In lower mountainous area, cut/fill earthwork has been massive for construction, and which will encounter the geological hazards problem. This paper intrudes the method extracted land form information based on EDM, and choosing slope, length of slope and height of slope factors to evaluate land slope.%评估区位于贵东北低山丘陵地带,大规模的夷平填挖工程,将产生大宗的不稳定切破,加大诱发崩塌、滑坡地质灾害的可能性。本文以数字高程模型(DEM)以及地形地貌学的基本理论为基础,主要选取坡度、坡长、坡高及坡向几个重要控制因子,介绍了DEM的提取方法,并结合工程地质岩组特征对研究区内滑坡危险性进行评价分析。
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