“6·28”关岭滑坡特大地质灾害应急遥感调查研究

Emergency Remote Sensing Research on Superlarge Geological Disasters Caused by "6·28" Guanling Landslide

2010年6月28日14时30分,贵州关岭县岗乌镇大寨村因连续强降雨引发山体滑坡,中国国土资源航空物探遥感中心(简称航遥中心)立即收集了滑坡前卫星遥感数据,并于6月30日成功获取了滑坡区0.08 m分辨率的航摄数据。作者利用滑坡前后的高分辨率影像数据和数字高程模型,采用数字滑坡技术分别对该滑坡的影响范围、滑动方向、规模及灾情进行了定量解译,得出滑坡灾害影响区面积、滑塌体规模、碎屑堆积规模、损毁耕地面积及掩埋房屋数量等,并在第一时间为前线救灾治理工作提供了丰富而准确的调查数据,确定关岭滑坡为一起罕见的滑坡碎屑流复合型特大灾害,这一灾害在贵州历史上未有过记载。

At 14：30 on June 28, 2010, continuous heavy rainfall caused enormous landslides at Gangwu of Guanling County, Guizhou Province. China Aero Geophysical Survey and Remote Sensing Center for Land and Resources immediately collected pre -landslide correlative satellite data. At the same time aerial data for the landslide whose resolution was 0.08m were obtained successfully on June 30. Using these high - resolution image data and digital elevation model, the authors adopted digital landslide technique to interpret the landslide information from the quantitative point of view on influence sphere, sliding direction, size, casualty loss and so on. At last, a series of quantitative data such as landslide area, slump scale, debris accumulation scale, damaged plantation area and buried building number, were obtained in time. The results can provide timely abundant and accurate data for front - line succor and disaster management. Based on these data, the authors hold that the Guanling before in landslide should be regarded as a rare large complex debris flow landslide, which had never happened Guizhou Province.