摘要
不同于陆地滑坡,海底滑坡由于水动力条件这一特殊因素致使其难以观测,其致灾机理、失稳评价流程等也未形成标准。对海底失稳与致灾机理的深入研究,涉及海斗深渊的形成与演化、深水工程开发的商业利益、海洋地质灾害的预测及海洋工程的安全等诸多问题。海底失稳调查与评价流程分为地质调查、灾害机理分析、失稳评价3个方面,综合地球物理、海底原位监测、数值模拟、物理实验模拟等技术方法,形成从前期调查到后期评估的完整流程,对海底稳定性评价工作具有参考意义。
Unlike continental landslides,underwater landslides are hard to be observed due to the specific hydrodynamic conditions.So far there have been no standards and guidelines available for the procedures on disaster-causing mechanism studies and instability assessment,which involves not only the in-depth study of seabed instability,but also the formation and evolution of buttle and abyss,deep sea project development,business interests,marine geological disaster forecast,safety of the marine engineering and constructions,and other problems.With the rapid progress in China's marine scientific survey and various submarine projects,great achievements have been made by China in the past decades,in particular in the following three aspects:marine geological survey,disaster mechanism analysis and instability assessment.By integrating geophysical,in-situ seabed monitoring,numerical simulation,physical experiment simulation and other techniques,a complete process from early investigation to late evaluation is preliminarily presented in this paper,which is critical important for seabed stability assessment indeed.
作者
司少文
王大伟
贺惠忠
孙悦
孙金
吴时国
SI Shaowen;WANG Dawei;HE Huizhong;SUN Yue;SUN Jin;WU Shiguo(Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;Institute of Deep-Sea Science and Engineering,Chinese Academy of Sciences,Sanya 572000,Hainan,China;University of Chinese Academy of Sciences,Beijing 100049,China;South China Sea Marine Survey and Technology Center,State Oceanic Administration,Guangzhou 510310,China)
出处
《海洋地质前沿》
CSCD
北大核心
2021年第2期21-30,共10页
Marine Geology Frontiers
基金
国家自然科学基金“南海珠江口外海底峡谷内底形沉积结构与形成机理”(41666002)
国家自然科学基金“琼东南盆地深水重力流沉积旋回演化规律与形成机理”(41576049)
中国科学院前沿科学研究重点计划项目“深水海底峡谷-水道地貌特征及形成机理”(QYZDB-SSWSYS025)。
关键词
海底失稳
海洋工程地质调查
海底稳定性评价
海底滑坡
seabed instability
marine engineering geological survey
seabed stability evaluation
submarine landslide
