【作者】 赵洪鹏；

【导师】 亓发庆；

【作者基本信息】 国家海洋局第一海洋研究所 ， 海洋地质， 2011， 硕士

【摘要】 通过分析本区域进行的大量高分辨率浅地层剖面调查资料,结合地质钻探资料,对研究区内浅埋古河道的声学地层反射特征,沉积特征,以及规模、区域分布和埋藏深度做了描述和研究,对浅埋古河道的形成与区域海平面变化关系进行了阐述。辽东湾顶部浅海区蕴藏着丰富的油气资源,具有广阔的开发前景。浅埋古河道作为该区分布较广的潜在灾害地质体,对油气资源开发具有重要的影响。海洋灾害地质的形成与发展,与其所处的自然环境密切相关。本文在搜集了本区域进行的大量环境,地质调查资料的基础上,从水文气象、地形地貌、沉积环境、声学地层、工程地质与构造、地震等各个方面对研究区各海洋工程环境要素进行了分析、总结,揭示了研究区海洋工程环境的一般特征。在此基础上,结合浅埋古河道的特征,对其在工程上可能产生的地质灾害进行了评价。更多还原

【Abstract】 Through studies on the high resolution subbottom profiles,connected with shallow engineering drilling,this paper describes and gives evidence to the buried paleo-channels’seismic facies characteristics,sediment structure,scale,regional distribution,buried depth and development,and further,points out the relationship between development of the buried paleo-channels and the regional sea-level changes.There are abundant oil and gas resources at the shallow-sea area of north Liaodong Bay,which has great potential development value. the buried paleo-channels are widespread in this area,as a geologic factor of the unstable seafloor and one of the latent disastrous types,which have a great effect on the development of oil and gas resources.The forming and developing of marine geohazard is closely related to the environment.On the basis of collecting abundant environment and geological investigation material,this paper reveals the marine engineering environment characteristics of the study area from the next aspecs,such as hydrometeor, topography and geomorphy,deposited environment,acoustic atratigraphy,engineering geology and tectonic character etc. and then combined with the characteristics of the buried paleo-channels, the engineering geological disasters are evaluated, which may be related to the buried paleo-channels.更多还原