关键词: 粘滑断层, 应变, 断层位移, 声发射

Abstract: Strain,displacement and AE waveform are observed along a fault in stick-slip experimentswith multi-channel digital sampling system.Some results are discussed in this paper:(1)Moststick-slip events and AE events took place at the same time.(2)There are pre-slip phenomenabefore some single events,No evident relationship between the fault displacement and magnitudeof AE events was found.(3)Inhomogenous spatial distribution of strain energy is an importantcondition for instable slip.Large events often take place in rapid energy change belts or low ener-gy region in high energy background,rather than in the highest energy area. This result can beapplied to outline of the seismic risk regions.(4)Exchange and mutual complement of strain en-ergy between source and adjacent regions are observed.The change of strain energy in source isalways contrary to that in adjacent regions.(5)There is an important difference between largeevents and small events,single events and multiple events.There are several times of energy ex-change before the large single events,and only an energy increase and hardening process beforethe small events or multiple events.

Key words: Stick-slip fault, Strain, Fault displacement, Acoustic emission