeline level of the pipeline. The system compares the hazard level of the pipeline with the risk ranking of the pipeline. According to the comparison results, the system can determine the level of the hazard source. According to the level of the hazard source, the system can perform graded warning and targeted processing on the relevant terminals. Through the above process, the management system can comprehensively evaluate the safety risks of the pipeline and classify and handle different hazard sources according to the risk level, thus improving the safety management level of the pipeline. These safety risks can be effectively prevented and controlled to ensure the safety of the staff.

[0100] In one embodiment of the present invention, the hazard source information acquisition module includes:

[0101] A model building module, used to collect underground pipeline structure information through a first sensor group, and build a three-dimensional pipeline model according to the underground pipeline structure information;

[0102] The information base building module is used to obtain pipeline model information based on the three-dimensional pipeline model, extract the internal hazard source information of the pipeline based on the pipeline model information, and build a hazard source information base based on the hazard source information.

[0103] The working principle of the above technical solution is as follows: the model building module is used to collect underground pipeline structure information through the first sensor group, and build a three-dimensional pipeline model according to the underground pipeline structure information; the first sensor group includes a camera, an altimeter and a GPS; the information library building module is used to obtain pipeline model information according to the three-dimensional pipeline model, extract the internal hazard source information of the pipeline according to the pipeline model information, and build a hazard source information library according to the hazard source information. The hazard source information library includes electrical hazard sources, chemical hazard sources and equipment hazard sources. Electrical hazard sources include objects with high voltage electricity, chemical hazard sources include toxic gases, flammable and explosive gases and corrosive liquids, and equipment hazard sources include objects weighing more than 100Kg and motorized equipment.

[0104] The technical effect of the above technical solution is: the model building module includes a camera, an altimeter and a GPS through the first sensor group, and the management system can collect the structural information of the underground pipeline. According to the underground pipeline structural information, the system can construct a pipeline model with three-dimensional features. Through the model, the system can deeply analyze the structural characteristics inside the pipeline and extract the hazard source information inside the pipeline. When extracting the hazard source information, the system can identify objects with high voltage electricity and classify them as electrical hazard sources. Similarly, the system can also identify toxic gases, flammable and explosive gases and corrosive liquids and classify them as chemical hazard sources. In addition, the system can also identify objects and mobile equipment weighing more than 100Kg and classify them as equipment hazard sources. All hazard source information will be integrated and stored in the hazard source information library. By constructing the hazard source information library, the information library building module enables the management system to have a more comprehensive understanding of the hazard source situation inside the pipeline and provide it for subsequent pipeline management and safety assessment. Through this technical solution, the management system can effectively obtain the structural information of the underground pipeline and construct a pipeline model with three-dimensional features based on the information. According to the pipeline model, the system can extract the hazard source information inside the pipeline and store it in the hazard source information database. In this way, the management system can more comprehensively evaluate the safety risks of the pipeline and improve the safety management level of the pipeline.

[0105] In one embodiment of the present invention, the pipeline quality determination module includes:

[0106] The marking module is used to mark the hazard source information library according to the pipeline information, so that each pipeline has the corresponding hazard source information in the hazard source information library;

[0107] The quality calculation module is used to calculate the pipeline quality value through the hazard source information;

[0108] The pipeline quality value calculation formula is:

[0109]

[0110] Among them, Z is the pipeline quality value calculated based on the hazard source information, x 1 is the total number of high-voltage electrical equipment in the pipeline, x 2 is the number of high-voltage electrical equipment working in the pipeline at the current time, x 3 is the average vertical distance between all high-voltage electrical equipment in the pipeline and the nearest pipeline wall, y 1 is the total number of harmful gas types in the hazard source information database, y 2 is the number of harmful gas types in the pipeline at the current time, y 3 is the average vertical distance between all harmful gas sensors in the pipeline and the nearest pipeline wall, v1 is the total number of equipment in the pipeline internal equipment hazardous source, v 2 is the number of equipment hazardous sources working in the pipeline at the current time, v 3 is the average of the vertical distances between the equipment in all equipment hazard sources in the pipeline and the nearest pipeline wall, and G is the total distance from the starting point to the end point of the pipeline;

[0111] The pipeline level is set for the pipeline according to the pipeline quality value. When the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, the pipeline is set as a second-level pipeline. When the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality value, the pipeline is set as a first-level pipeline.

