| 层次分析法和GIS空间分析法在兰州市区地质灾害易发性评价中的应用 |
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| 引用本文： | 张永军,侯云龙,刘武.层次分析法和GIS空间分析法在兰州市区地质灾害易发性评价中的应用[J].甘肃地质学报,2009,18(4):84-88,71. |
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| 作者姓名： | 张永军 侯云龙 刘武 |
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| 作者单位： | [1]甘肃省地质环境监测院,甘肃兰州730000 [2]甘肃工程地质研究院,甘肃兰州730000 [3]兰州市国土资源局,甘肃兰州730000 |
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| 基金项目： | 中国地质调查局“西北黄土高原地质灾害详细调查”项目(1212010740402)资助 |
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| 摘 要： | 在研究分析兰州市区地质环境背景、地质灾害类型及其发育特点基础上,选择14项指标为影响地质灾害发育程度的主要因素,其中地质灾害发育因子3项,影响和控制地质灾害的地质环境基础因子8项,地质灾害诱发因子3项,采用层次分析法建立了地质灾害易发性评价体系。利用ArcGIS平台,采用野外调查资料、基础地质资料、遥感数据等对各项指标进行量化。在指标分析和数据归一化的基础上,运用ArcGIS系统的栅格运算功能,将兰州市区各评价因子按照层次分析法所确定的权重进行信息叠加计算,得到兰州市区地质灾害易发性定量计算成果栅格图件。经综合研究分析,划定地质灾害易发区。
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| 关 键 词： | 地质灾害 易发性 层次分析 GIS空间分析 兰州市区 |
APPLICATION OF ANALYTIC HIERARCHY PROCESS AND GIS
DIMENSIONAL ANALYTIC METHOD ON PROBABILITY
EVALUATION OF GEOLOGICAL HAZARDS IN LANZHOU CITY |
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| ZHANG Yong-jun,HOU Yun-long and LIU Wu.APPLICATION OF ANALYTIC HIERARCHY PROCESS AND GIS
DIMENSIONAL ANALYTIC METHOD ON PROBABILITY
EVALUATION OF GEOLOGICAL HAZARDS IN LANZHOU CITY[J].Acta Geologica Gansu,2009,18(4):84-88,71. |
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| Authors: | ZHANG Yong-jun HOU Yun-long and LIU Wu |
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| Institution: | 1.Gansu Geo-environmental Monitoring Institute,Lanzhou 730020,China;2.Gansu Institute of Engineering Geology,Lanzhou,730000,China;3.Lanzhou Bureau of Land and Resources,Lanzhou 730000,China) |
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| Abstract: | Based on analyzing the geological environment, types and developing features of geological hazards
in Lanzhou city, it has been employed analytic hierarchy process to establish the evaluating system for probability
of geological hazards by selecting 14 indices as main factors which affect developing extent of geological hazards,
among which include 3 as hazards developing factors, 8 as environmental factors affecting and controlling hazards,
and 3 as hazards inducing factors. Using field survey data, basic geological and remote sensing data to make
quantitative values for each index on the ArcGIS platform. On the basis of index analysis and data normalization,
and through the raster calculation function of ArcGIS System, all of relative weights determined by analytic hier-
archy process for each evaluating factor have been made the process of information mixing to get a calculated
raster map of quantitative probability of geological hazards in Lanzhou city. Finally, the areas of high probability
has been determined by composite analysis. |
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| Keywords: | geological hazards probability analytic hierarchy process GIS dimensional analytic method Lanzhou city |
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