期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：300
期号：2
页码：1-9
DOI：10.1088/1755-1315/300/2/022150
出版社：IOP Publishing
摘要：In order to study the variation of the mechanical properties of limestone under the condition of impact load, the dynamic mechanical properties of limestone under different strain rate and cyclic impact conditions were studied. The results show that the uniaxial compressive strength of limestone is 93.76MPa and the acoustic velocity is 5122m s-1, and under the condition of single impact load, the peak stress and strain rate are positively correlated. The peak strain increases with the increase of strain rate, and the larger the strain rate, the more serious the fragmentation of limestone. Under the condition of cyclic impact load, the cumulative damage of limestone increases gradually, and the more impact times, the faster the increase speed.
