Multifractal characteristics of gas disaster accident in coal mine

4th International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Wang, Zhenjiang^1^2 ; Wu, Guang^1 ; Qin, Qirong^1 ; Tian, Kunyun^2 ; Wang, Gongzhong^2

School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan

610500, China^1

School of Safety Engineering, Henan University of Engineering, Zhengzhou, Henan

451191, China^2

关键词: Coal and gas outburst;    Complex nonlinear dynamics;    Disaster system;    Gas explosions;    Multi-fractal spectrum;    Multifractal characteristics;    Multifractal detrended fluctuation analysis;    Multifractal theory;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/237/4/042018/pdf
DOI  :  10.1088/1755-1315/237/4/042018

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to explore the law of development and the characteristics of evolution of death toll caused by gas disasters in coal mine, with the multifractal detrended fluctuation analysis (MF-DFA) method, we analyzed the three time series of death toll caused by gas disaster, coal and gas outburst, and gas explosions in coal mine from 2006-2015 in China. It concluded that all of three time series have multifractal characteristics, the multifractal spectrum width Δtc > Δbz > Δws, and the largest fluctuation and multifractal intensity of death toll time series of coal and gas outburst. The multifractal spectrum function f is right hook-shape, and the Δf