中文摘要：

随着深海资源的开发,深海沉积物稳定性越来越受关注,原位孔压观测技术作为深海沉积物参数获取的有效手段应当获得足够重视与研究。本文在总结国内外深海沉积物孔压原位观测探杆的基础上,结合FBG传感技术,设计研制一套基于FBG的深海沉积物超孔压观测设备,并开展了近海测试。观测位置海床面下1.5m处,平衡孔压高达5.01kPa。测试期间,其中埋入沉积层0.5m深处传感器准确获取潮汐作用于海底沉积物的超孔压数据,与当地潮汐数据对比,两者相位差为T/4。

英文摘要：

With the development of deep-sea resources,more and more attention has been paid to the stability of deep-sea sediments.As an effective means of obtaining deep-sea sediment parameters,in-situ pore pressure monitoring technique should be paid enough attention to and studied.In this paper,based on the summary of deep-sea sediment pore pressure observation probe technology,combined with FBG sensing technology,an in-situ excess pore pressure observation instrument based on FBG has been designed and developed,and offshore test has been carried out.The observation position is 1.5mbelow the seabed,and the equilibrium excess pore pressure is up to 5.01 kPa.During the test period,a sensor which is located 0.5m below the seabed,accurately obtained the excess pore pressure data of tides acting on the seafloor sediments and compared them with local tide data,with a phase difference of T/4.