Simulation and Analysis Method of Rapid Evolution of Outbreak Flood Based on Cellular Automata
A cellular automata and simulation analysis technology, applied in the field of outburst flood evolution simulation analysis, can solve the problem of difficulty in obtaining different vulnerabilities and mutual constraints, large water regime errors, and insufficient integration of spatiotemporal process simulation and GIS spatial analysis, etc. question
Inactive Publication Date: 2017-01-04
SOUTHWEST JIAOTONG UNIV
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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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[0051] Such as figure 1 As shown, the construction of the basic database is carried out firstly, including: collecting and processing the data related to the analysis area, and forming the thematic chart and related database of the hazard-bearing factors. The data related to the analysis area include high-resolution satellite remote sensing images and wireless Human-machine aerial images, population, economy, administrative area, traffic, digital elevation model (Digital Elevation Model, DEM) data, rain and water disaster data, the disaster risk factors include land use, population distribution, administrative area, traffic road and social economy.
[0052] Secondly, establish a burst flood evolution model based on cellular automata, including:
[0053] S1, building a two-dimensional cellular automata simulation model, the two dimensions of the two-dimensional cellular automata simulation model are respectively x, y, including:
[0054] Determine the state of the cell; estab...
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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. The present invention provides a method for rapid evolution simulation analysis of outburst flood based on cellular automata, which can solve the current situation where the error between the final numerical analysis result and the actual water regime is relatively large due to the randomness of cellular scale division. , at the same time, a reasonable setting of the cellular neighborhood range, combined with the spatial analysis function of GIS and the spatiotemporal modeling ability of cellular automata simulation, can quickly and accurately comprehensively simulate and analyze the evolution and impact of dam failure floods, including constructing A two-dimensional cellular automaton simulation model, optimizing the cellular spatial data structure, and visual simulation analysis based on a virtual geographic environment.
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...
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IPC IPC(8): G06F19/00G06F17/50
CPCY02A10/40
Inventor 朱军李毅胡良喜胡亚王金宏张阿丽尹灵芝秦川
Owner SOUTHWEST JIAOTONG UNIV