中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院页岩气与地质工程重点实验室
Investigation of the Quasi-Brittle Failure of Alashan Granite Viewed from Laboratory Experiments and Grain-Based Discrete Element Modeling

文献类型：期刊论文

作者Zhou, Jian1; Zhang, Luqing1; Yang, Duoxing2; Braun, Anika1; Han, Zhenhua1,3
刊名MATERIALS
出版日期2017-07-01
卷号10期号:7
关键词grain-based approach petrographic texture grain scale effect laboratory experiment Particle Flow Code Alashan granite
ISSN号1996-1944
DOI10.3390/ma10070835
文献子类Article
英文摘要Granite is a typical crystalline material, often used as a building material, but also a candidate host rock for the repository of high-level radioactive waste. The petrographic texture-including mineral constituents, grain shape, size, and distribution-controls the fracture initiation, propagation, and coalescence within granitic rocks. In this paper, experimental laboratory tests and numerical simulations of a grain-based approach in two-dimensional Particle Flow Code (PFC2D) were conducted on the mechanical strength and failure behavior of Alashan granite, in which the grain-like structure of granitic rock was considered. The microparameters for simulating Alashan granite were calibrated based on real laboratory strength values and strain-stress curves. The unconfined uniaxial compressive test and Brazilian indirect tensile test were performed using a grain-based approach to examine and discuss the influence of mineral grain size and distribution on the strength and patterns of microcracks in granitic rocks. The results show it is possible to reproduce the uniaxial compressive strength (UCS) and uniaxial tensile strength (UTS) of Alashan granite using the grain-based approach in PFC2D, and the average mineral size has a positive relationship with the UCS and UTS. During the modeling, most of the generated microcracks were tensile cracks. Moreover, the ratio of the different types of generated microcracks is related to the average grain size. When the average grain size in numerical models is increased, the ratio of the number of intragrain tensile cracks to the number of intergrain tensile cracks increases, and the UCS of rock samples also increases with this ratio. However, the variation in grain size distribution does not have a significant influence on the likelihood of generated microcracks.
WOS关键词CRYSTALLINE ROCKS ; UNIAXIAL COMPRESSION ; MECHANICAL-BEHAVIOR ; STRATHBOGIE GRANITE ; TENSILE-STRENGTH ; BUILDING STONES ; PARTICLE MODEL ; DEM SIMULATION ; FRACTURE ; STRESS
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000406683000152
出版者MDPI AG
资助机构National Natural Science Foundation of China(41502307 ; China Postdoctoral Science Foundation(2014M550838) ; Foundation of Institute of crustal dynamics, China earthquake administration(zdj2016-20) ; 41272353) ; National Natural Science Foundation of China(41502307 ; China Postdoctoral Science Foundation(2014M550838) ; Foundation of Institute of crustal dynamics, China earthquake administration(zdj2016-20) ; 41272353) ; National Natural Science Foundation of China(41502307 ; China Postdoctoral Science Foundation(2014M550838) ; Foundation of Institute of crustal dynamics, China earthquake administration(zdj2016-20) ; 41272353) ; National Natural Science Foundation of China(41502307 ; China Postdoctoral Science Foundation(2014M550838) ; Foundation of Institute of crustal dynamics, China earthquake administration(zdj2016-20) ; 41272353)
源URL[http://ir.iggcas.ac.cn/handle/132A11/61865]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Zhang, Luqing
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.China Earthquake Adm, Inst Crustal Dynam, Beijing 100085, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Jian,Zhang, Luqing,Yang, Duoxing,et al. Investigation of the Quasi-Brittle Failure of Alashan Granite Viewed from Laboratory Experiments and Grain-Based Discrete Element Modeling[J]. MATERIALS,2017,10(7).
APA Zhou, Jian,Zhang, Luqing,Yang, Duoxing,Braun, Anika,&Han, Zhenhua.(2017).Investigation of the Quasi-Brittle Failure of Alashan Granite Viewed from Laboratory Experiments and Grain-Based Discrete Element Modeling.MATERIALS,10(7).
MLA Zhou, Jian,et al."Investigation of the Quasi-Brittle Failure of Alashan Granite Viewed from Laboratory Experiments and Grain-Based Discrete Element Modeling".MATERIALS 10.7(2017).

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。