71 results about "Chemical accident" patented technology

The invention relates to the technical field of chemical safety and emergency management, and discloses an emergency team informatization management system and method.The emergency team informatization management method comprises the steps that a multi-level Bayesian network model is constructed, and chemical accident evolution chain event node condition dependence is shown; establishing an uncertainty propagation analysis model, and quantifying an accident risk transmission rule; multi-dimensional node influence evaluation is carried out, and structural importance, propagation characteristics and intervention feasibility are comprehensively considered; constructing an intervention scheme by combining resource constraints according to an optimal intervention point identified by evaluation; through intelligent simulation evaluation, the intervention effect is optimized, and an emergency team iteration strategy is assisted; according to the method, systematic and dynamic analysis of complex chemical accidents is realized, key intervention nodes of'taking small as big 'can be found under the condition of limited resources, and the emergency disposal efficiency and the resource utilization rate are improved.

The invention provides a chemical ship cabin intelligent coating leakage positioning and early warning control method and system, and relates to the technical field of intelligent monitoring, and the method comprises the steps: collecting data through a multi-class sensor array, constructing a parameter distribution map, extracting features through a convolutional neural network, carrying out the time sequence analysis through a long and short term memory network, and carrying out the early warning. The variational auto-encoder constructs a leakage feature fingerprint database, collects data in real time, then carries out feature extraction and fusion processing, matches the data with the fingerprint database, determines a leakage position and a leakage rate, divides a monitoring area, and executes prevention and control. The leakage monitoring precision and the response speed can be improved, and the chemical accident risk is reduced.

The invention discloses a chemical gas phase risk detection system and method, and belongs to the technical field of gas detection. In order to solve the problems that the identification precision is not high, the risk grade division is not clear and the diffusion condition of chemicals cannot be accurately predicted, the chemical characteristics are comprehensively considered, the risk factor of each sampling point position is calculated, and the risk division can be accurately performed on each sampling point position according to the formulated risk grade division standard and threshold value, so that the risk classification accuracy is improved. A high-risk area can be quickly identified, the diffusion range and the influence degree of chemicals under different risk levels are simulated and predicted by combining environmental factors such as wind speed, wind direction, temperature and humidity in a sampling environment, a scientific basis is provided for formulating countermeasures, potential hazards of chemical accidents to personnel and the environment can be reduced, and the method is suitable for popularization and application. The initial early warning threshold value is dynamically adjusted according to the detection result, the risk assessment and the actual site situation, it is ensured that the early warning system can adapt to the complex and changeable chemical environment, and the early warning accuracy is improved.

The invention discloses a dangerous chemical accident analysis system and analysis method based on digital twinning. The method comprises the following steps: establishing a jet fire accident consequence model of a fire spread analysis unit; establishing a toxic gas leakage accident consequence model; establishing a pool fire accident consequence model; establishing a steam cloud explosion accident consequence model; setting coordinates, proportion and position attributes of the model in the process of importing the three-dimensional data of the chemical industry park; sensor real-time monitoring data are accessed through a data interface and serve as input parameters, and dynamic updating and visual effect display are achieved. Three-dimensional scene restoration under high resolution is realized through a digital twin technology, model influence parameters are interactively set in combination with a Web end interface, physical states and environmental factors of hazardous chemicals are monitored in real time, and dynamic simulation and analysis are performed through a digital twin model, so that early recognition and early warning of accident risks are realized. And the prevention and coping capability of dangerous chemical accidents is improved.

