Estimation of burial depth for arctic offshore pipelines by an ice scour model

J. Ocean Eng. Technol. 1997;11(2):1-10.

빙쇄굴 모델에 의한 극지 해저 파이프라인의 매설깊이 산정

윤기영,최경식

현대중공업 해양사업본부,한국해양대학교 조선해양공학부

Keywords: Ice Scour Model, Arctic Offshore Pipelines, Burial Depth, Parametric Study

핵심용어: 빙쇄굴 모델, 극지 해저 파이프라인, 매설깊이, 매개변수 연구

Abstract

The interaction of ground ice features with underlying seabed is one of the major considerations in the design of Arctic pipeline systems. Regarding the development of offshore gas field near Sakhalin Island, which is an ice-infested area, in this paper an ice scour model to determine the burial depth of Arctic offshore pipeline is studied. Using a simplified ice-seabed interaction process, ice scour depth is easily estimated. This nonlinear numerical model can simulate the scouring process for various enviromental parameters such as ice mass, incoming velocity, soil strength. This study also deals with interaction forces during the scouring process in sloping seabed conditions and discusses the ice loads that are transmitted through the seabed soil.