CAJ | 학술논문

在单轴和循环加载条件下对永川煤矿砂岩损伤破坏全过程的声发射特性进行了系统研究,结果表明：砂岩声发射类型与MOGI-I相似,应力应变全过程曲线对应的Kaiser点、屈服点及峰值点处声发射信号明显;随着循环加载水平的增加,不同轴向应力和轴向应变阶段对应的Felicity效应比值越来越小,反映了岩石损伤程度的增加。
재단축화순배가재조건하대영천매광사암손상파배전과정적성발사특성진행료계통연구,결과표명：사암성발사류형여MOGI-I상사,응력응변전과정곡선대응적Kaiser점、굴복점급봉치점처성발사신호명현;수착순배가재수평적증가,불동축향응력화축향응변계단대응적Felicity효응비치월래월소,반영료암석손상정도적증가。
Acoustic emission characteristics of damage and failure process of Yongchuan Coal Mine sand rock under uniaxial pressure and cyclic loading were studied,the results show that sand rock is similar to MOGI-I in acoustic emission characteristics,the acoustic emission signal was obvious in Kaiser point,yield point and peak point of the complete stress-strain process curve;The ratio of Felicity effect under different axial pressure and strain stage was smaller and smaller when the level of cyclic loading was higher and higher,which mean that the damage degree of the sand rock was higher and higher.