Fire-fighting three-dimensional digital pre-arranged planning method fusing fire behavior prediction model

Abstract

The invention relates to the technical field of fire-fighting digitization, and provides a fire-fighting three-dimensional digital planning method fusing a fire behavior prediction model. The fire-fighting three-dimensional digital planning method comprises the steps: building a three-dimensional visualization model of a building structure according to a building structure drawing, and extractingthe internal layered structure information and fire-fighting information of the building structure; indoor panoramic image generation: collecting indoor information through a panoramic camera or a camera, and obtaining indoor material attributes and material parameters; and inputting the building structure internal layered structure information of the three-dimensional visualization model, the indoor material attribute and the material parameter information of the fire disaster and the weather information when the fire disaster occurs into the fire behavior prediction model to obtain a fire behavior spreading trend analysis result. By means of the three-dimensional visualization, indoor panorama and fire behavior prediction model technology, the fire-fighting three-dimensional digital planning method can be applied to various fire scenes in real time, can make corresponding adjustment of three-dimensional digitization and prediction models according to real-time fire scene dynamic changes, and can meet the fire fighting actual combat requirements. The fire-fighting three-dimensional digital planning method has the advantages of flexibility, convenience, accuracy, high efficiency, intelligent fire protection and scientific and technological fire protection.

Description

technical field [0001] The invention relates to the technical field of fire protection digitalization, in particular to a method for a three-dimensional fire protection digitalization plan integrated with a fire prediction model. Background technique [0002] With the rapid development of our country's economy, and our country is in the critical period of economic reform and gradual transformation, the number of complex places such as large-scale urban buildings, underground transportation hubs, hospitals, and chemical enterprises continues to increase, and disasters such as building fires occur from time to time. Due to the complexity and unpredictability of natural disasters such as fires, the personal safety of firefighters is facing a great threat. How to scientifically command and make decisions, efficiently fight fires and rescue while ensuring the safety of firefighters' lives is placed in front of firefighters. A very urgent and realistic subject. [0003] Fire Dyna...

AI Technical Summary

Problems solved by technology

At present, it is proposed to use FDS smoke simulation data as the basis, and use the particle system grid to realize the realistic visualization of fire smoke. The combination of application scenarios lacks a certain degree of practicality; there is a proposal to use FDS to realize the application of real scenarios, using computer simulation and full-scale field experiments in the subway, and giving the open stairs of subway stations under different wind speeds and inclinations using air curtains. The effect of smoke, and determined the critical speed and wind direction requirements of the air curtain to block the smoke, and provided technical support for the application of the air curtain to block the smoke in the subway station. Although this method realizes the scene application in the underground transportation hub, and improves the It has a certain prediction accuracy, but it only gives the prediction results of specific scenarios. When an accident occurs, how to guide, evacuate and command the trapped people reasonably in combination with the building structure does not give corresponding countermeasures. In addition, a large-scale high-rise building indoor fire emergency evacuation instruction escape method and system is proposed. According to the specific situation of the fire collected when a large-scale high-rise building fires, a dynamic model of fire spread is established to predict the fire and smoke propagation characteristics. Combined with the structure of large high-rise buildings, the optimal fire escape route is established for people on different floors, which can quickly provide all personnel with evacuation routes, avoid existing toxic gases such as smoke and fire diffusion areas, and ensure personnel safety. However, this method is based on the existing structure and state to predict, and lacks certain flexibility. In the face of complex and changeable fire scene environment, it needs to establish a model calculation and analysis again, and the time period is long. The method cannot meet the needs of actual combat

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