23/12/2021

Landslide mapping: assessing geological hazards using drones

When a 14 meter fissure appeared on a hillside in the Georgian capital, geological experts deployed the senseFly eBee X drone to study the landslide and help assess reinforcement operations with an aerial survey of the high-risk area.

Project Details

Type of mission – Disaster managementOutputs – Orthomosaic, DSM
Area – 2,523 km/ 252 ha / 623 acTotal images – 889
Drone – eBee X with Aeria XProcessing time – 4h30
Accuracy – 1.6 cm / 0.6 inProcessing software – PIX4Dmapper
RTK/PPK – YesLocation – Tbilisi (Georgia)
Flights needed – 2Data provided by – Vitali Machavariani, Georgian National Environmental Agency

In March 2021 the earth broke open on the Vashlijvari slope, a hillside located near a road connecting two residential areas of Tbilisi, Georgia’s capital. The colossal size of the cracking – 14 meters deep and around half a million cubic meters of torn landmass – alerted experts to respond quickly in order to prevent the width from increasing and the slope from sliding off completely.