The utility model provides a wounded person back-delivery cabin, and relates to the technical field of accident scene back-delivery equipment. The heating layer achieves heating and heat preservation of the wounded person, the monitoring equipment, the first-aid equipment bag and the negative pressure equipment, so that the situation that the injury condition of the wounded person is aggravated due to severe cold is avoided, and meanwhile the monitoring equipment and the negative pressure equipment maintain normal operation in the field environment of the cold region. And the first-aid medicine and the first-aid equipment in the first-aid equipment bag play a normal first-aid role on the wounded. The hatch cover shields the supporting part, and protective coatings are arranged on the outer surface of the supporting part and the outer surface, away from the side of the supporting part, of the hatch cover at the same time, so that harmful substances in nuclear accidents and chemical accidents are prevented from entering the supporting part to aggravate the injury condition of the wounded. A monitoring device located in the first storage cabin, a first-aid device bag located in the second storage cabin and a negative pressure device located in the third storage cabin provide basic life support for the wounded personnel through the monitoring device located in the first storage cabin, the first-aid device bag located in the second storage cabin and the negative pressure device located in the third storage cabin. The protection piece prevents emergency personnel and the like from mistakenly touching an equipment button in the electricity storage cabin to change equipment parameters.

Great threats are caused to life and property safety of people by dangerous chemical leakage, explosion and other major events. At present, domestic and overseas scholars have less construction work for a knowledge graph of dangerous chemical accidents, so that the knowledge of the public on the dangerous chemicals is restricted, and the prevention of the dangerous chemical accidents is not facilitated. Based on natural language processing and deep learning technologies, the invention provides a dangerous chemical accident knowledge graph construction and application method based on multi-task learning. Dangerous chemical accident data at home and abroad are collected to construct a dangerous chemical accident ontology, and a deep learning algorithm is used for knowledge extraction; constructing a dangerous chemical accident knowledge graph and carrying out semantic annotation according to the chemical safety technical specification and the extracted knowledge; and carrying out key node analysis on accident causes, accident hazard sources and accident development by virtue of the dangerous chemical accident knowledge graph. According to the method, the elements in the dangerous chemical accident can be automatically extracted, evolution of the dangerous chemical accident knowledge graph is facilitated, and a foundation is laid for accident early warning in the future.

The invention discloses a multi-source data fusion-based dangerous chemical accident dynamic event map construction method, relates to the technical field of event map construction, and applies static mapping of a dangerous chemical event map to a time dimension to describe dynamic, sudden and timely characteristics of dangerous chemical accident occurrence. Based on a large number of accident investigation report texts, a Word2vec training word vector technology is applied, and through information extraction, knowledge fusion, ontology construction and dynamic reasoning of event knowledge, a dangerous chemical accident affair graph is systematically constructed. And a ResNet method is adopted in the knowledge fusion process, so that the equalization problem of a sample data set is solved. And general event generalization is carried out by combining causal relationship feature extraction of the hazardous chemical accidents, and a relatively complete hazardous chemical accident affair map is further constructed.

The invention relates to a dangerous chemical accident named entity identification method based on deep learning. The method comprises the following steps: firstly, acquiring dangerous chemical accident data, preprocessing the dangerous chemical accident data, and further constructing a dangerous chemical data set; based on the hazardous chemical substance data set, constructing a hazardous chemical substance electronic dictionary and a hazardous chemical substance entity corpus; on the basis, an ERNIE-BiGRU-Multi-HeadAttention-CRF deep network model is constructed, and named entity recognition is carried out on the accident description text; meanwhile, performing entity alignment on the accident description text according to a dangerous chemical entity corpus to obtain an identification result; and finally, a result obtained through deep learning model recognition and an entity corpus alignment result are fused to obtain a final entity recognition result. The dangerous chemical accident named entity recognition method has the advantages that the accuracy of dangerous chemical accident named entity recognition can be improved, researchers are helped to deeply analyze accident occurrence reasons and development laws to attract accident training, and reference is provided for follow-up handling and early warning work of dangerous chemical accidents.

