基于坡度特征的花岗岩风化程度划分方法研究  

Classification of granite weathering degree based on slope characteristics

作　　者：李霞[1,2] 于德浩 陈伟涛[1] 杨清雷 徐兴宇 胡畔 王李 

机构地区：[1]中国地质大学(武汉)计算机学院,武汉430074 [2]沈阳第二工程科研设计所,沈阳110162

出　　处：《中国地质调查》2017年第3期10-16,共7页Geological Survey of China

基　　金：中国地质调查局"全国边海防地区基础地质遥感调查(编号:DD20160076)";国土资源部航空地球物理与遥感地质重点实验室"航遥青年创新基金(编号:2016YFL14;2013YFL12)";国家"863"计划项目"缺水地区地下水勘查与污染控制技术(编号:2012AA062601)"项目联合资助

摘　　要：针对目前遥感技术手段难以快速划分岩石风化程度的问题,以花岗岩为研究对象,通过分析风化程度与坡度的耦合关系,提出了一种基于坡度特征的花岗岩风化程度划分方法。该方法首先利用卫星遥感数据解译区域地层岩性,通过立体像提取区域坡度信息;然后对坡度分级并统计花岗岩地质体内各级坡度的面积百分比;最后根据坡度分级特征曲线判断花岗岩风化程度。野外验证表明,该方法可以准确划分花岗岩风化程度,可为工程设计和施工作业提供参考。For solving the problem of quick dividing rock weathering degree by present remote sensing technology, a method for the classification of granite weathering degree based on slope characteristics was proposed by analy-zing the coupling relationship between the granite weathering degree and the slope. Firstly, regional stratum lithol-ogy was interpreted by remote sensing data, and regional slope information was extracted by stereoscopic images. Secondly, the slope was divided into five grades, and the area percentages of different slopes in granite area was counted. Lastly, according to the characteristic curves of slope grade, the granite weathering degree could be clas-sified .According to field verification, this method can correctly classify the granite weathering degree, which pro-vides reference for engineering design and construction work.

关 键 词：花岗岩 风化程度 坡度特征 遥感技术 

分 类 号：P512.1[天文地球—地质学]