Key Laboratory for the Exploitation of Southwest Resources and the Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing 400044, P.R.China;Chongqing Research Institute of China Coal Technology & Engineering Gro 在期刊界中查找 在百度中查找 在本站中查找
Key Laboratory for the Exploitation of Southwest Resources and the Environmental Disaster Control Engineering, Ministry of Education;State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P.R.China 在期刊界中查找 在百度中查找 在本站中查找
Key Laboratory for the Exploitation of Southwest Resources and the Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing 400044, P.R.China; DISTART Department, Faculty of Engineering, University of Bologna, Via 在期刊界中查找 在百度中查找 在本站中查找
Key Laboratory for the Exploitation of Southwest Resources and the Environmental Disaster Control Engineering, Ministry of Education;State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P.R.China 在期刊界中查找 在百度中查找 在本站中查找
Key Laboratory for the Exploitation of Southwest Resources and the Environmental Disaster Control Engineering, Ministry of Education;State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, P.R.China 在期刊界中查找 在百度中查找 在本站中查找
The correlation dimension evolution characteristics of acoustic emission(AE) time-series during the instability and failure of coal with and without gas are analyzed base on fractal theory. The results show the coal rock’s AE time-series of deformation stages have obviously fractal characteristics under uniaxial loading. The processes of AE of deformation have different self-similarity, and the correlation dimension can describe the mechanical state of coal. During the triaxial loading process, the stress-varying trend of AE time-series of coal with and without gas is similar to the trend of AE correlation dimension. The sharp decrease of AE time-series’ correlation dimension can be considered as a “precursor” for failure. This feature doesn’t change with the change of confining pressure and gas pressure.