The invention relates to the technical field of hazardous chemicals, in particular to a hazardous chemical accident site non-contact gas detection device and detection system, the device comprises a controller, an infrared spectrum analyzer, a differential spectrum analyzer and a control unit; the hazardous chemical substance gas is subjected to field detection and sample collection in a non-contact manner, so that detection result deviation caused by field gas diffusion due to non-timely detection can be effectively prevented; according to the invention, the diffused gas can be subjected to multi-angle omnibearing detection, so that the detection effect is ensured; in addition, the system also comprises an infrared spectrum imaging acquisition system and a differential spectrum detection system in the infrared spectrum analyzer and the differential spectrum analyzer, an Internet of Things technology intelligent analysis system, a command center equipped data processing module, a user terminal data sending module and a user mobile terminal. Infrared spectrum image data and differential spectrum data of collected gas and an evaluation result can be transmitted to a user mobile terminal in real time.

The invention relates to the technical field of hazardous chemical substance emergency robot control, in particular to a hazardous chemical substance accident site gas cylinder leakage automatic closing robot control system, which comprises an environmental data acquisition module, a physical equipment device, a multi-modal sensor data real-timely acquired by the environmental data acquisition module, and a timestamp synchronization algorithm for alignment; the state reconstruction module reconstructs a three-dimensional environment map through a deep convolutional neural network and a point cloud segmentation algorithm; the dynamic risk assessment module is integrated with a Bayesian reasoning network to predict the risk and output a dynamic risk field graph; the adaptive exploration decision module adopts a layered reinforcement learning framework and a risk constraint strategy to adjust exploration and utilization balance; the control output module converts the decision action sequence into a robot joint track; and the system coordination engine aggregates the output of each module through a federated learning framework for coordinated operation. The system realizes global adaptive decision through multi-module co-evolution, effectively balances exploration and utilization, and improves the reliability and efficiency of autonomous closing control.

The invention discloses a hazardous chemical accident emergency management cloud data platform based on a affair atlas, and relates to the field of hazardous chemical accident emergency management. According to the method, the accident investigation report database is analyzed based on a principal component analysis method, and the risk key influence factors of the dangerous chemical accident are determined; establishing a fuzzy interpretation structure model of the dangerous chemical accident risk influence factors; according to self-defined risk division grades, obtaining a risk grade evaluation result; building a Bayesian network model of dangerous chemical accident risks according to the fuzzy interpretation structure model, and evaluating accident risk influence factors to obtain an accident risk influence factor evaluation result; and performing early warning based on the risk level assessment result and the accident risk influence factor assessment result.

The invention provides a chemical accident emergency response method and system under real-time monitoring, and relates to the technical field of emergency response, and the method comprises the steps: carrying out the time alignment through collecting multi-source heterogeneous data in real time, and generating multi-source synchronous data; extracting multi-modal features of the multi-source synchronous data to carry out chemical accident identification; accident scene parameters are called, accident response analysis is carried out based on an accident identification result, an emergency response scheme is formulated, resource scheduling analysis is carried out, and a resource scheduling network diagram is constructed; and performing accident monitoring and early warning according to the resource scheduling network diagram in combination with the multi-source synchronous data, generating a real-time decision instruction, and pushing the real-time decision instruction and an emergency response scheme to an emergency command center. According to the method and the device, the technical problems of low chemical accident identification accuracy and response flow lag caused by lack of a multi-source heterogeneous data fusion and real-time linkage mechanism in the prior art are solved, and the technical effects of improving the chemical accident identification precision and the emergency response speed are achieved.

The invention discloses a bridge deck runoff treatment and hazardous chemical substance collection combined method for a highway. The method comprises the following steps: step 1, bridge deck runoff collection; 2, hazardous chemical substance collection; according to the invention, an existing monitoring camera on a road is completely adopted for information acquisition, only data reading, analysis and communication equipment is additionally arranged in a monitoring center, one-time investment is greatly saved, and adopted technical supporting hardware is common equipment of a road system, so that the operation and maintenance difficulty is small, the service life is long, and the operation and maintenance cost is low; according to the method, only a bridge deck runoff collecting pipeline is slightly adjusted, the problem that the treatment cost of the dangerous chemical accident liquid of a user is greatly increased due to the fact that the dangerous chemical accident liquid pollutes a large amount of rainwater in the rainy weather can be solved, and the operation and maintenance cost and the operation and maintenance difficulty are extremely low; the purification efficiency is high; meanwhile, the bridge deck initial runoff treatment technology is high in weather resistance and resistant to hydraulic impact.

