CAJ | 학술논문

崩塌、滑坡、泥石流是震后最常见的三类次生地质灾害，震后灾区崩塌、滑坡极度发育，同时为泥石流灾害提供丰富的物源，极大的危害人类生产生活。文章结合 TM 影像和 DEM 地形数据，通过决策树模型建立了汶川县震后崩塌滑坡遥感判识标志库，自动提取了该县2009年、2010年、2013年3期崩塌滑坡灾害体，分类精度明显优于最大似然监督分类法。结果表明该县崩塌滑坡灾害体主要集中分布在断裂带沿线5km范围内、海拔1200m～3000m内的中高山中上部位、坡度25°～70°之间的中陡坡地带。该自动提取模型方法解决了低分辨影像提取地质灾害体方法单一、精度不高、效果不佳的问题，且模型可拓性强，适用于地质灾害体自动提取。
붕탑、활파、니석류시진후최상견적삼류차생지질재해，진후재구붕탑、활파겁도발육，동시위니석류재해제공봉부적물원，겁대적위해인류생산생활。문장결합 TM 영상화 DEM 지형수거，통과결책수모형건립료문천현진후붕탑활파요감판식표지고，자동제취료해현2009년、2010년、2013년3기붕탑활파재해체，분류정도명현우우최대사연감독분류법。결과표명해현붕탑활파재해체주요집중분포재단렬대연선5km범위내、해발1200m～3000m내적중고산중상부위、파도25°～70°지간적중두파지대。해자동제취모형방법해결료저분변영상제취지질재해체방법단일、정도불고、효과불가적문제，차모형가탁성강，괄용우지질재해체자동제취。
Collapse, landslide and debris flow are the three most common types of secondary geological disasters, which are very common in the earthquake disaster area. Based on TM image and DEM terrain data, the paper established the remote sensing identification mark database of landslide in Wenchuan County in 2009, 2010 and 2013. The classification accuracy was better than the maximum likelihood supervised classification method. The results show that the landslide hazard in the county is mainly concentrated in the middle and steep slope of the middle and upper part of the fault zone, which is located in the middle and upper part of the middle and upper part of the middle and high mountain ranges from 25 degrees to 70 degrees above the middle part of the fault zone along the 3000m range. The method of automatic extraction of the model is a simple, accurate and effective method for the extraction of geological hazard in low resolution images, and the model can be applied to geological hazard body.