Sources of variability in laboratory rock test results

作     者：Rashid Geranmayeh Vaneghi Seyed Erfan Saberhosseini Arcady VDyskin Klaus Thoeni Mostafa Sharifzadeh Mohammad Sarmadivaleh Rashid Geranmayeh Vaneghi;Seyed Erfan Saberhosseini;Arcady V.Dyskin;Klaus Thoeni;Mostafa Sharifzadeh;Mohammad Sarmadivaleh

作者机构：WA School of Mines:MineralsEnergy and Chemical EngineeringCurtin UniversityKalgoorlieWA6430Australia Northern Star ResourcesKalgoorlieWA6430Australia Science and Research BranchIslamic Azad UniversityTehranIran School of CivilEnvironmental and Mining EngineeringThe University of Western AustraliaCrawleyWA6009Australia Centre for Geotechnical Science and EngineeringThe University of NewcastleCallaghanNSW2308Australia WA School of Mines:MineralsEnergy and Chemical EngineeringCurtin UniversityKensingtonPerthWA6151Australia 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2021年第13卷第5期

页      面：985-1001页

核心收录：

学科分类：08[工学] 0818[工学-地质资源与地质工程] 080104[工学-工程力学] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the Curtin Strategic International Research Scholarship(CSIRS)and Mining Research Institute of Western Australia(MRIWA)-project M474 scholarship the Australian Research Council through project DP190103260 

主　　题：Rock property variation Uniaxial compressive strength(UCS) Specimen preparation End flatness Loading equipment precision Pre-existing microcrack 

摘      要：Appropriate rock characterization is beneficial in providing a reliable judgment on rock properties which is crucial for the design process of rock engineering ***,it can be difficult to obtain consistent mechanical parameters due to substantial variations in rock *** this research,uniaxial compression tests on dolerite specimens collected from a gold mine in Western Australia showed substantial scatter in the *** categorization based on the P-wave velocities is as accurate as the thin section analysis,which suggests that they can be used together to gain a more accurate initial understanding of the rock types before any laboratory *** quality of specimen preparation and rockemachine interaction greatly affect the test *** instance,non-parallelness of loading platens can lead to considerable scatter of the testing results,which would be perceived as rock *** is suggested that the current testing standards should be modified towards a better control of the loading machine performance and equipment ***,the possibility of pre-existing microcracks in rock,neither detected by the thin section analysis nor by the ultrasonic measurement,must be examined by computed tomography(CT)scanning as they can affect the test *** study will enhance our knowledge about the sources of variability in laboratory test results of rock which is essential for obtaining reliable data.