The application provides a portable dangerous chemical accident harm prediction and early warning system, comprising: a multi-sensor data acquisition module, which acquires environmental information and video information of an accident scene in real time, including sensors arranged in the scene in advance and portable sensors connected with a portable prediction and early warning PAD; a rear judgment platform, which receives and processes the collected environmental information and video information, petrochemical enterprise alarm information, dangerous chemical distribution information, fire-fighting facility and protective target distribution information, related department information and the like, performs accident situation prediction, and pushes prediction and early warning information to the portable prediction and early warning PAD; the portable prediction and early warning PAD is connected with the rear judgment platform in real time through wireless communication, receives the prediction and early warning information pushed by the rear judgment platform, resource deployment and scheduling information, and feeds back scene information and resource deployment and scheduling conditions to the rear judgment platform. The application can improve on-site emergency rescue capability and efficiency.

The invention discloses a high-corrosion-resistant fire-fighting forcible entry robot, and belongs to the technical field of forcible entry robotics.The high-corrosion-resistant fire-fighting forcible entry robot comprises a fixing plate, a rotating disc is mounted at the top of the fixing plate, crawler belts are arranged on the two sides of the fixing plate, and a mounting box is fixedly mounted at the top of the rotating disc; the device comprises a mounting box, a buckle plate is fixedly connected to the rear end of the mounting box, a transmission assembly is mounted on the mounting box, a dust collection assembly is mounted on the buckle plate, and supporting discs are fixedly connected to the bottoms of multiple first hydraulic rods. According to the invention, dispersion and accumulation of dust in a rescue environment are effectively reduced, the on-site air quality is improved from the source, the health risk that rescue workers inhale toxic and harmful dust and corrosive dust can be remarkably reduced in a closed space, an underground passage with poor ventilation or a chemical accident site, and the service life of the forcible entry robot is greatly prolonged.

This application relates to the field of textile technology, specifically disclosing a flame-retardant, high-temperature resistant, corrosion-resistant conductive fiber, fabric, and manufacturing process. The flame-retardant, high-temperature resistant, corrosion-resistant conductive fiber of this application exhibits excellent conductivity, fully overcoming the high resistivity defect of polyphenylene sulfide (PPS), while retaining the advantages of PPS such as high temperature resistance, flame retardancy, and corrosion resistance. It is suitable for manufacturing special protective clothing and gear for use in gas leak and chemical accident rescue operations.

This invention discloses a computer simulation-based emergency evacuation simulation method for hazardous chemical accidents. The simulation method includes the following steps: constructing a simulation model including a display map, displayed objects, and simulation rules; setting the simulation background based on accident information, and setting the initial states of personnel distribution, traffic conditions, and material reserves; updating the state and position of displayed objects on the display map in discrete rounds according to the simulation rules and the initial states, and dynamically simulating personnel evacuation and material supply; evaluating the simulation results, adjusting the simulation rules based on the evaluation results, repeating the simulation, and outputting an optimized emergency evacuation strategy. This invention maps disaster spread, personnel risk evolution, and resource scheduling into the same round time domain, realizing multi-process joint simulation and effectively supporting the evaluation and optimization of emergency evacuation strategies for hazardous chemical accidents.

