Method, system and device for drawing a safety control line for land planning around a chemical industrial park

Abstract

The application relates to a chemical industrial park surrounding land planning safety control line demarcation method, system and equipment, a high-precision three-dimensional CFD model containing a building and a structure of a chemical industrial park, a protective facility of the chemical industrial park and a surrounding landform of the chemical industrial park is constructed; in the high-precision three-dimensional CFD model, an accident scene dynamic driving engine is used to simulate the evolution process of multiple disaster scenes under different meteorological conditions and different protective measures, and safety distance threshold values corresponding to the disaster scenes are obtained; the safety distance threshold values of the multiple disaster scenes are integrated to establish a spatial superposition model in a unified coordinate system; according to the dynamic updating condition of the safety distance threshold values, the spatial superposition model is updated, the range of the safety control line of the chemical industrial park surrounding land planning is determined according to the updated spatial superposition model, and the safety and rationality of the safety control line demarcation are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical industry park safety management, in particular to a chemical industry park surrounding land planning safety control line demarcation method, system and equipment. BACKGROUND

[0002] As an area where chemical enterprises are concentrated, a chemical industry park has potential risks of fire, explosion, toxic gas leakage and other disasters. Once these disasters occur, they may pose a serious threat to the safety of personnel, property and the environment in the surrounding area. Currently, the demarcation of the safety control line of the surrounding land planning of the chemical industry park is mainly based on traditional safety distance standards and empirical values. However, as the chemical industry park changes and time passes, the traditional safety control line has deviated from the actual situation, resulting in irrationality in the demarcation of the safety control line and difficulty in effectively protecting the safety of the surrounding area. SUMMARY

[0003] Therefore, it is necessary to provide a chemical industry park surrounding land planning safety control line demarcation method, system and equipment that can improve safety and rationality in view of the above technical problems.

[0004] In a first aspect, the present application provides a chemical industry park surrounding land planning safety control line demarcation method, comprising:

[0005] constructing a high-precision three-dimensional CFD model containing the built structures of the chemical industry park, the protective facilities of the chemical industry park and the topography around the chemical industry park;

[0006] In the high-precision three-dimensional CFD model, a dynamic driving engine for accident scenarios is used to simulate the evolution process of multiple disaster scenarios under different meteorological conditions and different protective measures, and to obtain safety distance thresholds corresponding to each disaster scenario;

[0007] integrate the safety distance thresholds of multiple disaster scenarios to establish a spatial superposition model in a unified coordinate system;

[0008] According to the dynamic update of the safety distance threshold, the spatial superposition model is updated, and according to the updated spatial superposition model, the range of the safety control line of the surrounding land planning of the chemical industry park is determined.

[0009] In one embodiment, constructing a high-precision three-dimensional CFD model containing the built structures of the chemical industry park, the protective facilities of the chemical industry park and the topography around the chemical industry park comprises:

[0010] Collecting topographic data of the chemical industry park and its surrounding area, and importing the topographic data into the high-precision three-dimensional CFD model;

[0011] drawing a model of the building structure, and importing the obtained building structure model into the high-precision three-dimensional CFD model;

[0012] parameterizing modeling of the protective measures, and importing the obtained protective measure model into the high-precision three-dimensional CFD model.

[0013] In one of the embodiments, the plurality of disaster scenarios includes at least one of the following: a toxic gas diffusion scenario, a fire thermal radiation scenario, and an explosion shock wave scenario.

[0014] In one of the embodiments, in the high-precision three-dimensional CFD model, the evolution processes of the plurality of disaster scenarios under different meteorological conditions and different protective measures are simulated by using an accident scenario dynamic driving engine, and a safety distance threshold corresponding to each of the disaster scenarios is obtained, including:

[0015] For the toxic gas diffusion scenario, a leakage source position, a leakage rate, a toxic gas type, and physical and chemical properties thereof are set, the accident scenario dynamic driving engine is started, the diffusion process of the toxic gas under different meteorological conditions and different protective measures is simulated, a two-dimensional toxic concentration threshold boundary is recorded, and a first safety distance threshold is obtained.

[0016] For the fire thermal radiation scenario, a fire starting position, a scale, a burning material type, and environmental thermal conduction, convection, and radiation characteristics are set, the accident scenario dynamic driving engine is started, the thermal radiation process of the fire under different meteorological conditions and different protective measures is simulated, a thermal radiation threshold boundary at different time instants is recorded, and a second safety distance threshold is obtained.

