Publications / 2022 Proceedings of the 39th ISARC, Bogotá, Colombia

Towards the development of a digital twin for subsoil monitoring and stability against overturning of a mobile drilling rig

Francisco Williams Riquer, Duy Anh Dao and Jürgen Grabe
Pages 207-214 (2022 Proceedings of the 39th ISARC, Bogotá, Colombia, ISBN 978-952-69524-2-0, ISSN 2413-5844)

Mobile drilling rigs are particularly susceptible to over-turning due to the high location of their centre of mass. In some cases, overturning occurs due to a failure in the subsoil. Until now, machine operators are solely responsible for mon-itoring the machines' stability, and assessment of dangerous conditions is based mainly on experience. This investiga-tion aims to set the grounds for elaborating a digital twin to online monitor the machine's stability to prevent overturn-ing. Stress transmitted to the ground, tracks' settlement, and bearing capacity are calculated from a multibody simulation (MBS) and following existing standards. Furthermore, soil-dependent stability diagrams are generated to describe the stable location of the machine's centre of mass and predict soil failure. Results offer the possibility to function as an online alarm system running parallel to the machine's oper-ation and alerting the operator about dangerous conditions.

Keywords: Digital Twin (DT); Multibody simulations (MBS); Stabil-ity of mobile drilling rigs; Settlement prediction; Monitoring of bearing capacity