GIS-based petrochemical enterprise gas leakage continuous dynamic simulation display method

Abstract

The invention discloses a GIS (Geographic Information System)-based petrochemical enterprise gas leakage continuous dynamic simulation display method, which adopts an improved dynamic continuous smokeball integral gas diffusion model and can realize a dynamic simulation diffusion process of gas leakage along with time. Meanwhile, a petrochemical enterprise image and a vector layer are loaded; various condition parameters (such as a leakage source position, a leakage amount, a leakage rate, an environment wind direction, an environment real-time wind speed and the like) are integrated; the method is developed on the basis of an ArcGIS API (Application Programming Interface) for javascript and the like. Dynamic display and deduction of the gas leakage diffusion range of the petrochemical enterprise are realized, the possible diffusion influence range of the accident can be deduced at the first time after the leakage accident of the petrochemical enterprise occurs, and a reference basisis provided for personnel evacuation and accident emergency auxiliary decision making.

Description

technical field [0001] The invention belongs to the field of geographic information system technology and safety engineering technology, and in particular relates to a GIS-based continuous dynamic simulation display method for gas leakage in petrochemical enterprises. Background technique [0002] At present, there are mainly three ways to display the gas leakage and diffusion of petrochemical enterprises based on GIS: [0003] 1. Apply the Gaussian plume model to realize the static display of the diffusion influence range: [0004] Gaussian plume model [0005] Occasions of use: small holes in the gas phase of pressure vessels or leakage of gas pipes, valves, flanges, etc. [0006] a) Continuous source (quasi) wind speed greater than lm / s; [0007] b) Continuous source (quasi) wind speed is less than 0.5m / s; [0008] c) Continuous source (quasi) wind speed is greater than 0.5m / s and less than lm / s; [0009] d) Mixed layer (inner) diffusion (mode). [0010] Mode descri...

AI Technical Summary

Problems solved by technology

[0069] However, using the Gaussian plume model and Gaussian puff model to simulate gas diffusion and display in geographic information is difficult to meet the comprehensive needs of petrochemical enterprises in emergency response to gas leakage, and there are many problems and limitations in the display effect

[0070] Specifically, the GIS display effect simulated by the Gaussian plume model is a steady-state diffusion area, which is a diffusion space that does not change after leakage to a certain extent. It is a static result. In the emergency rescue process of petrochemical enterprises , it is difficult to respond effectively according to a static final result value

[0071] The GIS display result of the Gaussian puff model simulation is a dynamic leakage change effect, but because the Gaussian puff model targets a puff, it only simulates the simulated diffusion area of ​​a puff, and cannot realize the entire gas leakage process The scientific simulation shows that the emergency rescue of petrochemical enterprises is difficult to make auxiliary decisions based on the simulation results of a puff

[0072] The effect of gas leakage and diffusion simulation is displayed through accident simulation software such as Safer Trace and Phast, which is not based on the actual geographic information system to display the effect of leakage, so it is difficult to apply it in the accident emergency management and rescue system of petrochemical enterprises

Images