NDLI: Landslide hazard evaluation of Zigui based on GIS information model in three gorges reservoir

Content Provider	IEEE Xplore Digital Library
Author	Rnixiang Liao Shimei Wang Haifeng Huang Feifei Xu
Copyright Year	2011
Description	Author affiliation: Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China (Rnixiang Liao; Shimei Wang; Haifeng Huang; Feifei Xu)
Abstract	The landslide hazard was evaluated based on the Zigui section in three gorges reservoir in this paper. First of all, the geology, topography and other information were analyzed to establish the landslide geological hazard database of Zigui segment; then, the digital elevation model (DEM) of such this segment was built by inputting each data in the form of map layer into the GIS (geographical information system) and combing geography information system technology; some geography information was collected, such as elevation, slope direction, gradient as well as the distance to the river; then the geological information of the research area was collected according to the geological survey data, such as formation lithology, geological structure, and so on; at last, the six indexes presented above were considered as evaluation factors to establish a landslide geological hazard model. Each information value of each layer was calculated by the model to obtain the information map of a single factor; then they were accumulated to obtain the integrate information map of the whole research area, namely, the landslide hazard shot chart. The landslide geological hazard area was divided into four grades in accordance with different shots: stability area, low-dangerous area, middle-dangerous area and high-dangerous area. It is indicated by the evaluation result that information model, which can well service the research of landslide hazard, is an effective method to carry out regional geological hazard forecast. The evaluation result can provide references for reservoir engineering safety, environmental protection as well as natural disasters prevention and reduction to realize the informationization and scientificalization of landslide geological hazard prevention and reduction.
Starting Page	486
Ending Page	491
File Size	145765
Page Count	6
File Format	PDF
ISBN	9781424483525
e-ISBN	9781424483518
DOI	10.1109/ICSDM.2011.5969093
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-29
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	GIS Geographic Information Systems Geology Laboratories Information value model Hazards Silicon Terrain factors Landslide Rivers Three Gorges Reservoir Hazard evaluation
Content Type	Text
Resource Type	Article

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