作者:汪祎勤 杨民杰
7月9日凌晨,大理州云龙县功果桥镇民主村发生泥石流地质灾害。灾情发生后,云南省测绘地理信息局立刻派出无人机航拍组,前往灾区执行应急航摄工作。
队伍出发途中,积极与先期到达灾区的救灾工作人员进行电话沟通,根据灾区地形特征、天气情况、以及大致飞行区域来制定工作方案,力争在短时间内安全有效地获取影像数据,为灾区救援指挥提供准确、可靠的数据资料。
在对灾前卫星影像图进行判读和分析后,发现灾区附近缺乏可供无人机起降的场地。航拍组另辟蹊径,在当天下午3点赶赴至永平县城内的一处工地并迅速开展飞行准备工作。经过近3小时的辛苦作业,获取了灾区10公里范围的影像资料,经检查照片质量完好。当晚,航拍组将数据进行拼接,并及时交付成果至救灾前线指挥部。
7月11日,应指挥部的要求,航拍组在县国土局的配合下,紧抓天气良好的时段,利用无人机快速对5月份曾发生过一次泥石流民主村下游的功过桥村和功果桥水电站的三个沟进行航拍,获取了20余平方公里的影像数据,为次生灾害及隐患排查提供了科学决策依据。
July 9th morning, the town of village democracy Dali Yunlong County occurrence ofdebris flow disasters. After the disaster, Yunnan Province Bureau of Surveying and mapping geographic information immediately sent the UAV aerial group, to the disaster area to implement the emergency aerial work.
The team on the way, actively and advance to relief workers affected by telephone communication, according to the disaster area terrain, weather conditions, and general flight region to a program of work, and strive to safely and effectively to obtain image data in a short period of time, for the disaster relief command to provide accurate, reliable data.
In the satellite image interpretation and analysis before and after the disaster,found near the disaster area lack for UAV landing site. Aerial group path, a site at 3 pm the same day to Yongping County within and to the rapid development of flightpreparation. After nearly 3 hours of hard work, the imaging data of 10 km area,after checking the photo quality. In the evening, aerial group data splicing, and timely delivery results to the disaster relief headquarters.
In July 11th, should command requirements, aerial group in cooperation with theCounty Land Bureau, clutching the weather good time, the UAV rapidly on May there had been a downstream main village debris refugee and Qiao Cun andGongguoqiao hydropower station three ditches for aerial photography, the image data of 20 square km, which provides a scientific decision basis for secondary disasters and troubleshooting. |