[0112] The working principle of the above technical solution is as follows: the marking module is used to mark the hazard source information library according to the pipeline information, so that each pipeline has the corresponding hazard source information in the hazard source information library;

[0113] The quality calculation module is used to calculate the pipeline quality value through the hazard source information;

[0114] The pipeline level is set for the pipeline according to the pipeline quality value. When the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, the pipeline is set as a second-level pipeline. When the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality value, the pipeline is set as a first-level pipeline. A first-level pipeline is a pipeline with better quality, and a second-level pipeline is a pipeline with worse quality. The first-level pipeline and the second-level pipeline are the pipeline levels.

[0115] The technical effect of the above technical solution is: the marking module marks the hazard source information library according to the pipeline information, and each pipeline can have the corresponding hazard source information in the hazard source information library. In this way, for each pipeline, the system can accurately obtain the hazard source level information related to it. The quality calculation module can calculate the quality value of the pipeline according to the hazard source information. According to the calculated pipeline quality value, the system can set the corresponding pipeline level for the pipeline. Specifically, when the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, the pipeline is set as a first-level pipeline; when the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality average, the pipeline is set as a second-level pipeline. The first-level pipeline indicates good quality, and the second-level pipeline indicates poor quality. In this way, the system can classify and divide each pipeline according to the pipeline quality value, so as to carry out targeted management and maintenance. The formula combines the calculation of the distance between some hazard sources and the pipeline wall, which makes the calculation result more accurate and more targeted; through this technical solution, the system can calculate the quality value of the pipeline according to the hazard source information, and set the corresponding pipeline level for the pipeline according to the size of the quality value. In this way, the system can evaluate and manage pipelines more carefully, improving the safety and reliability of pipelines.

[0116] In one embodiment of the present invention, the pipeline risk identification module includes:

[0117] An environmental information acquisition module, used to acquire the internal environmental information of the pipeline through the second sensor group, the environmental information including the temperature, humidity, concentration of harmful gases and oxygen content in the pipeline; and pre-process the environmental information to obtain environmental data;

[0118] A risk value calculation module, used to calculate the risk value of the underground pipeline by combining the environmental data with the pipeline quality value;

[0119] The calculation formula of the risk value of the underground pipeline is:

[0120]

[0121] Where F is the risk value of underground pipelines, T 1 is the real-time temperature in the pipeline, T 2 is the historical average temperature in the pipeline, S 1 is the real-time humidity in the pipeline, S 2 is the historical average humidity in the pipeline, H 1 is the number of harmful gas types in the pipeline, H 2 is the total number of harmful gas types in the hazard source information database, O 1 is the real-time oxygen concentration in the pipeline, O 2 is the historical oxygen concentration in the pipeline, W 1 and W 2 is the weight parameter; the value range of F is 0 <F<1;

[0122] The hazard level acquisition module is used to rank the risk value of each pipeline from small to large to obtain the pipeline risk ranking, and multiply the risk ranking of each pipeline by the pipeline level of the pipeline to obtain the pipeline hazard level.

[0123] The working principle of the above technical solution is: the environmental information acquisition module is used to collect the internal environmental information of the pipeline through the second sensor group, and the environmental information includes the temperature, humidity, harmful gas concentration and oxygen content in the pipeline; the second sensor group includes a temperature sensor, a humidity sensor, a harmful gas sensor and an oxygen sensor; the environmental information is preprocessed to obtain environmental data; the risk value calculation module is used to calculate the risk value of the underground pipeline through the environmental data combined with the pipeline quality value; the hazard level acquisition module is used to rank the risk value of each pipeline from small to large to obtain the pipeline risk ranking, and the risk ranking of each pipeline is multiplied by the pipeline level of the pipeline to obtain the pipeline hazard level.

[0124] The technical effect of the above technical solution is: the environmental information acquisition module includes a temperature sensor, a humidity sensor, a harmful gas sensor and an oxygen sensor through the second sensor group, and the management system can more comprehensively collect the environmental information inside the pipeline. The environmental information includes the temperature, humidity, harmful gas concentration and oxygen content in the pipeline. Through the collected environmental information, the system pre-processes it to obtain a set of environmental data. By combining the environmental data with the quality value of the pipeline, the system can calculate the risk value of the underground pipeline. The pipeline risk value calculated by this system combines the quality value factor, so that the calculation result can more comprehensively reflect the environmental risk state in the pipeline and realize more accurate monitoring of pipeline safety. After the risk value calculation module calculates the risk value of each pipeline, the system will rank the risk values ​​of all pipelines from small to large to obtain the risk ranking of the pipeline. Then, the risk ranking of each pipeline is multiplied by its corresponding pipeline level to obtain the danger level of the pipeline. The method for obtaining the pipeline danger level combines the two factors of risk ranking and pipeline level, taking into account both the pipeline quality level and the pipeline risk ranking, so that the acquisition of the danger level is more comprehensive, and the amount of calculation is fully reduced. Through this technical solution, the environmental information inside the pipeline can be collected and the risk value of the underground pipeline can be calculated. By multiplying the pipeline risk ranking and pipeline level, the system can derive the pipeline's danger level. In this way, the system can more comprehensively assess the pipeline risk so as to carry out targeted management and treatment and improve the safety and reliability of the pipeline.

