摘要
本文通过对岩石试件的真三轴压缩实验，分析了岩石试件卸载刚度ＫＦ与压力机系统刚度比值对岩石破裂型式及破裂前声发射相对平静的影响。结果表明：当｜ＫＦ／ＫＳ＞１时，岩石试件产生突发断裂，当｜ＫＦ／ＫＳ｜＜１时，岩石试件产生缓裂。并且｜ＫＦ／ＫＳ｜的值越小，相对平静时间越长；｜ＫＦ／ＫＳ｜的值越大，相对平静时间越短；而当｜ＫＦ／ＫＳ｜＞３时，声发射相对平静时间为零。
In this paper, influence of the ratio value unloading rigity of rock sample to rigity of pressure machine system, on rock rupture pattern and relative quiet of acoustic emission prior to rupture is analysed through real-triaxial compression test on rock sample. The results show that if |KF/KS|>1, an abrupt rupture in rock sample occurs; if |KF/KS|<1, a gentle rupture in rock sample appears;The smaller|KF/KS|is, the larger relative quiet time is;conversely, it is true, and if |KF/KS|>3, relative quiet time for acoustic emission is zero.
出处
《地震研究》
CSCD
北大核心
1994年第3期301-308,共8页
Journal of Seismological Research
关键词
岩石
压力机
刚复
岩石破裂试验
Rock-breaking test, Rupture velocity,Triaxial compression test.
