Rock fracture roughness modeling method and device based on spatial frequency domain

• Main Authors: LIANG JIASEN, ZHAO XIAOHUA, FANG HONGYUAN, XUE BINGHAN, DU MINGRUI, SHI MINGSHENG, WANG NIANNIAN, DU XUEMING
• Format: Patent
• Language: Chinese; English
• Published: 03.06.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The invention provides a rock fracture roughness modeling method and device based on a spatial frequency domain. The method comprises the following steps: S1, setting a spatial frequency resolution and a spectral index; s2, generating amplitude through the spectral index and a preset amplitude algorithm; s3, generating a phase angle through a preset phase angle generation algorithm; s4, inputting the spatial frequency resolution, the amplitude and the phase angle into a preset rock surface roughness representation function to obtain an expression of a rock fracture roughness model to be generated; s5, a visual contour generation algorithm is executed according to the expression of the rock fracture roughness model, a visual contour of the corresponding rock fracture roughness model is obtained, the surface with complete random roughness can be obtained through the method, and then the rock fracture roughness model closer to natural rock is generated. 本发明提供了一种基于空间频率域的岩石裂隙粗糙度建模方法及装置。所述方法包括如下步骤：步骤S1、设定空间频率分辨率及光谱