Dajiang UAV Emergency Rescue Alliance Operation
Since June, South China has experienced several rounds of heavy rainfall. The rainstorm is widely distributed, multi-point outbreak and high local intensity, causing dangerous situations such as waterlogging, landslide and overtopping, and the flood control situation is extremely severe.The emergency rescue alliance composed of DJI Dajiang industrial application and partners responded quickly, served local flood control and rescue teams, helped to improve the efficiency of emergency rescue and protect the safety of people's lives and property in the flood season.The duration of dam patrol is long, the map is far away, and continuous monitoring is carried out in rainstormAffected by the continuous increase of water from the upstream and the jacking of the Yangtze River flood, the water level of Dongting Lake continued to rise. On July 4, the water level of Chenglingji station, the landmark hydrological station of Dongting Lake, exceeded the warning. Since then, the water level of Dongting Lake has exceeded the warning."As a 'barometer' of the water situation of the Dongting Lake and the Yangtze River Basin, Chenglingji station exceeds the guaranteed water level, which means that the flood control situation of the whole Dongting Lake area has entered a very urgent state." the Yangtze Holly of the Ministry of water situation and information technology of Hunan hydrological Center said.In order to better monitor the water situation in the flood season, from July 5, the water conservancy department of Hunan Province began to use Dajiang UAV to carry out flood control inspection on the reach of Dongting Lake.Dajiang longitude and latitude M300 RTK took off from Qilishan hydrological station in Chenglingji, Yueyang, and met the Yangtze River about 7km along Dongting Hubei. With the help of the map transmission system as far as 15km, the UAV continues to stably transmit images for the flood control and drought relief command center of Hunan Province, helping flood control experts master the situation at the first time.In addition, the longitude latitude M300 RTK has the protection level against heavy rain, and can operate continuously even in the rain. In addition, it has the advantages of long endurance and battery thermal replacement, and realizes all-weather rotation monitoring during the flood season.The rapid inspection of flood control facilities, revetments, levees and other contents of the target segment by UAV has expanded the vision of the original manual inspection. Yueyang City will also start UAV flight inspection on the 1068 km first-line flood control embankment of Dongting Lake and the Yangtze River trunk line.At present, several groups of UAV teams have gone to Yueyang and Yiyang to track and monitor the lake potential of Dongting Lake, provide information support for flood prevention and ensure the safe transit of Dongting Lake flood.The landslide rescue 3D model calculates the landslide area and locks the rescue areaOn July 8, affected by continuous heavy rainfall, a sudden landslide triggered a debris flow in Shiban village, Songtao Autonomous County, Guizhou Province. The whole village suddenly turned into a flood beach, and some villagers were trapped. After receiving the rescue notice, Guizhou Skyway technology, an industrial application partner of DJI Dajiang, acted quickly and rushed to the scene to cooperate with the rescue at the first time.Due to the huge destructive force of landslides, local houses have been washed away and buried by soil. Only by comparing the local pre disaster and post disaster images can we determine the approximate location of the buried houses and look for the trapped people.The traditional solution is to understand the whole picture of the disaster area through satellite remote sensing. However, the timeliness and accuracy of satellite map are low. At the same time, the weather conditions of heavy rainfall and cloudy fog in this disaster will also lead to the poor effect of satellite images.The rescue team thought of Dajiang spirit 4 RTK aerial survey UAV for the first time - it has a centimeter level positioning system. Rescuers imported the images collected by spirit 4 RTK into Dajiang wisdom map and quickly obtained the first three-dimensional model of the disaster core area.According to the model, the command center analyzed four key rescue areas, and calculated the local landslide area and landslide earthwork.In addition, in the rescue process, the front-line rescue team continued to transmit the images taken by UAVs back to the command center in real time, so as to facilitate the command center to monitor the changes in the landslide area and adjust the rescue strategy in time. While efficiently looking for trapped people, it also ensures the safety of rescue workers.Quickly find out the disaster situation due to heavy rainfall and waterloggingGuangdong Province, which has experienced several rounds of heavy rainfall, recently encountered the strongest "dragon boat water" in recent 15 years, and the precipitation in many places broke through the historical extreme value. Guangdong Provincial three prevention office and Guangdong Provincial Emergency Management Department sent emergency support working group and emergency communication support group to carry Dajiang UAV to the rescue sites of Huadu, Qingyuan Fogang and Huizhou Longmen."When we arrived at fogangluo cave in Qingyuan, the water level in a village had been more than 2 meters, overflowing the first floor of the houses. The villagers were hiding upstairs. The village had been cut off from water, food and electricity." said the Guangdong Chengjin science and technology operator in charge of flight operations at the scene.In order to find out the disaster, the fire commanders and fighters quickly took off the Dajiang "Yu" 2 industry version UAV they carried with them. The UAV collects the panorama of the affected area with one click to truly restore the disaster scene.During the rescue, the fire commanders and fighters used the Dajiang longitude and latitude M300 RTK to continuously shoot the disaster situation on the scene in the rainstorm, and transmitted the captured picture back to the command center through the video live broadcast platform.Timely on-site first-hand information provides an important basis for the command center to realize accurate judgment, accurate organization, accurate coordination and accurate command of emergency rescue, so as to timely evacuate the masses, avoid casualties, reduce property losses and achieve prevention first.Intelligent flood control and scientific disaster reduction. With the unique advantages of high-altitude vision, as well as many strengths such as flexibility, reliability and intelligence, UAVs are providing efficient tools for rescue workers on the front line. DJI Dajiang industry application said that its emergency rescue alliance with national partners will also stick to the front line, go all out to fight the battle of flood control and disaster reduction, and build a "new dam" for scientific and technological flood control and disaster reduction in the affected areas.