[0017] For the explosion shock wave scenario, an explosion source position and an explosion equivalent are set, the accident scenario dynamic driving engine is started, the propagation process of the explosion shock wave under different meteorological conditions and different protective measures is simulated, overpressure values at different distances are calculated, an overpressure threshold boundary is extracted according to the overpressure values, and a third safety distance threshold is obtained.

[0018] In one of the embodiments, the safety distance thresholds of the plurality of disaster scenarios are integrated, and a spatial superposition model in a unified coordinate system is established, including:

[0019] The plurality of safety distance thresholds are uniformly projected into the same coordinate system to obtain the spatial superposition model; or,

[0020] The personal risk contour and the standard fireproof spacing are obtained, and the personal risk contour, the standard fireproof spacing, and the plurality of safety distance thresholds are uniformly projected into the same coordinate system to obtain the spatial superposition model.

[0021] In one of the embodiments, the spatial superposition model is updated according to dynamic updating of the safety distance thresholds, including:

[0022] According to the management information system interface of the chemical industrial park, management information of the chemical industrial park is acquired in real time;

[0023] According to the management information, the high-precision three-dimensional CFD model is dynamically updated, and according to the updated high-precision three-dimensional CFD model, dynamic updating of the safety distance threshold is triggered;

[0024] According to the dynamic updating of the safety distance threshold, the spatial superposition model is updated.

[0025] In one embodiment, after the spatial superposition model is updated according to the dynamic updating of the safety distance threshold, the method further comprises:

[0026] In combination with the updated spatial superposition model and the limit state of each disaster scenario, the range of the safety control line of the land planning around the chemical industrial park is determined.

[0027] In a second aspect, the present application provides a safety control line drawing system for land planning around a chemical industrial park, comprising:

[0028] A model construction module is configured to construct a high-precision three-dimensional CFD model containing built structures of a chemical industrial park, protective facilities of the chemical industrial park, and topography around the chemical industrial park;

[0029] A disaster deduction module is configured to simulate, in the high-precision three-dimensional CFD model, evolution processes of multiple disaster scenarios under different meteorological conditions and different protective measures by using an accident scenario dynamic driving engine, to obtain safety distance thresholds corresponding to each disaster scenario;

[0030] A data fusion module is configured to integrate the safety distance thresholds of multiple disaster scenarios, and to establish a spatial superposition model in a unified coordinate system;

[0031] An optimization drawing module is configured to update the spatial superposition model according to dynamic updating of the safety distance threshold, and to determine the range of the safety control line of the land planning around the chemical industrial park according to the updated spatial superposition model.

[0032] In a third aspect, the present application provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method of the first aspect when executing the computer program.

[0033] In a fourth aspect, the present application provides a computer readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the steps of the method of the first aspect.

[0034] The chemical industry park surrounding land planning safety control line demarcation method, system and device, through coupling multiple disaster scenarios, combining different meteorological conditions and different protection measures to perform CFD dynamic deduction on each disaster scenario, realizes accurate quantification of disaster influence range, further, through integration of multi-source safety distance and dynamic evolution, triggers automatic iteration update of the safety control line, comprehensively considers the influence of space-time factors on the safety control line demarcation, and finally improves the safety and rationality of the chemical industry park surrounding land planning. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A hardware structure block diagram of a terminal of the chemical industry park surrounding land planning safety control line demarcation method in an embodiment;

[0036] Figure 2 A flowchart of the chemical industry park surrounding land planning safety control line demarcation method in an embodiment;

[0037] Figure 3-1 A schematic diagram of a high-precision three-dimensional CFD model in an embodiment Figure 1 ;

[0038] Figure 3-2 A schematic diagram of a high-precision three-dimensional CFD model in an embodiment Figure 2 ;

[0039] Figure 4-1 An influence range of toxic gas diffusion at different times obtained by CFD dynamic deduction in an embodiment Figure 1 ;

[0040] Figure 4-2 An influence range of toxic gas diffusion at different times obtained by CFD dynamic deduction in an embodiment Figure 2 ;

[0041] Figure 5 A flowchart of the chemical industry park surrounding land planning safety control line demarcation method in another embodiment;

[0042] Figure 6 A structure block diagram of the chemical industry park surrounding land planning safety control line drawing system in an embodiment;