The invention provides a precise instrument elimination controller, and relates to the technical field of nuclear and chemical accident consequence safety protection. The device comprises a machine body, a medicament supply module, a decontamination control bin, a filtering module, a vacuum suction module, a waste collection module, a heating assembly and an auxiliary falling-off module, wherein the decontamination control bin is used for accommodating a precise instrument to be decontaminated; the medicament supply module is used for spraying a self-breaking copolymer film decontaminating agent or a chemical decontaminating agent on the surface of the precise instrument in the decontaminating, controlling and decontaminating bin; the heating assembly is used for heating the precise instrument sprayed with the self-breaking copolymer film decontaminating agent or the chemical decontaminating agent; the auxiliary falling-off module is used for assisting the copolymerization film to fall off from the surface of the precise instrument; the vacuum suction module is used for generating high-pressure air flow in the decontamination bin to purge the copolymer film waste, and the air flow carrying pollutant dust can enter the filtering module from the decontamination bin to be filtered; and the waste collecting module is used for collecting the copolymer film waste discharged from the decontamination bin.

The utility model discloses an unmanned aerial vehicle applied to three-dimensional prevention and control of dangerous chemical accidents, which comprises a fuselage, a plurality of groups of supporting legs are respectively arranged on the outer side of the fuselage, propellers are respectively arranged on the upper end surfaces of the supporting legs, a first servo motor is arranged on the fuselage above a camera, and a second servo motor is arranged on the fuselage above the camera. One end of an output shaft of the first servo motor is connected with a rotating shaft through a coupler, and a protective cover is arranged on the outer wall of the rotating shaft. According to the unmanned aerial vehicle applied to the three-dimensional prevention and control of the dangerous chemical accidents, the protective cover and the vehicle body form a rotating structure through the rotating shaft under the action of the first servo motor, so that related assemblies can be effectively protected through the rotating protective cover while work of the assemblies such as the camera and the smoke collector is not affected; the water storage tank and the shell of the device form a spiral locking structure through a bolt, a connecting rod and a fixing plate, so that a corresponding treatment device is selected for spiral installation according to the leakage condition of dangerous chemicals, and the practicability of the device is improved.

The invention is applicable to the technical field of dangerous chemical accident emergency rescue, and provides a movable emptying ignition device for a blast gas tank truck, which comprises an emptying ignition mechanism, the emptying ignition mechanism comprises a counterweight base and a combustion gun arranged on the counterweight base and used for combusting combustible gas exhausted from the tank truck; the air temperature type vaporizer is arranged on one side of the combustion gun and used for rapidly vaporizing the liquid state; and the gas-liquid separation tank is arranged on the frame of the air temperature type vaporizer and is used for separating the liquid which is not completely vaporized again, and the gas-liquid separation tank is connected with the air temperature type vaporizer through a pipeline. The movable emptying ignition device of the blast gas tank car is easy to operate, safe, reliable and efficient in disposal, the flexibility of gas-phase / liquid-phase discharge of materials and the safety of remote ignition are achieved, the pressure in the tank is remarkably reduced with the high emptying combustion efficiency, and the gas-phase / liquid-phase discharge safety of the materials is improved. And a more advanced, active and reliable solution is provided for emergency rescue of dangerous chemical accidents.

The embodiment of the invention discloses a hazardous chemical accident simulation analysis method. A specific embodiment of the method comprises the following steps: for hazardous chemicals involved in a leakage accident to be simulated, determining the attributes of the hazardous chemicals and the container attributes of the hazardous chemicals; based on the container attribute and the hazardous chemical substance attribute, whether leakage is instantaneously released or continuously released is judged, so that an accident scene is determined; selecting a simulation model matched with the accident scene from a plurality of preset simulation models as a target simulation model; performing simulation analysis on the accident related information by using the target simulation model, and determining simulation result information; displaying simulation result information; wherein the various simulation models comprise at least two of the following models: a vapor cloud explosion model, a diffusion model, a jet fire model, a boiling liquid expansion vapor cloud explosion model and a liquid pool fire model. Therefore, a novel simulation analysis mode of the dangerous chemical accident is provided.

