sea quake

Downhole technology for submarine CPT and its equipment development;

基于Downhole工藝的海底靜力觸探及其設備研制

This article introduces the characteristic of the Cezi-Zhenhai submarine oil pipeline.

介紹了冊子—鎮海海底原油管道的特點,海底管道不同部分的施工方法,主要包括近岸段管線的岸拖施工、離岸段管線的鋪管施工和水平口對接等。

Construction scheme of crossing the deep weathering slot about seabed tunnel;

海底隧道穿越風化深槽的施工方案

The selection technical condition of anti-corrosion layers for seabed oil and gas pipeline is raised and several protective measures of anti-corrosion layers of newly epoxy powder is introduced aimed at special requirement of anti-corrosion layers for seabed oil and gas pipeline and combined with use instance of anti-corrosion layers for seabed oil and gas pipeline both at home and abroad.

針對海底油氣管道防腐層的特殊要求,結合國內外海底油氣管道防腐層使用情況,提出了海底油氣管道防腐層的選擇技術條件;并介紹了新型環氧粉末防腐涂層的幾種防護措施。

In the paper,a new sampler—hydro-percussion seabed sampler is discussed.

介紹了集抽吸泵抽吸作用形成局部負壓和三重管結構設計等特性于一體的新型海底液動沖擊取樣器的工作原理,并建立起液動沖擊取樣器抽吸泵的數學模型,對抽吸泵進行了理論分析和數值計算。

Ultrasonic measurement of seafloor sediment cores;

海底柱狀沉積物超聲測量

Reflection and refraction of acoustic waves at a sediment interface is an important problem for seafloor scattering,bottom reverberation and the acoustic detection of objects.

聲波在海底界面的反射和透射是海底散射、海底混響、海底目標探測的重要問題。

The pressure wave caused by the vibration and yawp in seawater transmits into seafloor and induces elastic wave in seabed,so called seafloor seismic wave of sailing vessel.

航行艦船是一個很大的振動和噪聲源,其振動和噪聲引起的壓力波經由流體介質傳播到海底,引起海底巖層振動,產生彈性波并向遠處傳播,這種航行艦船在海底引起的彈性波稱為艦船海底地震波。

Electromagnetic field by infinite horizontal linear electric current on sea floor;

海底無限長水平線電流源電磁場

The real-time continuous observations from the sea floor will establish a long-term presence in the ocean and, hence, fund.

隨著新世紀的到來,海洋科學界正著手建設海底觀測系統的網絡,以探測和理解大洋系統的物理、化學、生物和地質等過程。

The necessity of using artificial electromagnetic sources at sea floor to determine the electrical properties of sea bottom is expounded.

闡述了在以電磁場探測海底電特性的方法中應用人工電磁場源的必要性；建議用水平電偶極子作為人工電磁場源的天線；介紹了兩種物理模型的分析結果；討論了增加探測海底深度的可能途徑。

Detailed risk analysis was fully made on slurry shield tunneling construction in river bottom and sea bottom in China,construction risk to constructors,engineering quality and engineering structure were reminded and evaluated.

對國內江底、海底泥水盾構隧道施工風險進行了詳細全面的分析,指出施工風險可能對盾構機械和施工人員、工程質量、工程結構帶來的危害,并對風險進行了評價。