[0043] Figure 7 An internal structure diagram of the computer device in an embodiment. DETAILED DESCRIPTION

[0044] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0045] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as those commonly understood by a person of ordinary skill in the art to which the present application belongs. The terms "one", "a", "an", "the", "these", and similar terms in the present application do not indicate quantity, and they can be singular or plural. The terms "include", "contain", "have", and any variants thereof in the present application are intended to cover non-exclusive inclusion; for example, a process, method, and system, product or device containing a series of steps or modules (units) are not limited to the listed steps or modules (units), but can include steps or modules (units) not listed, or can include other steps or modules (units) inherent to the process, method, product or device. The terms "connect", "connect", "couple" and the like in the present application are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. The term "multiple" in the present application refers to two or more. The term "and / or" describes the association between the associated objects, which means that there can be three relationships, for example, "A and / or B" can mean that A exists alone, A and B exist together, and B exists alone. Generally, the character " / " represents the relationship between the objects before and after it as "or". The terms "first", "second", "third" and the like in the present application are only used to distinguish similar objects, and do not represent a specific order of the objects.

[0046] The method embodiments provided in the present embodiment can be executed in a terminal, a computer or a similar computing device. For example, the method embodiments are executed on a terminal, Figure 1 is a hardware structure block diagram of a terminal of a chemical industry park surrounding land planning safety control line demarcation method according to an embodiment of the present application. As shown in Figure 1 , the terminal can include one or more (only one is shown in Figure 1 ) processor 101 and memory 102 for storing data, wherein the processor 101 can include but not limited to processing device such as microprocessor MCU or programmable logic device FPGA. The above terminal can also include transmission device 103 for communication function and input and output device 104. Those skilled in the art can understand that Figure 1 The structure shown is only schematic, which does not limit the structure of the above terminal. For example, the terminal can include more or less components than those shown in Figure 1 , or have a different configuration from that shown in Figure 1 .

[0047] The memory 102 can be used to store computer programs, such as software programs of application software and modules, for example, the computer program corresponding to the chemical industry park surrounding land planning safety control line demarcation method in the embodiment. The processor 101 executes various functional applications and data processing by running the computer program stored in the memory 102, that is, implements the method described above. The memory 102 can include a high-speed random access memory, and can also include a non-volatile memory, such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some examples, the memory 102 can further include a memory remotely arranged with respect to the processor 101, which can be connected to the terminal through a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0048] The transmission device 103 is used to receive or send data via a network. The above-mentioned network includes a wireless network provided by a communication provider of the terminal. In one example, the transmission device 103 includes a network adapter (Network Interface Controller, NIC) which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 103 can be a radio frequency (Radio Frequency, RF) module which is used to communicate with the Internet in a wireless manner.

[0049] In one embodiment, as shown in Figure 2 , a chemical industry park surrounding land planning safety control line demarcation method is provided. Taking the terminal in Figure 1 as an example, the method includes the following steps:

[0050] Step S101, a high-precision three-dimensional CFD model containing the built structures of the chemical industry park, the protective facilities of the chemical industry park, and the topography around the chemical industry park is constructed.

[0051] The high-precision three-dimensional CFD model is a computational fluid dynamics simulation tool that uses fine grids and advanced numerical methods to accurately simulate complex physical phenomena such as fluid flow, heat and mass transfer in three-dimensional space. Figure 3-1 Fig. 1 is a schematic diagram of the high-precision three-dimensional CFD model in the embodiment, Figure 1 , Figure 3-2 Fig. 2 is a schematic diagram of the high-precision three-dimensional CFD model in the embodiment, Figure 2 which shows the distribution of the topography, built structures and protective facilities in the chemical industry park. When constructing the high-precision three-dimensional CFD model, the following method can be used:

[0052] Collect the terrain data of the chemical industrial park and its surrounding areas, and import the terrain data into the high-precision three-dimensional CFD model. The terrain data includes information such as elevation and terrain undulation, which can be processed using geographic information system (GIS) technology and imported into the high-precision three-dimensional CFD model.

[0053] Draw a model of the building, and import the obtained building model into the high-precision three-dimensional CFD model. Among them, the parameters such as the position, shape and size of the building in the chemical industrial park can be measured first, and then the building model can be drawn in the spatial modeling software according to these parameters, and finally it is imported into the high-precision three-dimensional CFD model, ensuring that the high-precision three-dimensional CFD model can accurately reflect the actual spatial layout of the building.

