典型文献
Evaluation and classification of rock heterogeneity based on acoustic emission detection
文献摘要：
For deep rock mechanics and subsurface engineering, accurately characterizing and evaluating rock heterogeneity as well as analyz-ing the correlation between the heterogeneity and physical and mechanical properties of rocks are critical. This study investigated the charac-teristics of acoustic emission signals produced in the process of strong and weak phase damage to rocks. The failure mechanisms of the strong and weak phases were analyzed by performing Brazilian splitting tests on different metagabbros and granites. The strong–weak phase ratio of the rocks and the uniformity of their spatial distribution were characterized. Test results show that as the feldspar develops, the strong-phase ra-tio of the metagabbro increases. However, the spatial distribution of feldspar minerals in the metagabbro becomes less uniform. The mineral spatial distribution uniformity in the altered granite is good; however, its strong-phase ratio is low. Furthermore, the strong-phase ratio of the typical granite is high; however, its mineral spatial distribution uniformity is poor. Moreover, uniaxial and triaxial test results show that the peak strength and elastic modulus of the rocks are related to the strong–weak phase ratio and mineral spatial distribution uniformity of the rocks. This study provides a new analytical method for the mechanical evaluation of deep rocks.
文献关键词：
中图分类号：
作者姓名：
Tongzhao Zhang;Hongguang Ji;Xiaobo Su;Shuang You;Daolu Quan;Zhou Zhang;Jinzhe Li
作者机构：
School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Key Laboratory of Urban Underground Space Engineering,University of Science and Technology Beijing,Beijing 100083,China;Chair of Soil Mechanics,Foundation Engineering and Environmental Geotechnics,Ruhr-Universit?t Bochum,Bochum 44801,Germany
文献出处：
引用格式：
[1]Tongzhao Zhang;Hongguang Ji;Xiaobo Su;Shuang You;Daolu Quan;Zhou Zhang;Jinzhe Li-.Evaluation and classification of rock heterogeneity based on acoustic emission detection)[J].矿物冶金与材料学报,2022(12):2117-2125
A类：
metagabbros,metagabbro
B类：
Evaluation,classification,heterogeneity,acoustic,emission,detection,For,deep,mechanics,subsurface,engineering,accurately,characterizing,evaluating,well,correlation,between,physical,mechanical,properties,rocks,are,critical,This,study,investigated,teristics,signals,produced,process,strong,weak,damage,failure,mechanisms,phases,were,analyzed,by,performing,Brazilian,splitting,tests,different,granites,ratio,uniformity,their,spatial,distribution,characterized,Test,results,show,that,feldspar,develops,increases,However,minerals,becomes,less,altered,good,however,its,low,Furthermore,typical,high,poor,Moreover,uniaxial,triaxial,peak,strength,elastic,modulus,related,provides,new,analytical,method,evaluation
AB值：
0.443372
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