一种新型的6000米深水可视可控轻型沉积物柱状取样系统

为了获得连续、低扰动、超长的深海海底沉积物样品,研制了一套可应用于最大水深6 000 m,最长取样可达25 m的可视可控轻型沉积物柱状取样系统。本套设备主要包括甲板控制单元、取样系统和立式收放机构3部分。在取样过程中,本系统充分利用动能和深海液压锤夯击双动力组合,即取样过程包括前期的重力贯入和后期的夯击取样两个过程。液压锤夯击机构的配置使取样器在不显著增加自身重量的前提下,完成超长、连续、低扰动的深海沉积物柱状样采集工作。取样器的组合与拆卸采用立式吊装的方式,极大地降低了取样过程中的工作量和所需甲板作业空间。水下监测系统的配置解决了以往盲采样的弊端。除此之外,本取样器还设有多个标准通用端口,可以扩展为多种设备的集成平台,完成多种数据的采集。目前本套设备已经成功进行了海试,并作为主要沉积物取样设备成功应用于多个海上调查航次,取得了一系列连续、低扰动的柱状样品,有效地提高了我国深海可视可控柱状取样的技术水平。

A novel monitorable and controlable long-coring system with maximum operating depth 6 000 m

A novel monitorable and controllable long-coring system with maximum operating depth 6 000 m was developed in order to obtain high quality long sediment cores of deep sea sediments. The sampling process is powered by the kinetic energy gained during the dropping of the system and the hammering power provided by the hydraulic hammer successively. The sampling process has two steps: shallow penetration gravity sampling firstly and deep hammering sampling secondly. The system mainly consists of three units: the control unit on the deck, the sampling unit and the vertical type assembly unit. The monitoring system is mounted on in the compressive cabins surrounding the hydraulic hammer. The prototype with most functions of the long coring system was tested successfully during sea trials and worked as primary sampler during several research cruises both in shallow and deep waters.