[0054] Parameterize the model of the protective measures, and import the obtained protective measure model into the high-precision three-dimensional CFD model. Among them, the protective measures include spraying, isolation wall, etc., and the parameters of the protective measures include spraying flow, coverage, isolation wall height and material, etc. In the high-precision three-dimensional CFD model, by setting and simulating the parameters of different protective measures, the inhibitory effect of protective measures on disaster development under different disaster scenarios is quantified, so as to realize the accurate simulation of the effectiveness of protective measures.

[0055] Step S102, in the high-precision three-dimensional CFD model, use the accident scene dynamic driving engine to simulate the evolution process of multiple disaster scenarios under different meteorological conditions and different protective measures, and obtain the safety distance threshold corresponding to each disaster scenario.

[0056] Among them, the accident scene dynamic driving engine is an automatic simulation control and parameterized scene execution engine for disaster risk assessment, which can drive the change of parameters corresponding to disasters, meteorological conditions and protective measures (such as leakage rate, wind speed and direction, ignition time, protective wall height), call high-precision three-dimensional CFD model for disaster evolution simulation, automatically record the mapping relationship between different parameters (input) and safety distance threshold (output), and form a database of safety distance corresponding to different disaster scenarios. Adjusting the related parameters in the accident scene dynamic driving engine will automatically trigger CFD simulation update and feedback new safety distance.

[0057] Among them, the multiple disaster scenarios include at least one of the following: toxic gas diffusion scenario, fire heat radiation scenario, explosion shock wave scenario. Meteorological conditions include wind speed, wind direction, temperature, humidity, etc. Protective measures include spraying, isolation wall, etc.

[0058] For the toxic gas diffusion scenario, set the leakage source position, leakage rate, toxic gas type and its physical and chemical properties, start the accident scenario dynamic driving engine, simulate the diffusion process of toxic gas under different meteorological conditions and different protection measures, record the two-dimensional toxic concentration threshold boundary, and obtain the first safety distance threshold. Figure 4-1 The influence range of toxic gas diffusion at different times obtained by CFD dynamic deduction in this embodiment Figure 1 , wherein the upper legend is temperature (unit: K), which changes from dark to light from bottom to top, indicating that the temperature changes from low to high, which are 500K, 740K, 880K, 1020K, 1160K, 1300K, 1440K, 1580K, 1720K, 1860K, 2000K respectively. The lower legend is the maximum overpressure (unit: kPa), which changes from blue to red from bottom to top, indicating that the pressure changes from low to high, which are 6.9kPa, 14kPa, 18kPa, 22kPa, 26kPa, 30kPa, 34kPa, 38kPa, 42kPa, 46kPa, 50.0kPa respectively. Figure 4-2 The influence range of toxic gas diffusion at different times obtained by CFD dynamic deduction in this embodiment Figure 2 .

[0059] For the fire thermal radiation scenario, set the fire starting position, scale, burning material type, and set the environmental thermal conduction, convection and radiation characteristics, start the accident scenario dynamic driving engine, simulate the thermal radiation process of the fire under different meteorological conditions and different protection measures, record the thermal radiation threshold boundary at different times, and obtain the second safety distance threshold;

[0060] For the explosion shock wave scenario, set the explosion source position and explosion equivalent, start the accident scenario dynamic driving engine, simulate the propagation process of the explosion shock wave under different meteorological conditions and different protection measures, calculate the overpressure value at different distances, and extract the overpressure threshold boundary according to the overpressure value, to obtain the third safety distance threshold.

[0061] Step S103, integrate the safety distance thresholds of multiple disaster scenarios, and establish a spatial superposition model in a unified coordinate system.

[0062] Project multiple safety distance thresholds into the same coordinate system, and obtain a spatial superposition model through spatial superposition analysis.

[0063] Step S104, update the spatial superposition model according to the dynamic update of the safety distance threshold, and determine the range of the safety control line of the land planning around the chemical industry park according to the updated spatial superposition model.

[0064] An interface is established for connecting with a chemical industrial park management information system, and management information of the chemical industrial park, such as construction project update, process change, and protection technology upgrade, is obtained in real time according to the interface; when a dynamic change occurs in the chemical industrial park, a high-precision three-dimensional CFD model is dynamically updated according to the management information, and dynamic updating of a safety distance threshold is triggered according to the updated high-precision three-dimensional CFD model; and the spatial superposition model is updated according to the dynamic updating of the safety distance threshold, and finally the automatic iterative updating of the safety control line is realized.

