岩石受压破裂过程应力应变及声发射特性研究

摘要

Through testing on monitoring the characteristics of the acoustic emission parameters and the characteristics of time process in rock stress,the characteristics of time in the whole process of rock deformation until failure was explored,and the relations of rocks stress-strain and energy parameters of acoustic emission between stress and time in the whole process of rock failure was found out. Through the comparative researches, it was shown that the rate of acoustic emission and the energy parameters of acoustic emission had direct relations in the process of loading of different rocks, but the size of the stress had not direct relations with the rate of acoustic emission and the energy parameters of acoustic emission. Finally,the rule of the change between the curve of stress-strain and the characteristics of acoustic emission in different rocks were obtained through the compression tests of different rocks.%通过试验监测岩石受力过程的声发射参数特征和时间过程特征等,探索岩石受力变形直至破坏全过程的时间特性,得到岩石破裂过程中岩石应力应变、声发射参数与应力和时间的关系.对比研究表明,不同岩样在加载过程中的声发射率与声发射能量参数成正比关系,而应力大小与声发射率和声发射的能量参数不成正比关系.最后通过岩样的压缩试验得出了不同岩样的岩石应力、应变曲线与声发射特性之间的变化规律.