Permanent 3D Data Acquisition of Geotechnical Structures Using Web-Based Application of Terrestrial Lidar — Chances and Risks from an Engineering Geodetic Point of View

As part of the research project i²MON – ‘Integrated Impact MONitoring for the detection of ground and surface displacements caused by coal mining’ funded by HORIZON 2020 through the RFCS (Research Fund for Coal and Steel), the leading author, in collaboration with various European institutions, is working on the development of an integrated monitoring service for the identification and assessment of ground and slope movements associated with coalmining. The focus is on the correct integration (reliability, accuracy and integrity) of a long-range laser scanner into a continuous web-based monitoring system from an engineering geodetic point of view. The objective of this work is the development of an integrated monitoring service for the identification and evaluation of ground and slope movements in the context of coalmining, the prevention of natural hazards and protection of infrastructure. The focus is on the integration of a long-range laser scanner (1) into a continuous web-based monitoring system and (2) from an engineering geodetic point of view.

In the Vals Valley in Tyrol, a permanently installed RIEGL laser scanner was successfully operated and web-based in the area of a rockfall in the summer of 2020 and 2021. The data was visualised in near real-time on a monitoring platform. This paper will describe the practical benefits of this installation. In addition to the potential of automatic data acquisition, possibilities for multi-temporal analysis with regard to spatio-temporal changes will be discussed.