海洋地球物理探测在海岸工程建设中的应用——以曹妃甸港为例  

Offshore Geophysical Prospecting on Coastal Engineering:A Case Study in Caofeidian

作　　者：刘怀山[1,2] 王文秋 尹燕欣 LIU Huai-shan;WANG Wen-qiu;YIN Yan-xin(College of Marine Geosciences,Ocean University of China,Qingdao 266100,China;Laboratory for Marine Mineral Resources,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China)

机构地区：[1]中国海洋大学海洋地球科学学院,山东青岛266100 [2]青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛266237

出　　处：《海岸工程》2022年第4期313-327,共15页Coastal Engineering

基　　金：国家自然科学基金项目——近海底地震海洋学立体探测与成像基础研究(91958206)。

摘　　要：海岸带复杂地形地貌和海底表层沉积,特别是发育的浅层气、断层、冲沟等严重影响了海岸工程建设,因此海底地形地貌及浅表层海底地层的精细结构是海岸工程地质勘察的重点内容。针对该问题,本文从海岸工程地球物理调查技术出发,基于海洋浅层高精度地球物理探测研究海底局部构造的演化机制及其对海岸工程建设的影响,形成了一套立体化、高分辨率海水与近海底地层结构探测系统和成像方法,实现了海洋水体结构、海底地形地貌、海底沉积物结构以及特殊地质构造的精细成像。该技术方法成功地应用在曹妃甸港浅海工程地质稳定性评价中,效果良好。研究表明,浅层高分辨率地震探测技术方法可用于研究海底复杂地形结构、浅层气、海底断层成因及稳定性,有效地支撑服务海岸工程建设。Complex seabed geomorphology and the fine structure of marine sediments is a key issue for coastal engineering.It is necessary to collect this useful information in engineering geological investigation for coastal engineering.This paper proposed a set of marine geophysical technology to image water body,seabed geomorphology,marine sediments and unique geological structure with high resolution,on the basis of marine shallow seismic prospecting with high precision.It has been performed in engineering geological investigation of Caofeidian Port,successfully.And the result provides high-resolution images of water body,seabed geomorphology,shallow gas below seabed,submarine faults and landslide.All of these images play an important role in coastal engineering for Caofeidian Port.This successful application indicates this technology is an effective method for geological hazard assessment in coastal engineering.

关 键 词：地球物理探测 海岸工程建设 海底地层结构 地震海洋学 

分 类 号：P714.8[天文地球—海洋科学] P753[交通运输工程—港口、海岸及近海工程]