自返式微型地热探针水下运动及贯入特性分析

发布时间：2018-03-21 04:44

本文选题：自返式　切入点：地热探针　出处：《海洋工程》2017年06期 　论文类型：期刊论文

【摘要】：自返式微型地热探针水下运动特性以及其贯入深度关系到其能否正常入泥工作,针对自返式微型地热探针的结构,对其进行简化,建立物理模型。并针对海洋流场及海洋底质,抽取关键参数,建立探针投放过程中的流场模型和底质模型。将所建立模型导入数据分析软件,先分析探针在投放过程中竖直方向和水平方向的相关运动特性,然后拟合为探针下行过程中下行深度和横向漂移的轨迹图,可见其水平方向最大位移约为106 m。在理论上论证了探针在下行过程中的姿态稳定性。通过计算论证了自返式微型探针在依靠自身重力的情况下,自动贯入海底沉积物进行热流测量工作方式的可行性。并在最后通过海上试验,对分析结果进行了实践验证。
[Abstract]:The underwater motion characteristics and penetration depth of self-return micro-geothermal probe are related to its normal mud entry. Aiming at the structure of self-return micro-geothermal probe, the physical model is established, and the ocean current field and ocean bottom are analyzed. The key parameters are extracted, and the flow field model and the bottom mass model are established. The model is imported into the data analysis software to analyze the vertical and horizontal movement characteristics of the probe. Then fitting the trajectory diagram of the depth and lateral drift of the probe in the downlink process. It can be seen that the maximum displacement in horizontal direction is about 106 m.The stability of the probe's attitude in the downlink process is theoretically demonstrated. The self-return microprobe is proved to depend on its own gravity by calculation. It is feasible to measure the heat flux of the sediment through the sea bed automatically. Finally, the results of the analysis are verified by practice through the sea test.
【作者单位】：国家海洋技术中心;
【基金】：国家自然科学基金资助项目(41306093) 海洋公益性行业科研专项资助项目(201405006-2)
【分类号】：P736

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