[0065] The traditional safety control line setting method fails to fully consider the complex influencing factors under different disaster scenarios and the dynamic changes such as construction project update, process change, and protection technology upgrade in the park, so that the traditional method cannot accurately quantify the influence range of disasters, resulting in irrationality in setting the safety control line and difficulty in effectively protecting the safety of the surrounding area. In the above steps S101 to S104, by coupling multiple disaster scenarios, CFD dynamic deduction is performed on each disaster scenario in combination with different meteorological conditions and different protection measures, the influence range of disasters is accurately quantified, further, the automatic iterative updating of the safety control line is triggered by integrating the dynamic evolution of multiple source safety distances, the influence of space-time factors on the setting of the safety control line is comprehensively considered, and finally the safety and rationality of the land planning around the chemical industrial park are improved.

[0066] In some embodiments, in step S103, the safety distance threshold of the integrated multiple disaster scenarios is used to establish a spatial superposition model in a unified coordinate system, which can be realized by the following method: obtaining a personal risk contour line and a standard fireproof spacing, and projecting the personal risk contour line, the standard fireproof spacing, and the multiple safety distance thresholds into the same coordinate system to obtain the spatial superposition model.

[0067] The personal risk contour line can be obtained by evaluating the personal exposure risk under different disaster scenarios. The standard fireproof spacing can be determined according to relevant standards and industry specifications. This embodiment considers the personal risk contour line, the standard fireproof spacing, and the multiple safety distance thresholds, so that the spatial superposition model is more accurate.

[0068] In some embodiments, after the spatial superposition model is updated according to the dynamic updating of the safety distance threshold in step S104, the method further includes: determining the range of the safety control line of the land planning around the chemical industrial park in combination with the updated spatial superposition model and the limit state of each disaster scenario.

[0069] The limit state of each disaster scenario can be understood as the most unfavorable scenario, such as the largest scale fire, the most serious toxic gas leakage, the largest equivalent explosion, etc. The limit state of each disaster scenario is combined with the real-time updated spatial superposition model, and the optimal position of the safety control line is calculated and determined through an optimization algorithm (such as genetic algorithm, linear programming, Pareto optimal solution), and dynamic drawing is performed by using drawing software.

[0070] The traditional safety control line (such as fixed fireproof distance) is often set based on the most unfavorable single scenario, which is conservative or not fully covered. The present embodiment fuses the limit states of multiple disasters (such as explosion overpressure threshold, lethal concentration of thermal radiation, IDLH (immediately life-threatening or health concentration) exposure limit) and the real-time updated spatial superposition model, and automatically searches for the minimum enclosing boundary that meets all safety constraints by using an optimization algorithm, thereby generating a dynamically adjustable, scientific and accurate safety control line.

[0071] It should be understood that although each step in the flowchart involved in each embodiment as described above is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other orders. Moreover, at least part of the steps in the flowchart involved in each embodiment as described above can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0072] In one embodiment, Figure 5 Another method for planning a safety control line for land surrounding a chemical industrial park is provided, which includes the following steps:

[0073] Step S201, collect topographic data of the chemical industrial park and its surrounding area, and import the topographic data into a high-precision three-dimensional CFD model.

[0074] Step S202, draw a model of the building structure, and import the obtained building structure model into the high-precision three-dimensional CFD model.

[0075] Step S203, parameterize modeling of the protective measures, and import the obtained protective measure model into the high-precision three-dimensional CFD model.

[0076] Step S204, a first safety distance threshold is obtained by simulating a toxic gas diffusion scenario using the accident scenario dynamic driving engine. Specifically, for the toxic gas diffusion scenario, the leakage source position, leakage rate, toxic gas type and its physical and chemical properties are set, the accident scenario dynamic driving engine is started, the diffusion process of toxic gas under different meteorological conditions and different protection measures is simulated, the two-dimensional toxicity concentration threshold boundary is recorded, and the first safety distance threshold is obtained.

[0077] Step S205, a second safety distance threshold is obtained by simulating a fire heat radiation scenario using the accident scenario dynamic driving engine. Specifically, for the fire heat radiation scenario, the fire starting position, scale, burning material type, and environmental heat conduction, convection and radiation characteristics are set, the accident scenario dynamic driving engine is started, the heat radiation process of the fire under different meteorological conditions and different protection measures is simulated, the heat radiation threshold boundary at different times is recorded, and the second safety distance threshold is obtained.

