【摘要】 把二只电声换能器安装在静力采样器箱体底部,测量声脉冲通过箱体中沉积物的传播时间,获得沉积物声速值;检测接收幅度,观察不同沉积物的衰减系数;利用LDC1—1型静力采样器的箱体与底架的相对位移带动多圈电位器的动臂,提供一个随取样深度而变化的电压值,由X—Y函数记录器记录。在取样的同时现场测量沉积物的声速和衰减的垂直分布。结果表明:实验室和现场所得的沉积物声速、声衰减与沉积物的类型密切相关。更多还原

【Abstract】 Two electro-acoustic sensors were mounted on the bottom of static box core to measure the time that sound pulses pass through the sediment contained in the core, thus, sound velocity is achieved. It can also be used to observe various attenuating eoefficient,potentiometers arm a dirven by the displacement between the body of core and its fram, so the electric pressure value which depends on the depth of sample is presented, then it is recorded on X-Y function rraph plotter The sound velocity and vertical distribution of sound attenuation is in-situ measuied which sampling. The results show that sound velocity and sound attenuation is correlated with types of sediment.更多还原