基于FBG的深海沉积物孔压观测设备研究FBG Based Instrument for Marine Sediment Pore Pressure Reaearch
刘涛,柴万里,郭磊
摘要(Abstract):
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。
关键词(KeyWords): 深海沉积;孔隙水(气)压力;长期原位观测;FBG;潮汐作用
基金项目(Foundation): 国家自然科学基金项目(41672272,41427803)资助~~
作者(Author): 刘涛,柴万里,郭磊
DOI: 10.16441/j.cnki.hdxb.20160469
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