[0125] In one embodiment of the present invention, the hierarchical warning module includes:

[0126] A comparison module is used to compare the pipeline hazard level with the middle value of the pipeline risk ranking, and when the pipeline hazard level is greater than 1.5 times of the middle value, the hazard source corresponding to the pipeline is set as a first-level hazard source; when the pipeline hazard level is less than or equal to 1.5 times of the middle value and greater than or equal to 0.5 times of the middle value, the hazard source corresponding to the pipeline is set as a second-level hazard source; when the pipeline hazard level is less than 0.5 of the middle value, the hazard source corresponding to the pipeline is set as a third-level hazard source;

[0127] The early warning module is used to enable the management system to issue early warnings to terminals according to the level of dangerous sources and to carry out targeted treatment of the dangerous sources.

[0128] The working principle of the above technical solution is as follows: the comparison module is used to compare the pipeline hazard level with the middle value of the pipeline risk ranking. When the pipeline hazard level is greater than 1.5 times of the middle value, the hazard source corresponding to the pipeline is set as a first-level hazard source. When the pipeline hazard level is less than or equal to 1.5 times of the middle value and greater than or equal to 0.5 times of the middle value, the hazard source corresponding to the pipeline is set as a second-level hazard source. When the pipeline hazard level is less than 0.5 of the middle value, the hazard source corresponding to the pipeline is set as a third-level hazard source. The early warning module is used to enable the management system to issue early warnings to the terminal according to the hazard level and to carry out targeted treatment of the hazard. A project risk list is generated according to the hazard level; the project risk list includes multiple pipeline hazard sources and hazard levels; according to the project risk list, real-time monitoring of pipeline safety is carried out, real-time graded early warnings are carried out according to the monitoring results, and safety protection measures are initiated.

[0129] The technical effect of the above technical solution is: the system will compare the obtained pipeline hazard level and pipeline risk ranking according to the comparison module. The hazard source level is set according to the comparison result. When the pipeline hazard level is greater than 1.5 times the middle value, the system sets the hazard source corresponding to the pipeline as a first-level hazard source. When the pipeline hazard level is less than or equal to 1.5 times the middle value and greater than or equal to 0.5 times the middle value, the system sets the hazard source corresponding to the pipeline as a second-level hazard source. When the pipeline hazard level is less than 0.5 of the middle value, the system sets the hazard source corresponding to the pipeline as a third-level hazard source. By grading the hazard sources, targeted warnings can be given to the hazard sources to understand the degree of danger of the hazard sources in the pipeline. According to the hazard source level, the system will give graded warnings to the terminal. A first-level hazard source will trigger a high-level warning and require emergency treatment. A second-level hazard source will trigger a medium-level warning and require timely treatment. A third-level hazard source will trigger a low-level warning and require ordinary treatment. According to the hazard source level, the system will generate a project risk list containing multiple pipeline hazard sources and corresponding hazard source levels. The system will monitor pipeline safety in real time according to the project risk list. According to the monitoring results, the system will conduct real-time graded warnings for pipelines. The warning level is determined according to the level of the hazard source. At the same time, the system will initiate corresponding safety protection measures to deal with pipeline risks.

[0130] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for managing hazardous sources in limited space of underground pipelines, characterized in that: The method comprises: S1. The management system obtains underground pipeline structure information through a sensor group, constructs a three-dimensional pipeline model, obtains hazard source information based on the model, and constructs a hazard source information database; S2. The management system calculates the pipeline quality value through the hazard source information and sets the pipeline level according to the pipeline quality value; S3. The management system collects internal environmental data of the pipeline through a sensor group, calculates the risk value of the pipeline according to the environmental data combined with the quality value, ranks the risk values ​​to obtain a pipeline risk ranking, and obtains a pipeline hazard level according to the pipeline risk ranking combined with the pipeline level; S4. Compare the pipeline hazard level with the pipeline risk ranking, set the hazard source level according to the comparison result, and the management system performs graded warning and targeted processing on the terminal according to the hazard source level.

