Impact hazard area classification based on multi factor coupled quantitative characterization model

• Published in: Gong kuang zi dong hua = Industry and mine automation Vol. 50; no. 7; pp. 47 - 54, 97
• Main Authors: JIA Haibin, LIU Aixin, ZHANG Bin, FU Xiangchao, CAI Wu
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Industry and Mine Automation 01.07.2024
• Subjects: area classification; impact hazard assessment; multi factor coupling method; quantitative characterization model; rockburst; stress analysis method
• ISSN: 1671-251X
• DOI: 10.13272/j.issn.1671-251x.2024050015

In response to the problem that existing impact hazard assessment methods cannot accurately reflect the features of stress concentration changes under the influence of impact hazard factors, an impact hazard area classification method base on multi factor coupled quantitative characterization model is proposed. Firstly, based on the geological conditions of the underground coal seam, the distribution of roadways, and the scope of mining, the main impact influencing factors are analyzed. Secondly, referring to the multi factor superposition method and stress analysis method respectively, the method determines the influence range and relative stress concentration coefficient of various impact influencing factors. Thirdly, based on the distribution function of micro element strength inside the coal rock mass, a multi factor coupled quantitative characterization model for impact hazard is constructed. Finally, the impact range and relative stress concentration coefficient of the impact influencing factors are inp