莱州湾近岸海底探测应用研究  

Application Research of Nearshore Seabed Detections in the Laizhou Bay

作　　者：宋玉龙 刘同庆 SONG Yulong;LIU Tongqing(Geophysical Survey Team of Shandong Bureau of Coal Geology,Jinan 250104,China;The 5th Exploration Team,Shandong Provincial Coalfield Geological Bureau Coal Mining,Jinan 250104,China)

机构地区：[1]山东省煤田地质局物探测量队,山东济南250104 [2]山东省煤田地质局第五勘探队,山东济南250104

出　　处：《海岸工程》2023年第2期197-206,共10页Coastal Engineering

摘　　要：近海岸海底环境探测复杂,一直是探测的难点区域。为精准探测近海岸附近的抛石、人工鱼礁、养殖区以及海底浅地层断裂潜伏位置,本文通过侧扫声呐技术、浅地层剖面技术、单道地震技术在莱州湾探测中优化探测参数,分析干扰因素,总结探测结果。分析3种技术在莱州湾工程探测的研究结果表明:侧扫声呐技术在目标区水深12 m左右、75 m单侧扫描宽度探测海底地貌及障碍物,具有极高的分辨率和信噪比;浅地层剖面技术在水下单位发射频率10000 Hz、下潜深度1.5 m时探测海底浅层地质信息敏感度高;单道地震技术在激发能量900 J、激发频率100 Hz时探测相对较深、较复杂的海底地层情况效果好。3种技术能灵活有效、准确地探测出海底及海底地层地貌,可为绿色海洋发展提供直接有效的依据。The seabed environment near the coast is difficult to detect because of its complexity.In order to detect accurately the rock rip-raps,the artificial reefs,the seawater aquaculture areas and the latent positions of seabed shallow stratum faults in the coastal area,side-scan sonar technology,shallow stratum profiling technology and single-channel seismic technology are used for detecting the seabed environment in the Laizhou Bay,during which the detection parameters are optimized,the interference factors are analyzed and the detection results are summarized.The research results of the three technologies in Laizhou Bay project detection show that:the side-scan sonar technology has extremely high resolution and signal-to-noise ratio in detecting seabed topography and obstacles with water depth of about 12 m and a unilateral scanning width of 75 m in the target area;the shallow stratum profiling technology has high sensitivity to detect the shallow geological information of the seabed when the underwater unit emission frequency is 10000 Hz and the diving depth is 1.5 m;the single-channel seismic technology has a good effect on detecting relatively deep and complex seabed strata when the excitation energy is 900 J and the excitation frequency is 100 Hz.These three technologies can flexibly,effectively and accurately detect the seafloor stratigraphy and geomorphology and can also provide a direct and effective basis for the development of a green ocean.

关 键 词：侧扫声呐 浅地层剖面 单道地震 海底探测 人工鱼礁 

分 类 号：P319[天文地球—固体地球物理学]