[0078] Step S206, a third safety distance threshold is obtained by simulating an explosion shock wave scenario using the accident scenario dynamic driving engine. Specifically, for the explosion shock wave scenario, the explosion source position and explosion equivalent are set, the accident scenario dynamic driving engine is started, the propagation process of the explosion shock wave under different meteorological conditions and different protection measures is simulated, the overpressure value at different distances is calculated, the overpressure threshold boundary is extracted according to the overpressure value, and the third safety distance threshold is obtained.

[0079] Step S207, the personal risk contour and the standard fire protection distance are obtained, and the personal risk contour, the standard fire protection distance and the multiple safety distance thresholds are projected into the same coordinate system to obtain a spatial superposition model.

[0080] Step S208, real-time management information of the chemical industry park is obtained according to the management information system interface of the chemical industry park.

[0081] Step S209, the high-precision three-dimensional CFD model is dynamically updated according to the management information, and the safety distance threshold is dynamically updated according to the updated high-precision three-dimensional CFD model.

[0082] Step S210, the spatial superposition model is updated according to the dynamic updating of the safety distance threshold.

[0083] Step S211, the range of the safety control line of the land planning around the chemical industry park is determined in combination with the updated spatial superposition model and the limit state of each disaster scenario.

[0084] In one embodiment, Figure 6 A chemical industry park surrounding land planning safety control line drawing system is provided, comprising:

[0085] The model construction module 100 constructs a high-precision three-dimensional CFD model containing the built structures of the chemical industrial park, the protective facilities of the chemical industrial park, and the terrain around the chemical industrial park.

[0086] The disaster deduction module 200 is configured to simulate the evolution process of a plurality of disaster scenarios under different meteorological conditions and different protective measures in the high-precision three-dimensional CFD model by using an accident scene dynamic driving engine, and obtain a safety distance threshold corresponding to each disaster scenario.

[0087] The data fusion module 300 is configured to integrate the safety distance thresholds of the plurality of disaster scenarios, and establish a spatial superposition model in a unified coordinate system.

[0088] The optimization drawing module 400 is configured to update the spatial superposition model according to the dynamic update of the safety distance threshold, and determine the range of the safety control line of the land planning around the chemical industrial park according to the updated spatial superposition model.

[0089] In some embodiments, the model construction module 100 includes a terrain data importing unit, a built structure modeling unit, and a protective facility modeling unit. The terrain data importing unit is configured to collect terrain data of the chemical industrial park and the surrounding area, and import the terrain data into the high-precision three-dimensional CFD model. The built structure modeling unit is configured to draw a model of the built structure, and import the obtained built structure model into the high-precision three-dimensional CFD model. The protective facility modeling unit is configured to parameterize the protective measures, and import the obtained protective measure model into the high-precision three-dimensional CFD model.

[0090] In some embodiments, the disaster deduction module 200 includes a toxic gas diffusion simulation unit, a fire thermal radiation simulation unit, and an explosion shock wave simulation unit. The toxic gas diffusion simulation unit is configured to set the leakage source position, the leakage rate, the toxic gas type, and the physical and chemical properties thereof for a toxic gas diffusion scenario, start the accident scene dynamic driving engine, simulate the diffusion process of the toxic gas under different meteorological conditions and different protective measures, record the two-dimensional toxic concentration threshold boundary, and obtain a first safety distance threshold. The fire thermal radiation simulation unit is configured to set the fire starting position, the scale, and the burning material type for a fire thermal radiation scenario, set the environmental heat conduction, convection, and radiation characteristics, start the accident scene dynamic driving engine, simulate the thermal radiation process of the fire under different meteorological conditions and different protective measures, record the thermal radiation threshold boundary at different times, and obtain a second safety distance threshold. The explosion shock wave simulation unit is configured to set the explosion source position and the explosion equivalent for an explosion shock wave scenario, start the accident scene dynamic driving engine, simulate the propagation process of the explosion shock wave under different meteorological conditions and different protective measures, calculate the overpressure value at different distances, extract the overpressure threshold boundary according to the overpressure value, and obtain a third safety distance threshold.

