论文部分内容阅读
文章针对登封市地质环境条件、发育特征等特性,选取了灾害点密度、岩土体类型、断裂发育程度、地貌类型、坡度、降雨量、人类工程活动等7个地质灾害危险性评价因子,通过层次分析法确定评价因子权重,并采用专家系统法赋值,建立了该市地质灾害危险性评价模型。通过划分评价单元及利用危险性评价模型,基于Arcgis空间分析功能将该市地质灾害危险性分为低危险区、中危险区和高危险区。研究成果对相似地区地质灾害危险性的划分也提供了一定的借鉴意义。
In this paper, according to the geological environment conditions and development characteristics of Dengfeng City, seven geological disaster risk assessment factors such as point density, rock and soil types, degree of fracture development, topography, slope, rainfall, and human engineering activities were selected. Through the analytic hierarchy process to determine the weight of evaluation factors, and the use of expert system assignment, the establishment of the city’s geological disaster risk assessment model. By dividing the evaluation unit and using the risk assessment model, the risk of geological disasters in the city can be divided into low-hazard zone, medium-risk zone and high-risk zone based on Arcgis spatial analysis function. The research results also provide certain reference for the division of risk of geological disasters in similar areas.