IMHE OpenIR  > 山地灾害与地表过程重点实验室
Numerical analysis of hard rock blasting unloading effects in high in situ stress fields
Xiao, Si-You1,2,3; Su, Li-Jun1,3,4; Jiang, Yuan-Jun1,3,4; Liu, Zhi-Xiang2
Corresponding AuthorJiang, Yuan-Jun(yuanjun.jiang.civil@gmail.com)
2019-03-01
Source PublicationBULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
ISSN1435-9529
Volume78Issue:2Pages:867-875
AbstractBlasting in high in situ stress fields is different from blasting at the earth's surface because of the dynamic unloading effect in the former. In order to study the coupling of dynamic loading and dynamic unloading in the blasting process, the explicit finite element method and explicit-implicit finite element method are employed respectively to investigate the influence of high stress on blasting effects. The results show that the stress and strain change rules of the two methods are clearly different. The stress and strain change rates calculated by the explicit-implicit algorithm simulation are greater than the results simulated by the explicit finite algorithm. The radius of the blasting cavity calculated by the explicit-implicit finite element method is 0.015 m larger than that of the explicit finite element method. Based on the results of the explicit finite element method, a theoretical model is also established, which helps to clarify the effects of high in situ stress unloading when blasting in a high in situ stress field. The model shows that the maximum tensile radial displacement caused by high in situ stress dynamic unloading at the edge of the blasting cavity is 0.12 mm, and the dynamic unloading radial tensile effect can lead to rock failure. This research illustrates that high stress has a considerable influence on the blasting process and on rock-breaking effects. According to the findings, certain blasting engineering design suggestions are made.
KeywordBlasting High in situ stress Coupled statics and dynamics Dynamic unloading Explicit-implicit algorithm
DOI10.1007/s10064-017-1067-7
Indexed BySCI
WOS KeywordEXCAVATION ; RELEASE ; SIMULATION ; TUNNEL ; DAMAGE ; PATH
Language英语
Funding ProjectNational Natural Science Foundation of China[41502334] ; 973 Program of China[51278397]
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Environmental ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000460046500014
Funding OrganizationNational Natural Science Foundation of China ; 973 Program of China
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25312
Collection山地灾害与地表过程重点实验室
Corresponding AuthorJiang, Yuan-Jun
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Land Surface Proc, Chengdu 610041, Sichuan, Peoples R China
2.Cent S Univ, Sch Resources & Safety Engn, Changsha 410083, Hunan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Xiao, Si-You,Su, Li-Jun,Jiang, Yuan-Jun,et al. Numerical analysis of hard rock blasting unloading effects in high in situ stress fields[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2019,78(2):867-875.
APA Xiao, Si-You,Su, Li-Jun,Jiang, Yuan-Jun,&Liu, Zhi-Xiang.(2019).Numerical analysis of hard rock blasting unloading effects in high in situ stress fields.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,78(2),867-875.
MLA Xiao, Si-You,et al."Numerical analysis of hard rock blasting unloading effects in high in situ stress fields".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 78.2(2019):867-875.
Files in This Item:
File Name/Size DocType Version Access License
Numerical analysis o(1653KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xiao, Si-You]'s Articles
[Su, Li-Jun]'s Articles
[Jiang, Yuan-Jun]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xiao, Si-You]'s Articles
[Su, Li-Jun]'s Articles
[Jiang, Yuan-Jun]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xiao, Si-You]'s Articles
[Su, Li-Jun]'s Articles
[Jiang, Yuan-Jun]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Numerical analysis of hard rock blasting unloading effects in high in situ stress fields.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.