JOURNALOFHEILONGJIANGUNIVERSITYOFSCIENCEANDTECHNOLOGY May2020Vol.30No.3 Experimentalstudyonmechanicalpropertiesandacousticemissionofholesandstone ………………………………………… XiaoFukun,XuLei,BashkovOlegViktorovich,BaoFengyuan(231)Failurecharacteristicsunderlyinguniaxialcompressionofsandstonewithdifferentwatercontent ………………………………………………………………………………………… LiuYongli,LiLong(238)Surfaceactionmechanism behin...