基于GIS的黄河上游拉干峡—寺沟峡段滑坡危险性评价
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摘要
结合评价区实际,选取地貌类型、坡度、地层岩性、降雨、地震作为影响滑坡灾害的评价因子,以汶川地震最新研究成果为依据,在断层两侧设定不同缓冲区范围,运用层次分析法确定各因子权重,利用GIS空间分析功能,实现评价区滑坡危险性区划。结果表明滑坡灾害高发区主要集中在龙羊峡库区右岸高陡岸坡地带、循化-群科盆地两侧的低山丘陵区。与实际调查结果基本相吻合,可为今后区内滑坡灾害的预测及预防提供科学参考。
According to the real situation of the research region, we select physiognomy, slope, lithology, rainfall and earthquake as the assessment factors, use the newest results based on the Wenchuan earthquake, set two different ranges in both sides of buffer, define the weight coefficient of each factor with the AHP method, realize the risk demarcation for assessment of research region by the spatial analysis function of GIS.The research result shows the high occurrence area of landslide are mainly in the district of abrupt slope on the right side of the Longyangxia Gorge and in the hilly district on the both sides of Xunhua-Qunke basin, which is in accordance with the result of investigation and can be the reference for the following hazard treatment.
According to the real situation of the research region, we select physiognomy, slope, lithology, rainfall and earthquake as the assessment factors, use the newest results based on the Wenchuan earthquake, set two different ranges in both sides of buffer, define the weight coefficient of each factor with the AHP method, realize the risk demarcation for assessment of research region by the spatial analysis function of GIS.The research result shows the high occurrence area of landslide are mainly in the district of abrupt slope on the right side of the Longyangxia Gorge and in the hilly district on the both sides of Xunhua-Qunke basin, which is in accordance with the result of investigation and can be the reference for the following hazard treatment.
引文
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[2]A.Carrara,M.Cardinali,R.Detti,F.Guzzetti,V.Pasqui.GIS tech-niques and statistical modelsin evaluatinglandslide hazard[J].Earth Surface Processes and Landforms,1991,16(5):427-445.
[3]R.Soeters,C.J.van Westen.Slope instability.The role of re-mote sensing and GIS in recognition,analysis and zonation[J].Natural hazards and remote sensing[M].1994:44-58.
[4]Andrea G.Fabbri,Chang-Jo F.Chung,Paola Napolitano.GIS and sensitivity analysis in aquifer vulnerability representations[J].International Geological Congress,Abstracts-Congres Ge-ologique Internationale,Resumes,199630(3):496.
[5]吴树仁,胡道功,谭成轩,等.长江三峡库首区滑坡灾害空间预测[J].中国地质灾害与防治学报.1998,8(3):141-146.
[6]戴福初,李军.地理信息系统在滑坡灾害研究中的应用[J].地质科技情报,2000,19(1):91-95.
[7]张桂荣,殷坤龙,刘传正,等.基于GIS的陕西省旬阳地区滑坡灾害危险性区划[J].中国地质灾害与防治学报.2003,14(4):39-43.
[8]吴树仁,董诚,石菊松,等.地质灾害信息系统研究—以重庆市丰都为例[J].第四纪研究.2003,23(6):683-691.
[9]高学忠,洪文之,郭鹏飞,等.黄河上游(龙羊峡-刘家峡段)环境工程地质勘察报告书[R].1988
[10]黄润秋,李为乐.“5.12”汶川地震触发地质灾害的发育分布规律研究[J].岩石力学与工程学报.2008,27(12):2585-2592
[11]郝海,踪家峰.系统分析与评价方法[M].北京:经济科学出版社,2007.
[2]A.Carrara,M.Cardinali,R.Detti,F.Guzzetti,V.Pasqui.GIS tech-niques and statistical modelsin evaluatinglandslide hazard[J].Earth Surface Processes and Landforms,1991,16(5):427-445.
[3]R.Soeters,C.J.van Westen.Slope instability.The role of re-mote sensing and GIS in recognition,analysis and zonation[J].Natural hazards and remote sensing[M].1994:44-58.
[4]Andrea G.Fabbri,Chang-Jo F.Chung,Paola Napolitano.GIS and sensitivity analysis in aquifer vulnerability representations[J].International Geological Congress,Abstracts-Congres Ge-ologique Internationale,Resumes,199630(3):496.
[5]吴树仁,胡道功,谭成轩,等.长江三峡库首区滑坡灾害空间预测[J].中国地质灾害与防治学报.1998,8(3):141-146.
[6]戴福初,李军.地理信息系统在滑坡灾害研究中的应用[J].地质科技情报,2000,19(1):91-95.
[7]张桂荣,殷坤龙,刘传正,等.基于GIS的陕西省旬阳地区滑坡灾害危险性区划[J].中国地质灾害与防治学报.2003,14(4):39-43.
[8]吴树仁,董诚,石菊松,等.地质灾害信息系统研究—以重庆市丰都为例[J].第四纪研究.2003,23(6):683-691.
[9]高学忠,洪文之,郭鹏飞,等.黄河上游(龙羊峡-刘家峡段)环境工程地质勘察报告书[R].1988
[10]黄润秋,李为乐.“5.12”汶川地震触发地质灾害的发育分布规律研究[J].岩石力学与工程学报.2008,27(12):2585-2592
[11]郝海,踪家峰.系统分析与评价方法[M].北京:经济科学出版社,2007.
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