煤矿安全2019，Vol.50Issue(6)：6-10,5.DOI:10.13347/j.cnki.mkaq.2019.06.002
瓦斯对冲击倾向性能量指标影响的数值模拟
Numerical Simulation Study on Influence of Gas on Energy Index of Bursting Tendency
摘要
Abstract
To study the influence of gas on the energy index of coal rock bursting tendency, based on the force characteristics of coal containing gas,the gas-solid coupling control equation is established, and the influence of gas on elastic energy index and impact energy index was studied by using COMSOL numerical simulation software. The result shows that with the increase of gas pressure, the plastic strain area in coal sample is enlarged, the plastic strain value increases, the ability of the coal sample to keep the elastic strain energy drops. In the process of deformation and failure, more energy is consumed, and the surplus energy is reduced when the coal sample is completely destroyed, the impact energy index and the elastic energy index are reduced. Gas weakens the rock burst tendency of coal in measuring the bursting tendency and evaluating the rock burst risk of coal containing gas seams, the influence of gas on the burst performance of coal seams should be taken into full consideration.关键词
瓦斯/冲击倾向性/能量耗散/冲击地压/数值模拟Key words
gas/rock burst tendency/energy dissipation/rock burst/numerical simulation分类
矿山工程引用本文复制引用
LI Shaogang,ZHANG Guanghui,DENG Zhigang..瓦斯对冲击倾向性能量指标影响的数值模拟[J].煤矿安全,2019,50(6):6-10,5.基金项目
国家重点研发计划资助项目(2017YFC0804201) （2017YFC0804201）
国家科技重大专项资助项目(2016ZX05045003-006-002) （2016ZX05045003-006-002）
国家自然科学基金资助项目(51574150,51704159) （51574150,51704159）
