基于GIS的库岸边坡危险性评价

RISK ASSESSMENT OF RESERVOIR BANK SLOPE BASED ON GIS

为解决大中型水库蓄水后库岸边坡危险性评价难题,本文以小湾水电站库区边坡为研究对象,充分发挥GIS平台优势,利用其空间分析与图形处理功能,结合层次分析法,通过ARCGIS软件将子专题地图进行叠加,建立了小湾水电站库区边坡危险性评价体系,实现了对小湾水电站库区潜在失稳岸坡的危险性评价工作,并将评价结果与实际库岸边坡塌岸分布信息进行了比较,结果表明,该评价体系可以客观、定量、准确的评价库区边坡稳定性程度。

In order to assess the risk of the reservoir bank slope after the large and medium-sized reservoirs have stored water,the paper regards the reservoir bankslope of Xiaowan Hydropower Station as the research object,giving full play to the advantages of GIS platform,using its function of spatial analysis and graphics processing,combining analytic hierarchy process（AHP）,superimposing on the sub-thematic maps through the ARCGIS software,established reservoir bank slope risk assessment system of the Xiaowan hydropower station,realized the risk assessment of the potential instability of thereservoir slope at Xiaowan Hydropower Station,and the evaluation results were compared with the information of actual bank slope collapse.The results showed that the evaluation system can be objective,quantitative and accurate on the assessment of the stability of the reservoir area.