| 基于GIS的地质灾害易发性分区评价——以甘肃省会宁县为例 |
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| 作者姓名： | 董毅兵 郁文 张仲福 |
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| 作者单位： | 甘肃工程地质研究院,兰州 730000 |
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| 基金项目： | 甘肃省国土资源厅“白银市会宁县地质灾害详细调查(编号: 201462042201)”项目资助 |
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| 摘 要： | 会宁县地处甘肃省中部,地质灾害极为发育,共发育有崩塌16处、滑坡12处、泥石流7条,地质灾害已对研究区造成了重大经济损失。为了对会宁县地质灾害易发性进行分区评价及指导防灾减灾,在区域地质灾害调查的基础上,建立了地质灾害数据库,采用层次分析法和GIS空间分析统计方法,选取14个基础指标,建立了会宁县地质灾害易发性分析评价模型,对评价单元叠加分析计算及验证分析,将会宁县地质灾害的易发程度划分为3个区,即高易发区、中易发区和低易发区。通过专家评审法检验地质灾害易发性评价结果,认为评价结果与实际地质灾害情况相符性较好,可以为制定会宁县地质灾害综合防治措施提供依据。
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| 关 键 词： | GIS 地质灾害 易发性分区 会宁县 |
| 收稿时间： | 2019-05-09 |
Susceptibility zoning of geological disasters based on GIS: A case of Huining area in Gansu Province |
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| Authors: | DONG Yibing YU Wen ZHANG Zhongfu |
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| Institution: | Gansu Institute of Engineering Geology, Lanzhou 730000, China |
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| Abstract: | Huining County is located in the central part of Gansu Province, and the geological disasters are extremely developed in this area. There are 16 collapses, 12 landslides and 7 mudslides, which have caused great economic loss. In order to divide and evaluate the susceptibility zoning of geological disasters in Huining County, the authors established the geological disaster database based on the regional geological disaster investigations. The evaluation model of geological disaster susceptibility analysis was established by the analytic hierarchy process and statistical method of GIS spatial analysis, and 14 basic indicator layers were selected. The evaluation units were overlaid, analyzed and verified, and the results show that the geological disaster susceptibility in Huining County can be divided into three zones of high easy-happening area, medium easy-happening area and low easy-happening area. It is considered that the evaluation results are in good agreement with the actual situation of geological disasters, with the expert evaluation method to examine the geological disaster susceptibility results. The evaluation results can provide some reference for the comprehensive prevention and treatment of geological disasters in Huining County. |
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| Keywords: | GIS geological disasters susceptibility zoning Huining County |
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