安振振¹, 李广雪¹, 马妍妍¹, 徐继尚¹, 丁 咚¹, 张 洋¹, 闵建雄¹, 王丽艳¹
中国海洋大学 海洋地球科学学院, 海底科学与探测技术教育部重点实验室

摘要:
为探究珊瑚礁稳定性的研究现状, 对影响礁体稳定性的诸多因素如礁体结构、地形地貌、波浪、潮汐、潮流、风诸如热带气旋和风暴、海流等进行总结, 结果表明以上诸多因素可在不同程度上决定或影响礁体稳定性。同时指出现阶段礁体稳定性研究所需注意的问题, 其一是涉及珊瑚礁地质稳定性的礁体结构、地貌形态的研究尚少, 需合理利用多波束测深仪、高分辨率多道地震探测系统、钻探及AUV、三维实时声学成像声呐技术获取礁体地形、地层及剖面形态, 并借助GIS技术对滑坡等失稳地带进行圈定, 其二是潟湖区、礁体边坡等区域的稳定性研究缺乏, 需引入极限平衡法评估礁体边坡、泻湖等区域的稳定性, 且需考虑波浪、潮汐引入的孔隙水压力、渗流力的影响。通过综述礁体稳定性研究现状及未来礁体稳定性研究的方向的展望, 以期为珊瑚礁体上的工程建设及未来的珊瑚礁地质稳定性研究提供些许启示。
关键词:珊瑚礁浅地层结构地质稳定性水动力条件
DOI：10.11759/hykx20170119002
分类号:
基金项目:中国地质调查局大陆架科学钻探项目(GZH201100202)

Research on coral reefal geological stability
AN Zhen-zhen,LI Guang-xue,MA Yan-yan,XU Ji-shang,DING Dong,ZHANG Yang,MIN Jian-xiong,WANG Li-yan
Abstract:
To understand the research situation of the coral reefal geological stability, we briefly describe the sub-bottom structure of coral reefs and the factors that can influence sediment transport, topography, and landforms in the coral reef, such as reefal structure, topographic and geomorphic features, wave, tide, tidal current, wind (including tropical cyclone and storm), and ocean currents, which consequently affect the reefal geological stability. This article also presents the problems of reefal geology stability. Considering the studies on the profile structure, topography, and landforms of the coral reef, which are closely relate to the reefal geology stability, we present suitable methods for detecting the solid shape and stratum structure of the reef: multi-beam echo sounder, highresolution multichannel seismic exploration system, drilling, autonomous underwater data acquisition technology, and high-resolution real-time 3D sonar. With the data on the solid shape and stratum structure, we define the range of unstable zone with the advanced geographic information system (GIS). Furthermore, few studies were carried out on the stability of reef slope, inner reef flat, and slope of lagoon, which can be evaluated by the limit equilibrium method. In this evaluation, the pore water pressure and seepage force of the reefal seabed, which are caused by waves and tides, must be considered. The aim of the article is to provide references to coral reef researchers.
Key words:coral reefshallow stratum structuregeology stabilityhydrodynamic conditions





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