[0091] In some embodiments, the data fusion module 300 comprises a data collection unit and a superimposed modeling unit; the data collection unit is configured to collect a plurality of safety distance thresholds; the superimposed modeling unit is configured to project the plurality of safety distance thresholds into the same coordinate system to obtain a spatial superimposed model. Alternatively, the data collection unit is configured to collect personal risk contour lines, standard fire protection spacing and a plurality of safety distance thresholds; the superimposed modeling unit is configured to project the personal risk contour lines, the standard fire protection spacing and the plurality of safety distance thresholds into the same coordinate system to obtain a spatial superimposed model.

[0092] In some embodiments, the optimization drawing module 400 comprises an iterative updating unit and a dynamic drawing unit; the iterative updating unit is configured to obtain management information of the chemical industry park in real time according to a management information system interface of the chemical industry park; update the high-precision three-dimensional CFD model dynamically according to the management information, and trigger dynamic update of the safety distance threshold according to the updated high-precision three-dimensional CFD model. The dynamic drawing unit is configured to update the spatial superimposed model according to the dynamic update of the safety distance threshold; draw the safety control line of the land planning around the chemical industry park according to the updated spatial superimposed model.

[0093] It should be noted that each of the above modules can be a functional module or a program module, which can be implemented by software or hardware. For the modules implemented by hardware, each of the above modules can be located in the same processor; or each of the above modules can also be located in different processors in any combination.

[0094] In one embodiment, a computer device is provided, which can be a terminal, and its internal structure diagram can be as shown in Figure 7 The computer device comprises a processor, a memory, a communication interface, a display screen and an input device connected by a system bus. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The communication interface of the computer device is configured to communicate with external terminals in a wired or wireless manner. The wireless manner can be achieved by WIFI, mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by the processor to implement a method for drawing a safety control line of land planning around a chemical industry park. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the shell of the computer device. It can also be an external keyboard, touchpad or mouse, etc.

[0095] Those skilled in the art can understand, Figure 7 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0096] In addition, in combination with the chemical industry park surrounding land planning safety control line demarcation method provided in the above-mentioned embodiments, a storage medium can also be provided in the present embodiment to realize. The storage medium has a computer program stored thereon; the computer program is executed by a processor to realize any one of the chemical industry park surrounding land planning safety control line demarcation methods in the above-mentioned embodiments.

[0097] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties.

[0098] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0099] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the present application.

[0100] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method for delineating land planning safety control lines around a chemical industrial park, characterized in that, include: Construct a high-precision 3D CFD model that includes the buildings and structures in the chemical industrial park, the protective facilities of the chemical industrial park, and the surrounding terrain of the chemical industrial park; In the high-precision three-dimensional CFD model, the accident scene dynamic driving engine is used to simulate the evolution process of various disaster scenarios under different meteorological conditions and different protective measures, and obtain the safe distance threshold corresponding to each disaster scenario. By integrating the safety distance thresholds for multiple disaster scenarios, a spatial overlay model under a unified coordinate system is established; Based on the dynamic updates of the safety distance threshold, the spatial overlay model is updated, and based on the updated spatial overlay model, the scope of the safety control line for the land planning around the chemical industrial park is determined. The various disaster scenarios include at least one of the following: toxic gas diffusion scenario, fire thermal radiation scenario, and explosion shock wave scenario; in the high-precision three-dimensional CFD model, the evolution process of various disaster scenarios under different meteorological conditions and different protective measures is simulated using an accident scenario dynamic driving engine to obtain the safe distance thresholds corresponding to each of the disaster scenarios, including: For the toxic gas diffusion scenario, the location of the leak source, the leak rate, the type of toxic gas and its physicochemical properties are set, the dynamic driving engine of the accident scenario is started, the diffusion process of toxic gas under different meteorological conditions and different protective measures is simulated, the two-dimensional toxicity concentration threshold boundary is recorded, and the first safe distance threshold is obtained. For the fire thermal radiation scenario, the fire initiation location, scale, and type of burning material are set, as well as the environmental heat conduction, convection, and radiation characteristics are set. The dynamic driving engine of the accident scenario is started to simulate the thermal radiation process of the fire under different meteorological conditions and different protective measures. The thermal radiation threshold boundary at different times is recorded to obtain the second safe distance threshold. For the aforementioned explosion shock wave scenario, the location of the explosion source and the explosion yield are set, the dynamic drive engine of the accident scenario is activated, the propagation process of the explosion shock wave under different meteorological conditions and different protective measures is simulated, the overpressure value at different distances is calculated, and the overpressure threshold boundary is extracted based on the overpressure value to obtain the third safe distance threshold.

