【摘要】 海底滑坡是大陆坡一种常见的沉积作用过程。这种沉积作用包括滑塌和碎屑流等重力流作用过程,它能将沉积物运移数百公里,严重危害深水油气开发平台、油气管线、海底电缆等设施;同时,还可能导致巨大破坏性的海啸。虽然导致海底滑坡的因素很多,但近年来发现海底滑坡的触发机制可能与地震作用和海底天然气水合物的分解关系密切。随着深水油田的开发和深海工程的日益增多,这种地质作用越来越引起学术界和工业界的重视。在介绍大陆边缘深水区海底滑坡的构成、识别和触发机制的基础上,提出海底滑坡的地质风险评估方法。更多还原

【Abstract】 Submarine landslide is usually a kind of sedimentary process,which includes landslide and debris flow,and can transport sediment over several hundred kilometers.Therefore it leads to large scale slope instability,and makes great threats to deepwater oil platform,pipeline and seafloor cable and so on.Moreover,slope instability can probably cause destructive tsunami.Although various factors can trigger submarine slide,but earthquake and dissolution of gas hydrate have close relationship with formation of submarine slide.With the exploitation of deepwater oil field and the increasing development of abysmal sea project,more and more emphases are laid on the geologic process by people of the academia and industry circles.In this paper,we introduce the slide structure,identification criteria,triggering mechanism of landslide in the deepwater continental margin,and put forward the risk evaluation methods of submarine landslide.更多还原