摘要
进行了单轴压缩条件下砂岩的声发射试验,研究了砂岩单轴压缩破坏全过程声发射特性。试验结果表明,岩石破裂过程中,声发射具有与力学参数同步的阶段性特征,且岩石的不同变形阶段的声发射特征不同。根据岩石受压过程中声发射的能量、能率和事件率的变化,能较好地表征岩石受压破坏的时空演化规律。
The test of acoustic emission is carried out on the condition of uniaxial compression,and the acoustic emission characteristics of sandstone in the whole fracture process are studied.The test results show that the acoustic emission has the synchronized phase characteristics in the rock fracture process. In addition,the acoustic emission characteristics will change in different phases. According to the change of the rate of energy and events rate,the regulation of rock fracture process on the condition of compression can be vividly showed.
出处
《工程与试验》
2016年第2期19-22,64,共5页
Engineering and Test
基金
东北大学第七批国家级大学生创新实验(150032)
关键词
声发射
单轴压缩
声发射事件率
声发射振铃计数
砂岩
acoustic emission
uniaxial compression
acoustic emission event rate
ringing acoustic emission count
sandstone
