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Mechanics Simulation of Sampling Process by Using Vibrating Seabed Sampler

机译：采用振动海底采样器模拟采样过程的力学仿真

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摘要

Analytical method was used to analyze the drilling and sampling process of the remote-control seabed sampler, which took the dynamic load on the sampling tube and soil strength change caused by vibration into consideration. The effects on penetrating resistance were evaluated which refer to thickness and diameter of sampling tube, friction angle and absorption factor between soil and tube, and penetrating speed. So that a formula to calculate exciting force was gained The simulated results showed that a) drill pressure had an obvious influence on static-pressed penetration depth, but the depth would be small, so other forces should be applied if the shear strength of seabed deposition was great; b) diameter and thickness of sampling tube were of vital importance, they cannot be arbitrarily increased because of the disturbance to sampler and the increase of weight; c) during the drilling process, exciting frequency should be controlled according to the resistance to fulfill the requirement of penetration speed and disturbance degree; The paper gave us a guidance to determine how to design parameters of sampler and to control the drilling parameters.
机译：分析方法用于分析遥控海床采样器的钻孔和采样过程，其考虑了振动引起的采样管和土壤强度变化的动态载荷。评估对渗透性的影响，这是指采样管的厚度和直径，土壤和管之间的摩擦角和吸收因子，以及穿透速度。因此，获得了计算励磁力的公式，模拟结果表明a）钻孔压力对静压穿透深度有明显影响，但深度将是小的，因此如果海底沉积的剪切强度应该施加其他力很棒; b）采样管的直径和厚度至关重要，由于对采样器的干扰和重量的扰动，它们不能随意增加; c）在钻井过程中，应根据阻力来控制励磁频率，以满足穿透速度和干扰程度的要求;本文给了我们一个指导，以确定如何设计采样器参数并控制钻探参数。

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