辽东湾北部浅海区海洋工程地质特征

Characteristics of Marine Engineering Geology in the Northern Liaodong Bay Shallow Water Area

通过对浅地层剖面仪、侧扫声纳和海底取样等实测资料的详细分析,揭示了辽东湾北部浅海区的自然地质状况和复杂的海洋工程地质特征。该海区海底地形地貌较为复杂,存在海底冲刷深槽、埋藏古河道、浅层气、潮流沙脊与潮沟、埋藏古陡坡、软弱土层及可能的砂土液化层等潜在灾害地质因素,对海上构筑物存在直接或潜在的危险性,应引起高度重视。

It is shown from the analysis results of subbottom profiler, side scan sonar and bottom sample data that the northern Liaodong Bay shallow water area has advantageous nearshore and shallow water conditions and complex marine engineering geology characteristics. The bottom topography and geomorphology in the area are complex, and there are many geologic hazard factors including submarine deep scour channel, buried ancient river course, shallow gas formation, tidal sand ridge and creek, buried ancient steep slope and possible soil liquefaction, which will constitute direct or potential hazards to the marine structures, so attention should be paid to these geologic hazard factors.