2. According to claim 1, a method for managing dangerous sources in limited space of underground pipelines is characterized by: The S1 includes: S101, collecting underground pipeline structure information through a first sensor group, and constructing a three-dimensional pipeline model according to the underground pipeline structure information; S102, obtaining pipeline model information according to the three-dimensional pipeline model, extracting pipeline internal hazard source information according to the pipeline model information, and constructing a hazard source information database according to the hazard source information.

3. According to claim 1, a method for managing dangerous sources in limited space of underground pipelines is characterized by: The S2 includes: S201, marking the hazard source information database according to the pipeline information, so that each pipeline has corresponding hazard source information in the hazard source information database; S202, calculating the pipeline quality value through the hazard source information; The pipeline quality value calculation formula is: Wherein, Z is the pipeline quality value calculated according to the hazard source information, x1 is the total number of high-voltage electrical equipment in the pipeline, x2 is the number of high-voltage electrical equipment working in the pipeline at the current time, x3 is the average of the vertical distances between all high-voltage electrical equipment in the pipeline and the nearest pipeline wall, y1 is the total number of harmful gas types in the hazard source information database, y2 is the number of harmful gas types existing in the pipeline at the current time, y3 is the average of the vertical distances between all harmful gas sensors in the pipeline and the nearest pipeline wall, v1 is the total number of equipment in the equipment hazard source inside the pipeline, v2 is the number of equipment in the equipment hazard source working in the pipeline at the current time, v3 is the average of the vertical distances between all equipment hazard sources in the pipeline and the nearest pipeline wall, and G is the total distance from the starting point to the end point of the pipeline; The pipeline level is set for the pipeline according to the pipeline quality value. When the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, the pipeline is set as a second-level pipeline. When the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality value, the pipeline is set as a first-level pipeline.

4. According to claim 3, a method for managing dangerous sources in limited space of underground pipelines is characterized in that: The S3 includes: S301, collecting internal environmental information of the pipeline through a second sensor group, the environmental information including temperature, humidity, concentration of harmful gases and oxygen content in the pipeline; preprocessing the environmental information to obtain environmental data; S302, calculating the risk value of the underground pipeline by combining the environmental data with the pipeline quality value; The calculation formula of the risk value of the underground pipeline is: Among them, F is the risk value of the underground pipeline, T1 is the real-time temperature in the pipeline, T2 is the historical average temperature in the pipeline, S1 is the real-time humidity in the pipeline, S2 is the historical average humidity in the pipeline, H1 is the number of harmful gas types in the pipeline, H2 is the total number of harmful gas types in the hazard source information database, O1 is the real-time oxygen concentration in the pipeline, O2 is the historical oxygen concentration in the pipeline, W1 and W2 are weight parameters; the value range of F is 0 <F<1; S303, rank the risk value of each pipeline from small to large to obtain a pipeline risk ranking, and multiply the risk ranking of each pipeline by the pipeline level of the pipeline to obtain a pipeline hazard level.

5. According to claim 1, a method for managing dangerous sources in limited space of underground pipelines is characterized by: The S4 includes: S401, comparing the pipeline hazard level with the middle value of the pipeline risk ranking, when the pipeline hazard level is greater than 1.5 times of the middle value, setting the hazard source corresponding to the pipeline as a first-level hazard source, when the pipeline hazard level is less than or equal to 1.5 times of the middle value and greater than or equal to 0.5 times of the middle value, setting the hazard source corresponding to the pipeline as a second-level hazard source, when the pipeline hazard level is less than 0.5 of the middle value, setting the hazard source corresponding to the pipeline as a third-level hazard source; S402: The management system issues warnings to terminals according to the levels of the hazard sources and performs targeted processing on the hazard sources.

6. An underground pipeline limited space hazard source management system, characterized in that: The system comprises: The hazard source information acquisition module is used to enable the management system to acquire underground pipeline structure information through the sensor group, build a three-dimensional pipeline model, and acquire hazard source information based on the model to build a hazard source information database; A pipeline quality identification module is used to enable the management system to calculate the pipeline quality value through the hazard source information and set the pipeline level according to the pipeline quality value; A pipeline risk identification module is used to enable the management system to collect internal environment data of the pipeline through a sensor group, calculate the risk value of the pipeline according to the environment data combined with the quality value, rank the risk values ​​to obtain a pipeline risk ranking, and obtain a pipeline hazard level according to the pipeline risk ranking combined with the pipeline level; The graded warning module is used to compare the pipeline hazard level with the pipeline risk ranking, set the hazard source level according to the comparison result, and the management system performs graded warning and targeted processing on the terminal according to the hazard source level.

