A TWO DIMENSIONAL COUPLED MODEL FOR SUBMARINE DEBRIS FLOW AND ITS INTERACTION WITH SUBSEA INSTALLATIONS
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How to Cite

Das, H. (2020). A TWO DIMENSIONAL COUPLED MODEL FOR SUBMARINE DEBRIS FLOW AND ITS INTERACTION WITH SUBSEA INSTALLATIONS. Coastal Engineering Proceedings, (36v), sediment.39. https://doi.org/10.9753/icce.v36v.sediment.39

Abstract

Debris flow are gravity driven mass flows which can create catastrophic geohazards along their overriding paths. Driven by the gravity, debris flow can travel long distances on favorable continental slopes. Their frontal velocity can be very high which may pose significant threat to offshore installations such as subsea pipelines, communication cables and offshore platforms (Yuan et. al., 2012). Therefore, understanding their dynamic behavior is critical in order to mitigate potential geohazards. The specific objective of this paper is to present a coupled two dimensional numerical model that characterizes debris flow movement, rheological properties and its interaction with subsea installations. For demonstration purpose, the coupled model has been applied to schematized settings representing generalized continental shelves with canyons.

Recorded Presentation from the vICCE (YouTube Link):
https://doi.org/10.9753/icce.v36v.sediment.39
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References

De Blasio, F.V., Elverhøi, A., Issler, D., Harbitz, C.B., Bryn, P., and Lien, R. (2004a): Flow Models of Natural Debris Flows Originating from Over Consolidated Clay Materials, Marine Geology, vol. 213, pp. 439–455.

Yuan, F., Wang, L., Guo, Z., and Shi, R. (2012): A Refined Analytical Model for Landslide or Debris Flow Impact on Pipelines. Part I: Surface Pipelines, Applied Ocean Research, vol. 35, pp. 95-104.

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