Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《China Mining Magazine》 2015-S2
Add to Favorite Get Latest Update

Research into the dynamic mechanical characteristics of sandstone under different strain rate

ZHANG Yan;LI Qing-wen;LI Miao;CUI Ming;School of Civil and Environmental Engineering,University of Science and Technology Beijing;  
Underground cavities in mine usually adopt the engineering blasting method to conduct the excavation,the rock material would show the hardening phenomenon under the dynamic loading,such as engineering blasting.By taking the Split Hopkinson Pressure Bar system,a dynamic impact test with 5groups of sandstone samples under different strain rate were conducted,after that,the data of incident wave,reflected wave and transmitted wave could be analysed.So,the dynamic compressive strength with strain rate,the peak strain with strain rate and dynamic stress-strain curve were drawn.And the dynamic harden factor under different strain rate was obtained.At last,the analysis on dynamic mechanical properties of the sandstone and the relationship between dynamic compressive strength and strain rate were carried out,and failure mode of the rock samples with different strain rate was summarized.
【Fund】: 国家自然科学基金项目资助(编号:51474016)
【CateGory Index】: TD32
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved