相山铀矿田地貌形体DEM模型应用分析  

Topographic Analysis of Xiangshan Uranium Field on DEM

作　　者：张万良[1] 张杰林[2] 刘德长[2] 张静波[2] 叶发旺[2] 

机构地区：[1]核工业270研究所,南昌330200 [2]核工业北京地质研究院,北京100029

出　　处：《地球信息科学》2007年第4期34-39,共6页Geo-information Science

摘　　要：数字高程模型(DEM)是对地球表面地形地貌的数字表达、模拟,DEM在地质学中得以广泛的应用。相山DEM由1∶5万地形图数字化而成,基于DEM的面积-高程曲线的计算,表明相山地区地表总体侵蚀严重,但由于组成地表物质的岩性差异和地质构造活动强度不同,侵蚀程度不均匀。铀矿床矿点多出现在高程变异系数不是太小也不是太大的区域,即铀矿床矿点的分布与地表侵蚀程度有关。Digital elevation moded （DEM） is a digital expression of landform surface,and its application in geology has become more and more extensive. Xiangshan DEM is derived from the relief map of 1∶50000. The area-elevation curve shows that the earth′s surface come through heavy erosion. But the erosion degree is unbalanced,because of the different lithologies and varying intensities of tectonic activities of geology in the study area. The uranium deposits and dots are mainly distributed in the transition area with intermediate elevation variation coefficient,namely,the presence of the uranium deposits and dots is related with the erosion degree of the earth′s surface.

关 键 词：DEM 岩石地貌 侵蚀程度 相山铀矿田 

分 类 号：P619.14[天文地球—矿床学]