The invention relates to a dangerous chemical accident consequence prediction method and system. The prediction method comprises the following steps: constructing time sequence characteristic information of dangerous chemicals; optimizing different weight updating modes used in the training process of the long and short term memory network model through a regularization algorithm, and obtaining a fusion model trained by adopting different weight updating modes; and according to the prediction performance of each fusion model on the accident consequence of the dangerous chemicals, inputting the time sequence characteristic information into the fusion model meeting a preset condition, and generating the accident prediction consequence of the dangerous chemicals. According to the method, the consequences of accidents such as leakage, deflagration and fire disasters of the dangerous chemical storage tank can be quickly predicted more efficiently and accurately, and reliable technical support is provided for emergency site handling personnel.

The present application relates to a petroleum chemical accident tracing and decision-making method and device, the method comprising: obtaining multi-source data of a petroleum chemical production device through an industrial internet of things or a local area network, and preprocessing the multi-source data; using a Z-score algorithm and an isolation forest algorithm to detect anomalies in the preprocessed multi-source data, obtaining an anomaly label, and triggering an accident tracing and emergency decision-making instruction based on the anomaly label; vectorizing historical accident data in the multi-source data, and in response to the accident tracing and emergency decision-making instruction, performing similarity matching between a current accident feature vector and a historical accident feature vector to obtain a historical case with the highest similarity; calling a pre-trained generation model to process the context of the current accident and the historical case, and generating a tracing report result for the current accident; and analyzing the tracing report result and real-time multi-source data through reinforcement learning to generate an emergency strategy, and executing an emergency response according to the emergency strategy.

The invention discloses a spraying terminal for remotely treating liquid hazardous chemical substance leakage, and relates to the field of hazardous chemical substance leakage treatment. The problems that in the prior art, due to insufficient safety of a spray gun, small protection radius of a spray robot, limited handling capacity and the like, large-scale liquid hazardous chemical accidents cannot be handled, the handling effect is poor, and safety is poor are solved. The spraying terminal comprises a remote controller and a self-walking robot, and the self-walking robot comprises an angle-adjustable support, a spraying device installed on the support and a control valve set used for controlling the spraying device and the support. The explosion-proof automatic walking robot is small in size, strong in obstacle crossing ability and high in whole machine safety, and can replace personnel to enter a dangerous place for operation through remote control. The spraying terminal does not carry chemicals and is connected with an external chemical supply system through a pipeline, the chemicals are supplied remotely through the supply system, and the requirement for the handling capacity of large leakage accidents is met.

The invention belongs to the field of industrial safety and artificial intelligence, and discloses a chemical accident risk analysis method and system based on text mining and GNN-Apriori association rules. The method comprises the following steps: cleaning and structuring a chemical accident text, fusing TextRank, BM25 and BERT algorithms, and extracting a high-quality keyword set through a weighted model; constructing a graph structure based on a keyword co-occurrence relationship, and learning node semantic embedding by using GNN; inputting the embedded vector into an improved Apriori algorithm, and mining a semantic enhanced association rule in combination with semantic similarity, support degree, confidence and lifting degree; and finally, constructing a chemical accident causal complex network, and evaluating key nodes by using node centrality by taking the improvement degree as an edge weight to realize risk propagation path analysis and visual display. According to the method, chemical accident causes can be intelligently identified, semantic association is mined, a causal network is modeled, and interpretable decision support is provided for accident prevention and the like.

This utility model provides an emergency ventilation device for chemical accidents in confined spaces, relating to the field of emergency ventilation technology. It includes a collector with an exhaust fan fixedly mounted on its front side; four sets of traveling wheels rotatably mounted on the lower sides of the collector; a trapezoidal compartment fixedly mounted inside the collector; a winding frame with a winding wheel rotatably mounted on its top, a rocker arm fixedly mounted on one side of the winding wheel's shaft end, and a flat belt fixedly wound around the winding wheel; the rear end of the collector has a square bucket-shaped structure, with the flat belt connected to the rear end of the collector; and fixing rings are fixedly mounted at equal intervals around the flat belt, with the inner wall of the fixing rings having a threaded structure. This utility model is flexible and efficient in movement: the device can accurately move to the location of a chemical leak through differential steering and forward / reverse rotation control via multiple sets of traveling wheels. Combined with anti-slip tires to enhance stability, it ensures reliable movement in various scenarios, improving operational convenience.

