DICE:An open-source MATLAB application for quantification and parametrization of digital outcrop model-based fracture datasets  

作　　者：Niccolò Menegoni Daniele Giordan Riccardo Inama Cesare Perotti 

机构地区：[1]Department of Earth and Environmental Sciences,University of Pavia,Pavia,27100,Italy [2]National Research Council of Italy,Research Institute for Geo-Hydrological Protection(CNR-IRPI),Torino,10135,Italy [3]Signal S.r.l.,Via Fratelli Cuzio 42,Pavia,27100,Italy

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2023年第5期1090-1110,共21页岩石力学与岩土工程学报（英文版）

摘　　要：An open-source MATLAB application(app)named Discontinuity Intensity Calculator and Estimator(DICE)was developed in order to quantitatively characterize the fractures,or in more general,discontinuities within a rocky outcrop in three-dimensional(3D)digital data,such as digital outcrop model(DOM).The workflow proposed for the parametrization of the discontinuities consists of the following steps:(1)Analysis and mapping of the fractures detected within the 3D DOMs;(2)Calculation of the orientation,position and dimensions of discontinuities that are represented by best-fit circular planes;(3)Determining the discontinuity parameters(dimension,distribution,spacing and intensity)by the DICE algorithm using different 3D oriented sampling techniques(3D oriented scanline,3D oriented circular scan window and spherical scan volume).Different sampling methods were bench tested with a synthetic,as well as a natural case study,and compared in order to understand the advantages and limitations of each technique.The 3D oriented circular scan window appears to be the most effective method for fracture intensity estimation with high accuracy(error 0.4%)and stability with variations in scan radius.

关 键 词：Fracture parameter DISCONTINUITY Fault Fracture intensity Linear fracture intensity(P10) Areal fracture intensity(P21) Volumetric fracture intensity(P32) 

分 类 号：TE377[石油与天然气工程—油气田开发工程]