6 results about "Domino effect" patented technology

The invention discloses a restricted space hydrogen leakage domino effect accident rapid prediction method. The method comprises the following steps: S1, establishing a restricted space hydrogen leakage diffusion data set; s2, establishing a single blast accident consequence data set; s3, establishing a secondary accident consequence data set; s4, establishing a hydrogen leakage diffusion prediction model; s5, establishing a single blast accident consequence prediction model; s6, establishing a secondary accident consequence prediction model; and S7, based on the hydrogen leakage diffusion prediction model, the single explosion accident consequence prediction model and the secondary accident consequence prediction model, establishing a restricted space hydrogen leakage domino effect accident prediction model. According to the method, hydrodynamic simulation is carried out on a hydrogen leakage diffusion scene, a single fire blast accident scene and a secondary accident scene, the evolution law of the occurrence process and the consequence of the domino effect accident is revealed, combined prediction is carried out through cooperation of the prediction model, and accurate and rapid prediction of the consequence of the domino effect accident in the limited space is achieved.

This application discloses a method, apparatus, electronic device, and storage medium for analyzing the causes of power accidents. The method includes: acquiring an accident report of a power accident and extracting multiple causal events from the accident report; determining the relationship between the multiple causal events based on their order of occurrence and frequency, and constructing an accident causal network; analyzing the importance of network nodes through the topological properties of the accident causal network, and calculating the causal risk of the power accident using cascading failure theory, generating risk management recommendations. This effectively identifies the unique causes of each type of accident and facilitates the identification of the causes that play a significant role in directly triggering the accident. Therefore, it solves the problems of related technologies failing to identify the unique key causes of each type of accident, hindering the identification of key causes from the perspective of the direct causes of the accident, and failing to fully consider the dynamic process of the domino effect, resulting in insufficient simulation of the actual occurrence process of the accident.

This invention provides a dynamic analysis method and system for domino accident risks in petrochemical plants. The method mines the correlations between different hazardous events in historical accidents of petrochemical plants, comprehensively analyzes all possible domino accident chains around the processes and equipment of relevant units, forming a domino accident chain library for the petrochemical plant; then it analyzes the reliability and failure probability of available safety barriers in the petrochemical plant; analyzes the accident escalation probability of the petrochemical plant under the action of safety barriers, characterizing the domino risk escalation probability; selects hazardous accident chains whose risk escalation probability exceeds a set risk probability rule, calculates and predicts the dynamic risk probability of the petrochemical plant based on the consequences of the hazardous accidents, executes risk warnings, and provides risk control solutions. This approach overcomes the shortcomings of existing analysis techniques, such as overly conservative results and insufficient realism, comprehensively considers domino effect accident scenarios caused by the consequences of risk events, and achieves a systematic quantitative risk assessment of hazardous accidents.

The present invention provides a method for dispatching rescue resources for emergency response to hazardous chemical accidents. Hazardous chemical accidents have a domino effect. In the process of emergency rescue dispatch, the resource demand and dispatch of secondary accidents must be taken into account. The method is as follows: when an emergency occurs, set F is the set of primary disaster affected points, set M is the set of secondary disaster affected points, and for each estimated secondary disaster affected point M, v , with probability ρ v Secondary disasters occur; Set L is the emergency resource rescue point; Under emergency conditions, the types of emergency resources required by the primary disaster affected point F and the secondary disaster affected point M are recorded as R = {R j |j=1,2,…j}; emergency resource types R1, R2, R3 are sorted according to resource supply rules and time order matrix SP |L|×|F∪M| Allocate resources to each disaster site, allowing for the rapid development of emergency resource dispatch plans that meet the resource needs of each site. Maximizing the needs of disaster sites while balancing timeliness and cost-effectiveness is crucial for rescue efforts.

A method and system for intelligent assessment of domino effect accidents is disclosed. The method includes: constructing a graph structure representation of the evolution of domino effect accidents and establishing a causal matrix as the adjacency matrix of a graph neural network; establishing a trigger criterion database and vectorizing the features of target objects; performing initial-layer accident assessment, comparing physical consequence vectors with feature vectors to determine triggering conditions; dynamically generating domino layer accidents and performing iterative assessments, updating the causal matrix based on trigger determination results, and performing path pruning and tensor operations; summarizing risks and calculating the total risk value. The system includes a hazard source preprocessing module, an initial-layer assessment module, a trigger criterion database module, a domino layer assessment module, and an output module. This invention, by integrating physical mechanisms and a graph neural network architecture, achieves dynamic deduction and quasi-quantitative assessment of domino effect accidents, possessing cross-scenario versatility and efficient parallel computing capabilities.

This application provides a data management method, device, storage medium, and computer program product. The method includes: acquiring the three-dimensional coordinate information corresponding to each node in a tree structure; performing projection processing on each three-dimensional coordinate information to obtain first node information in M ​​first plane dimensions; where M is a positive integer; performing operation processing on the target node based on the first node information in the first plane dimensions; wherein the operation processing includes one or more of addition processing, deletion processing, and query processing, so that subsequent operation processing on the target node can be performed based on the first node information in the first plane dimensions. In this way, even in complex scenarios involving node addition, deletion, migration, and query, only the information of the corresponding node needs to be modified, without affecting other nodes, avoiding a domino effect and greatly improving system performance and stability.