7. The underground pipeline limited space hazard source management system according to claim 6, characterized in that: The hazard source information acquisition module includes: A model building module, used to collect underground pipeline structure information through a first sensor group, and build a three-dimensional pipeline model according to the underground pipeline structure information; The information base building module is used to obtain pipeline model information based on the three-dimensional pipeline model, extract the internal hazard source information of the pipeline based on the pipeline model information, and build a hazard source information base based on the hazard source information.

8. The underground pipeline limited space hazard source management system according to claim 6, characterized in that: The pipeline quality determination module comprises: The marking module is used to mark the hazard source information library according to the pipeline information, so that each pipeline has the corresponding hazard source information in the hazard source information library; The quality calculation module is used to calculate the pipeline quality value through the hazard source information; The pipeline quality value calculation formula is: Wherein, Z is the pipeline quality value calculated according to the hazard source information, x1 is the total number of high-voltage electrical equipment in the pipeline, x2 is the number of high-voltage electrical equipment working in the pipeline at the current time, x3 is the average of the vertical distances between all high-voltage electrical equipment in the pipeline and the nearest pipeline wall, y1 is the total number of harmful gas types in the hazard source information database, y2 is the number of harmful gas types existing in the pipeline at the current time, y3 is the average of the vertical distances between all harmful gas sensors in the pipeline and the nearest pipeline wall, v1 is the total number of equipment in the equipment hazard source inside the pipeline, v2 is the number of equipment in the equipment hazard source working in the pipeline at the current time, v3 is the average of the vertical distances between all equipment hazard sources in the pipeline and the nearest pipeline wall, and G is the total distance from the starting point to the end point of the pipeline; The pipeline level is set for the pipeline according to the pipeline quality value. When the pipeline quality value is less than 1 / 2 of the historical pipeline quality average, the pipeline is set as a second-level pipeline. When the pipeline quality value is greater than or equal to 1 / 2 of the historical pipeline quality value, the pipeline is set as a first-level pipeline.

9. The underground pipeline limited space hazard source management system according to claim 8, characterized in that: The pipeline risk identification module includes: An environmental information acquisition module is used to collect the internal environmental information of the pipeline through the second sensor group, wherein the environmental information includes the temperature, humidity, concentration of harmful gases and oxygen content in the pipeline; and pre-process the environmental information to obtain environmental data; A risk value calculation module, used to calculate the risk value of the underground pipeline by combining the environmental data with the pipeline quality value; The calculation formula of the risk value of the underground pipeline is: Among them, F is the risk value of the underground pipeline, T1 is the real-time temperature in the pipeline, T2 is the historical average temperature in the pipeline, S1 is the real-time humidity in the pipeline, S2 is the historical average humidity in the pipeline, H1 is the number of harmful gas types in the pipeline, H2 is the total number of harmful gas types in the hazard source information database, O1 is the real-time oxygen concentration in the pipeline, O2 is the historical oxygen concentration in the pipeline, W1 and W2 are weight parameters; the value range of F is 0 <F<1; The hazard level acquisition module is used to rank the risk value of each pipeline from small to large to obtain the pipeline risk ranking, and multiply the risk ranking of each pipeline by the pipeline level of the pipeline to obtain the pipeline hazard level.

10. The underground pipeline limited space hazard source management system according to claim 6, characterized in that: The hierarchical warning module includes: A comparison module is used to compare the pipeline hazard level with the middle value of the pipeline risk ranking, and when the pipeline hazard level is greater than 1.5 times of the middle value, the hazard source corresponding to the pipeline is set as a first-level hazard source; when the pipeline hazard level is less than or equal to 1.5 times of the middle value and greater than or equal to 0.5 times of the middle value, the hazard source corresponding to the pipeline is set as a second-level hazard source; when the pipeline hazard level is less than 0.5 of the middle value, the hazard source corresponding to the pipeline is set as a third-level hazard source; The early warning module is used to enable the management system to issue early warnings to terminals according to the level of the danger source and to carry out targeted processing on the danger source.

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