Cellular automata based rapid outburst flood routing simulation and analysis method

Abstract

The invention belongs to the field of virtual geographical environment research of a geographic information system, particularly relates to an outburst flood routing simulation and analysis technique, and relates to a cellular automata based rapid outburst flood routing simulation and analysis method. By the method, the problem that an error between a final numerical analysis result and actual water regimen is large due to randomness of cellular scale partitioning at present can be solved; meanwhile, accurate and rapid comprehensive simulation and analysis can be performed on dam-break flood routing and influences by means of reasonable setting of a cellular neighborhood range and combination of spatial analysis capacity of a GIS (geographic information system) and spatial-temporal modeling capacity of cellular automata simulation. The method includes construction of a two-dimensional cellular automata simulation model, optimization of a cellular spatial data structure and virtual geographical environment based visual simulation and analysis.

Description

technical field [0001] The invention belongs to the research field of virtual geographic environment of geographic information system, and in particular relates to the simulation analysis technology of burst flood evolution. Background technique [0002] There are 85,000 reservoirs of various types in my country, and nearly 40,000 of them are in danger of dam failure. In addition, frequent earthquakes, landslides, rainstorms and other natural disasters in recent years have led to the formation of a large number of barrier lakes. Due to the great uncertainty and failure risk in the stability of the barrier lake dam body, how to efficiently analyze and evaluate the failure risk is particularly important. [0003] Due to the suddenness, rapid expansion, short response time, and complex and changeable influencing factors of flood outburst events, high requirements are put forward for the intuitiveness, rapidity, and accuracy of the analysis of the outage development process and...

AI Technical Summary

Problems solved by technology

However, the existing research mainly focuses on the acquisition of cell state transition rules, and lacks the scale effect analysis of the collapsed cells. The division of cell scales is relatively random, which leads to the fact that in practical applications, the final numerical analysis results are often different from those of The actual water regime error is relatively large, and there are large limitations in application

[0005] At the same time, the simulation of the spatio-temporal process of collapse is generally restricted by multiple factors. CA has outstanding advantages in simulating the influence of natural factors on geographical processes. However, there are few studies on the interaction model and theory of human interaction in the process of simulation analysis. The simulation of spatio-temporal process and GIS spatial analysis is not tightly combined, and it is difficult to obtain the different vulnerabilities and mutual constraints of economic, population, engineering and land disaster-affected bodies under the dynamic evolution of outburst floods

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