發(fā)布時間：2019-07-23 19:02

【摘要】：海底淺層氣嚴重影響海底地層的結(jié)構(gòu)穩(wěn)定性,因此成為近海海洋工程的重要安全因素。近年來,通過地震手段在渤海海域發(fā)現(xiàn)了多處疑似淺層氣區(qū)域。該區(qū)域中的淺層氣蘊藏在海底以下地層或通過斷層從地層溢出到海水中。本文在渤海海域高分辨率地震勘探等物探調(diào)查資料基礎(chǔ)上,分析了渤海海域淺層氣地震反射特征。通過查閱相關(guān)資料,總結(jié)渤海海域淺層氣的一般成因。在將已發(fā)現(xiàn)的渤海海域淺層氣分布區(qū)域進行總結(jié)并繪制分布圖的同時,結(jié)合了渤海地質(zhì)演化以及沉積歷史,推測了渤海淺層氣集中分布區(qū)域的成因。最后討論了淺層氣對近海海洋工程的嚴重危害。本文所研究的渤海海域海底淺層氣分布情況可以為渤海海域海洋工程建設(shè)提供重要參考。
[Abstract]:Shallow gas seriously affects the structural stability of seafloor strata, so it has become an important safety factor in offshore marine engineering. In recent years, many suspected shallow gas areas have been found in the Bohai Sea by seismic means. The shallow gas in this area is contained in the strata below the sea floor or spilled from the strata to sea water through faults. Based on the geophysical survey data of high resolution seismic exploration in Bohai Sea, the seismic reflection characteristics of shallow gas in Bohai Sea are analyzed in this paper. By consulting the relevant data, the general origin of shallow gas in Bohai Sea is summarized. While summing up and mapping the distribution area of shallow gas in Bohai Sea, combined with the geological evolution and sedimentary history of Bohai Sea, the Genesis of the concentrated distribution area of shallow gas in Bohai Sea is deduced. Finally, the serious harm of shallow gas to offshore marine engineering is discussed. The shallow gas distribution in the Bohai Sea area studied in this paper can provide an important reference for the marine engineering construction in the Bohai Sea area.
【作者單位】： 中國海洋大學海底科學與探測技術(shù)教育部重點實驗室;中國海洋大學海洋地球科學學院;
【基金】：國家自然科學基金項目(41304096;41230318) 教育部博士點基金項目(20130132120014) 國家高級技術(shù)研究發(fā)展計劃項目(2013AA092501)資助~~
【分類號】：P741;P75

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本文編號：2518337