Concealed fault analysis based on the CT projection matrix

This paper proposes the concept of projection curves based on the theory of CT image reconstruction to probe the internal structure of the working panel prior to formal mining of the working panel.As well as reducing costs,this method provides safe and efficient excavation of the working panel.According to the results of the numerical model and the actual working panel,the new method has been proven to be accurate in detecting the location of the fault that extends into the face.Concealed faults of the internal working panel,as well as the start and end points of the fault,can be detected by this method.Engineering practice has proven that the method is highly reliable,has a highly decisive impact on faults for coal mining,and can be used to guide the safe mining of the working panel.

Flexible Scanner Works on Curved Surfaces

你印象中传统的扫描仪(scanner)是何种模样?也许在你的脑海中会跳出这些形容词:方方的,较大的,有一定重量。然而,日本科学家最新研发了一种扫描仪,它比一张普通的信用卡还要小,能够装在手机里。更值得一提的是,它可以清晰地扫描出褶皱物品的表面。本文详细介绍了这款扫描仪的原理及功能特性。