2. The method for delineating the safety control line for land planning around a chemical industrial park according to claim 1, characterized in that, Construct a high-precision 3D CFD model that includes the buildings and structures of the chemical industrial park, its protective facilities, and the surrounding terrain. Collect topographic data of the chemical industrial park and its surrounding areas, and import the topographic data into the high-precision three-dimensional CFD model; Draw a model of the building or structure, and import the obtained building or structure model into the high-precision three-dimensional CFD model; The protective measures are parametrically modeled, and the resulting protective measure model is imported into the high-precision three-dimensional CFD model.

3. The method for delineating the safety control line for land planning around a chemical industrial park according to claim 1, characterized in that, Integrating the safety distance thresholds for multiple disaster scenarios, a spatial overlay model under a unified coordinate system is established, including: By uniformly projecting the various safety distance thresholds onto the same coordinate system, the spatial overlay model is obtained; or... Obtain personal risk contour lines and standard fire separation distances, and project the personal risk contour lines, the standard fire separation distances, and various safety distance thresholds onto the same coordinate system to obtain the spatial overlay model.

4. The method for delineating the safety control line for land planning around a chemical industrial park according to claim 1, characterized in that, The spatial overlay model is updated based on the dynamic updates of the safety distance threshold, including: According to the management information system interface of the chemical industrial park, the management information of the chemical industrial park is obtained in real time; The high-precision 3D CFD model is dynamically updated based on the management information, and the safety distance threshold is dynamically updated based on the updated high-precision 3D CFD model. The spatial overlay model is updated based on the dynamic updates of the safety distance threshold.

5. The method for delineating the safety control line for land planning around a chemical industrial park according to claim 1, characterized in that, After updating the spatial overlay model based on the dynamic updates of the safety distance threshold, the method further includes: By combining the updated spatial overlay model with the extreme states of each disaster scenario, the scope of the safety control line for land planning around the chemical industrial park is determined.

6. A system for drawing safety control lines for land planning around a chemical industrial park, characterized in that, include: The model building module constructs a high-precision 3D CFD model that includes the buildings and structures of the chemical industrial park, the protective facilities of the chemical industrial park, and the surrounding terrain of the chemical industrial park. The disaster simulation module is used in the high-precision three-dimensional CFD model to simulate the evolution of various disaster scenarios under different meteorological conditions and different protective measures using the accident scenario dynamic driving engine, and to obtain the safe distance threshold corresponding to each disaster scenario. The data fusion module is used to integrate the safety distance thresholds for multiple disaster scenarios and establish a spatial overlay model under a unified coordinate system; The optimized drawing module is used to update the spatial overlay model according to the dynamic update of the safety distance threshold, and to determine the scope of the safety control line of the land planning around the chemical industrial park based on the updated spatial overlay model. The various disaster scenarios include at least one of the following: toxic gas diffusion scenario, fire thermal radiation scenario, and explosion shock wave scenario; in the high-precision three-dimensional CFD model, the evolution process of various disaster scenarios under different meteorological conditions and different protective measures is simulated using an accident scenario dynamic driving engine to obtain the safe distance thresholds corresponding to each of the disaster scenarios, including: For the toxic gas diffusion scenario, the location of the leak source, the leak rate, the type of toxic gas and its physicochemical properties are set, the dynamic driving engine of the accident scenario is started, the diffusion process of toxic gas under different meteorological conditions and different protective measures is simulated, the two-dimensional toxicity concentration threshold boundary is recorded, and the first safe distance threshold is obtained. For the fire thermal radiation scenario, the fire initiation location, scale, and type of burning material are set, as well as the environmental heat conduction, convection, and radiation characteristics are set. The dynamic driving engine of the accident scenario is started to simulate the thermal radiation process of the fire under different meteorological conditions and different protective measures. The thermal radiation threshold boundary at different times is recorded to obtain the second safe distance threshold. For the aforementioned explosion shock wave scenario, the location of the explosion source and the explosion yield are set, the dynamic drive engine of the accident scenario is activated, the propagation process of the explosion shock wave under different meteorological conditions and different protective measures is simulated, the overpressure value at different distances is calculated, and the overpressure threshold boundary is extracted based on the overpressure value to obtain the third safe distance threshold.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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