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利用1986～1992年珠江口盆地灾害地质与工程地质调查、2000～2001年亚太光缆网络系统路由调查等获得的资料,对海底浅层气的分布与赋存特征作了分析研究,认为海底浅层气主要分布于河口与陆架地区,以层状、团(块)状、高压气囊及气底辟等4种形态赋存于海底,在侧扫声纳、浅地层剖面等图像中有4种主要识别标志。海底浅层气常常会给基础工程施工带来严重影响,因此,对其给工程带来的影响及危害应予以足够的重视。
Based on the data of the geology and engineering geological survey of the Pearl River Mouth Basin in 1986-1992 and the investigation of the routing of Asia-Pacific cable networks from 2000 to 2001, the distribution and occurrence characteristics of the shallow gas in the seafloor are analyzed and analyzed. The gas is mainly distributed in the estuary and the continental shelf. The gas is mainly distributed in the sea floor in the form of stratified, group (block), high-pressure airbag and gas diapir. There are four major types of images in side-scan sonar and shallow stratum profile Identification mark. Shallow depths of the sea floor will often have a serious impact on the construction of the foundation project. Therefore, the impacts and hazards they cause to the project should be given sufficient attention.