This paper is aimed at presenting a semiautomatic procedure that, coupled with conventional methods, can be useful for a prompt definition of rock fall susceptibility scenarios with civil protection purposes. Due to its landscape morphology (steep slopes and narrow valley), regional seismicity, and rock mass characteristics, the Nera Valley (Valnerina, Umbria Region, Italy) is highly prone to rock falls. In order to cover a wide range of features and investigate the main advantages and drawbacks of the proposed approach, data collection was carried out in three different slopes by means of terrestrial laser scanning (TLS) and geomechanical surveys. Detailed three-dimensional (3D) terrain models were reconstructed to obtain the geometry of the most unstable blocks, to define the position of the main rock fall source areas, and to precisely distinguish the outcropping materials and the position of the elements at risk for reliable runout analyses. Consequently, the proposed approach can positively support proper maintenance and land management programs both in ordinary and in emergency circumstances.

TXT-tool 4.039-3.1: Terrestrial laser scanner and geomechanical surveys for the rapid evaluation of rock fall susceptibility scenarios

Morelli S.;
2018

Abstract

This paper is aimed at presenting a semiautomatic procedure that, coupled with conventional methods, can be useful for a prompt definition of rock fall susceptibility scenarios with civil protection purposes. Due to its landscape morphology (steep slopes and narrow valley), regional seismicity, and rock mass characteristics, the Nera Valley (Valnerina, Umbria Region, Italy) is highly prone to rock falls. In order to cover a wide range of features and investigate the main advantages and drawbacks of the proposed approach, data collection was carried out in three different slopes by means of terrestrial laser scanning (TLS) and geomechanical surveys. Detailed three-dimensional (3D) terrain models were reconstructed to obtain the geometry of the most unstable blocks, to define the position of the main rock fall source areas, and to precisely distinguish the outcropping materials and the position of the elements at risk for reliable runout analyses. Consequently, the proposed approach can positively support proper maintenance and land management programs both in ordinary and in emergency circumstances.
2018
978-3-319-57776-0
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/2690137
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