The invention relates to the field of emergency treatment devices, in particular to a dangerous chemical accident site emergency treatment device which comprises a mounting plate and further comprises a burying mechanism, a spraying mechanism and a triggering mechanism, the burying mechanism comprises a square surrounding plate, a sand storage tank, a lifting plate, a driving assembly and an angle adjusting assembly, and the triggering mechanism comprises a pressing rod and a reciprocating sliding assembly. The spraying mechanism comprises an extrusion assembly, a telescopic assembly, a rotating assembly, two storage tanks and a plurality of atomization nozzles, the telescopic assembly is arranged at the top of the mounting plate, and the atomization nozzles are symmetrically arranged on the telescopic assembly. And the device can spray anti-solubility foam and a neutralizer according to the types of leaked chemical liquids, so that the emergency treatment efficiency of different types of leaked chemical liquids is met, and the flexibility and practicability of the device are improved.

The utility model belongs to fire rescue detection technical field, concretely is a kind of portable detection equipment for nuclear and chemical accident fire rescue scene. Including nuclear radiation and chemical comprehensive detection module, infrared spectrum analysis device, field sample detection tube, display screen, air pump, main control board and battery;Field sample detection tube is transparent tube, passes through comprehensive detection module and infrared spectrum analysis device in turn, field sample detection tube one end port is used as air inlet, and the other end port is connected air pump;Nuclear radiation and chemical comprehensive detection module can detect corresponding field sample detection tube in nuclear radiation and chemical component;Infrared spectrum analysis device detects the gas type in corresponding tube;Main control board is connected with nuclear radiation and chemical comprehensive detection module, infrared spectrum analysis device, display screen, air pump and battery.The utility model structure is simple, and it is convenient to operate, can quickly and effectively detect nuclear radiation, hazardous chemicals, toxic and harmful gas in the air of nuclear and biological chemical accident scene.

The application provides a risk assessment method and system for a typhoon-induced dangerous chemical product accident, and belongs to the field of dangerous chemical product safety assessment, and comprises the following steps: obtaining typhoon path and typhoon intensity information, and constructing a typhoon disaster intensity calculation model; determining a failure probability of each dangerous chemical product facility in the typhoon disaster intensity calculation model; determining an accident type and an accident range according to the type of the dangerous chemical product facility; determining a domino cascade accident probability of other dangerous chemical product facilities according to the failure probability of the dangerous chemical product facility and the accident type; obtaining a risk assessment result of the dangerous chemical product facility according to the failure probability of each dangerous chemical product facility and the domino cascade accident probability of the surrounding dangerous chemical product facilities; and determining a dangerous chemical product accident risk assessment result according to the risk assessment result of each dangerous chemical product facility. The method couples the failure probability of the facility itself under the environment and the failure probability caused to the facility after the surrounding accidents, and improves the assessment accuracy.

The invention discloses a dangerous chemical storage tank area risk assessment method and device based on comprehensive risks, and relates to the technical field of chemical accident risk analysis, and the method comprises the steps: constructing a basic database of a dangerous chemical storage tank area; performing failure probability analysis on the potential accident source according to the basic database to determine an initial accident frequency; calculating a first economic loss expectation based on the initial accident frequency; performing upgrade probability analysis on each affected device, and determining the domino accident frequency of the affected device in combination with the initial accident frequency; calculating a second economic loss expectation according to the domino accident frequency; calculating a comprehensive risk probability according to the initial accident frequency and the domino accident frequency; calculating an accumulated economic loss expectation according to the first economic loss expectation and the second economic loss expectation; and performing risk assessment according to the comprehensive risk probability and the accumulated economic loss expectation of each device. According to the scheme, the accuracy of performing economic loss and risk assessment on the dangerous chemical storage tank area can be improved.