| 黑龙江勃利县地质灾害易发区评价 |
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| 引用本文： | 徐德兰.黑龙江勃利县地质灾害易发区评价[J].中国地质灾害与防治学报,2011,22(4):81-84. |
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| 作者姓名： | 徐德兰 |
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| 作者单位： | 黑龙江省地质环境监测总站,黑龙江哈尔滨,150030 |
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| 摘 要： | 本文以黑龙江省勃利县为例,采用地质灾害综合危险性指数法对地质灾害进行易发定量评价。首先将勃利县行政区划图进行网格剖分,运用栅格数据处理方法进行剖分,然后根据各单元的地质、地形地貌(坡度)、气候(植被覆盖)以及人类工程活动等条件(上述判别方法),利用MAPGIS空间分析功能,求取评价单元的潜在地质灾害强度指数与现状地质灾害强度指数,分级赋值进行换算叠加,获得评价单元的地质灾害综合危险性指数,再依据地质灾害综合危险性指数,合并相同单元格,划定地质灾害易发区。
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| 关 键 词： | 地质灾害 易发区 定量划分 |
Zonation of geological hazard prone area in Boli county of Heilongjiang province |
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| XU De-lan.Zonation of geological hazard prone area in Boli county of Heilongjiang province[J].The Chinese Journal of Geological Hazard and Control,2011,22(4):81-84. |
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| Authors: | XU De-lan |
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| Institution: | XU De-lan(Geological environmental monitoring station of heilongjiang province,Harbin 150030,China) |
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| Abstract: | This paper will take Heilongjiang province as an example,give cross-bred quantitative evaluation for the county by comprehensive risk index method of geological disasters.First do mesh dissection on the county administrative zoning map,using grid data processing method,then according to the geology,topography（slope）,climate（vegetation coverage） and human engineering activities conditions of each unit,using the space analysis function of MAPGIS,to get its potential geological disasters intensity index and current geological disasters intensity index.By assigning numbers to each and add up them,we could obtain the comprehensive geological hazards risk index of the units,then according to the comprehensivegeological hazards risk index,merge the same cell and mark out the often occurring areas. |
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| Keywords: | geological disasters cross-bred areas quantitative zonation |
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