基于地形坡度的场地分类方法在杭州市临安城区中硬、坚硬场地中的应用

The Application of Site Classification Method Based on Terrain Slope in the Medium-hard and Hard Sites in Lin'an Urban Area, Hangzhou

摘要: 选用浙江省杭州市临安城区作为试点区域，基于地形坡度、利用GIS平台对大区域尺度的工程场地分类方法在中小区域的中硬、坚硬场地分类工作中的应用展开研究。通过拟合前人研究数据初步给出地形坡度正切值与中国场地类型的对应关系，并利用收集的研究区域内勘察钻孔数据来验证该应用的可靠性。结果表明，基于地形坡度的场地划分方法在中小区域的Ⅰ类场地中的配准率达87.5%，Ⅱ类场地分类中的配准率为88.89%，具有很高的应用前景。

Abstract: The Lin'an urban area of Hangzhou City, Zhejiang Province was selected as the study area. Based on the topographical slope, the large-scale engineering site classification method of the GIS platform was used to study the application of the medium-hard and hard-site classification in small and medium-sized areas. The corresponding relationship between the terrain slope tangent value and the site type in China is initially given by fitting previous study data, and the reliability of the application is verified by using the collected survey borehole data in the research area. The results show that the registration rate of the site classification method based on terrain slope in the small and medium-sized areas is 87.5%, and the registration rate in the category II site classification is 88.89%, which has a high application prospect.