海底沉积物孔隙度Micro-CT扫描测定方法研究

Study on Seabed Sediment Porosity Measurement Method by Micro-CT Scanning

孔隙度是海底沉积物诸多物理性质中的一项重要参数,并且与沉积物的声学特性有着密切的联系。介绍了一种新的海底沉积物样品孔隙度无损测定方法:Micro-CT扫描孔隙度测定法。通过高分辨率的活体Micro-CT扫描仪对沉积物样品进行三维CT扫描,获得一系列二维CT切片图及切片上各点的CT值,利用固相颗粒和孔隙充填海水之间CT值分布范围的不同,提取沉积物的孔隙度。该方法不破坏沉积物样品,并且能在三维空间范围观察海底沉积物的孔隙结构,在多相介质研究中具有广阔的应用前景。

Porosity is an important parameter in many seabed sediments physical properties and also closely linked with acoustic characteristics of the sediments, a new non-destructive test for sediments was described ： MicroCT scanning porosity measurement. Through high-resolution in vivo Micro-CT scanner to sediment samples three-dimensional scanning, obtaining a series of 2D CT slices and CT values. Taking advantage of the range of CT values between solid particles and pore-filling ment samples and can observe the pore pects in muhiphasic media. water, extracting sediment porosity. This method does not destroy the sedistructure of sediments in three dimensions. It will be broad application prospects in muhiphasic media.