| 基于层次分析法和GIS的甘肃省武山县地质灾害易发性区划研究 |
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| 引用本文： | 张旭光,李瑞冬.基于层次分析法和GIS的甘肃省武山县地质灾害易发性区划研究[J].甘肃地质学报,2012(3):70-78. |
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| 作者姓名： | 张旭光 李瑞冬 |
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| 作者单位： | 甘肃省地质环境监测院,甘肃兰州730050 |
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| 摘 要： | 武山县地质构造复杂,岩土体破碎,泥石流、滑坡、崩塌等地质灾害发育。以GIS平台的空间分析和栅格计算功能为基础,选取区内对地质环境影响较大的和易量化的因素作为评价因子,通过层次分析法确定各评价因子的权重,通过栅格化各评价因子形成叠加运算图层,结合计算分析结果和野外调查认识,形成最终的地质灾害易发性分区图,较之传统的评价和分区方法具有半定量评价与定性认识相结合的改进,在具体实践中具有较明显的优点。
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| 关 键 词： | 层次分析法 GIS 地质灾害 易发性区划 武山县 |
GEOLOGICAL HAZARD SUSCEPTIBILITY ZONATION OF WUSHAN COUNTY IN GANSU BASED ON ANALYTICAL HIERARCHY PROCESS AND GIS |
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| ZHANG Xu-guang and LI Rui-dong.GEOLOGICAL HAZARD SUSCEPTIBILITY ZONATION OF WUSHAN COUNTY IN GANSU BASED ON ANALYTICAL HIERARCHY PROCESS AND GIS[J].Acta Geologica Gansu,2012(3):70-78. |
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| Authors: | ZHANG Xu-guang and LI Rui-dong |
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| Institution: | (Gansu Institute of Geological Environment Monitoring,Lanzhou 730050,China) |
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| Abstract: | Due to the complex geological structures and broken rock and soil masses,Wushan County is an area where occurred lots of geological hazards such as debris flow,land slide and collapse.By means of the function of spatial analysis and grid calculation from GIS platform,the paper studied how to make the susceptibility zonation by taking Wushan County as an example.First,select the evaluation factors which influence geological environment seriously,and are easy quantization;secondly,determine the weight of each factors by means of the analytic hierarchy process;thirdly,make the stack arithmograph layer by rasterizing each factors;Finally,complete the susceptibility zone map of study area by combining calculation results and field survey. |
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| Keywords: | analytical aierarchy arocess GIS geological hazard susceptibility zonation Wushan County |
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