DocumentCode :
1985275
Title :
Landslide Hazard Assessment Based on GIS: A Case Study of a Hydropower Station Area in China
Author :
Liang, Shouyun ; Yang, Xiumei
Author_Institution :
Key Lab. of Mech. on Disaster & Environ. in Western China, Lanzhou Univ., Lanzhou
Volume :
1
fYear :
2008
fDate :
21-22 Dec. 2008
Firstpage :
155
Lastpage :
158
Abstract :
Geographical information systems (GIS) are powerful for spatial analysis, and the analytic hierarchy process (AHP) has certain advantages in multi-index integrated evaluation. The combination of GIS with AHP provides an effective measure for hazard assessment of landslides. Based on detailed field observations and analysis of the factors influencing landslides in the region of the Lianlu Hydropower Station on the Tao River in Gansu province, northwestern China, an aggregate evaluation index system was set up including various factors such as density of faults, relative height of hills, gradient of slopes, land usage and engineering activity. The weight of each factor was determined by AHP. Supported by GIS, using the grid of 1 km2 as the evaluation cell, thematic layers for each factor were established and superimposed. In the end, the study area was divided into four types of risk regions: high-hazard, medium-hazard, low-hazard and non-hazard regions. The results coincide well with the actual hazard distribution observed, and show that the coupled method has a preferable applying foreground for landslide hazard assessment.
Keywords :
geographic information systems; hazards; hydroelectric power stations; power engineering computing; China; Lianlu hydropower station area; analytic hierarchy process; evaluation index system; geographical information system; landslide hazard assessment; multi index integrated evaluation; spatial analysis; Environmental management; Geographic Information Systems; Geology; Hazards; Hydroelectric power generation; Information analysis; Quality management; Research and development management; Resource management; Terrain factors; AHP; GIS; landslide hazard assessment;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Education Technology and Training, 2008. and 2008 International Workshop on Geoscience and Remote Sensing. ETT and GRS 2008. International Workshop on
Conference_Location :
Shanghai
Print_ISBN :
978-0-7695-3563-0
Type :
conf
DOI :
10.1109/ETTandGRS.2008.104
Filename :
5070121
Link To Document :
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