基于等高线的水系沉积物采样点自动布设方法  

Contour-based automatic layout method of stream sediment sampling sites

作　　者：韩治虹 黄帅[1] 花卫华[1] 高艳芳[2] Han Zhihong;Huang Shuai;Hua Weihua;Gao Yanfang(Faculty of Information Engineering,China University of Geosciences（Wuhan）,Wuhan 430074,Hubei,China;Instituteof Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065099,Hebei,China)

机构地区：[1]中国地质大学(武汉)信息工程学院,湖北武汉430074 [2]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065099

出　　处：《地质学刊》2018年第3期470-475,共6页Journal of Geology

基　　金：国家重点研发计划"深地资源勘查开采"项目"深部资源预测系统技术研究与示范"子项目"深部矿产三维可视化预测评价软件系统研发"(2017YFC0601501);"一体化系统模块的开发与完善"(IGGEW2018035)

摘　　要：以往水系的勾绘、采样点位的布设工作均由人工在地形底图上手工完成,工作量大,且影响化探工作进度。通过规则网格的数字高程模型生成水系网,实现了精确度较高的水系网提取算法。该算法先按照水系级别和水系长度进行样点初布,然后检测样点的数量及密度是否达到要求,再根据布样要求进行样点的补充与修改,据此研究水系沉积物采样自动化布置方法,实现基于等高线的水系沉积物采样点的自动布设,提高了化探采样工作效率。In the past, the mapping of drainage systems and the layout of sampling sites have been done manually on topographicmaps, which are arduous and affect the progress of geochemical exploration. This paper uses the digital elevation model of the regulargrid to generate the drainage network, and thus to implement drainage network extraction algorithm of higher accuracy. This algorithmfirstly conducts a preliminary layout of the drainage network sites based on their grade and length, then ensures that the number anddensity of the sites meet related standards, and modifies and supplements the layout according to standards of sampling arrangement.Based on this, the automatic arrangement method for the sampling of the stream sediment is studied, and the automatic sampling of thestream sediment based on the contour lines is realized for the first time, thus improving the efficiency of geochemical sampling.

关 键 词：水系沉积物测量 数字高程模型 水系提取 自动布设 河北承德 

分 类 号：P632.3[天文地球—地质矿产勘探] S159-3[天文地球—地质学]