Shock-induced fracture of dolomite rock in small-scale blast tests

作     者：Pawel Baranowski Michal Kucewicz Mateusz Pytlik Jerzy Matachowski Pawe? Baranowski;Micha? Kucewicz;Mateusz Pytlik;Jerzy Ma?achowski

作者机构：Military University of TechnologyFaculty of Mechanical EngineeringInstitute of Mechanics&Computational Engineering2 Gen.S.Kaliskiego Street00-908WarsawPoland Central Mining InstituteConformity Assessment Body40-166KatowicePoland 

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：2022年第14卷第6期

页      面：1823-1835页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Interdisciplinary Center for Mathematical and Computational Modeling(ICM),University of Warsaw(Grant No.GA73-19) as part of the implementation of the Military University of Technology(Grant No.22-876) 

主　　题：Johnson-HolmquistⅡmodel(JH-2) Rock Blasting Fracture Small-scale test 

摘      要：This paper attempts to study dolomite failure using small-scale blast *** experimental setup consisted of a cylindrical specimen with a central borehole fitted with a detonation cord inside a copper *** specimen was confined using lead *** the test,acceleration histories were recorded using sensors placed on the lead *** results showed that heterogeneity and initial cracks significantly influenced the observed failure and cracking *** tests were numerically represented using the previously validated Johnson-HolmquistⅡ(JH-2)constitutive *** properties of the detonation cord were first determined and verified in a special test with a lead specimen to compare the deformation in the test with that of numerical ***,the small-scale blast test was simulated,and the failure of the dolomite was compared with the test *** of acceleration histories,scabbing failure,and number of radial cracks and crack density confirmed the overall repeatability of the actual testing *** is likely that the proposed model can be further used for numerical studies of blasting of dolomite rock.