煤矿安全2024，Vol.55Issue(11)：77-83,7.DOI:10.13347/j.cnki.mkaq.20222288
深部高应力条件下煤与瓦斯突出全过程中多物理场参数响应
Multi-physical field parameter response in the whole process of coal and gas outburst under deep high stress
摘要
Abstract
Based on the thermo-fluid-solid coupling law of coal and gas outburst in deep mining,a numerical model of coal and gas outburst is established,and the response of multi-physical parameters in the whole process of coal and gas outburst under high stress condition is analyzed.The results show that the response rule of the stress field around the outburst hole is initial vibration-sudden at-tenuation-late stability.The decreasing rate of gas pressure is negatively correlated with the length of the outburst hole.In the out-burst process,the adsorbed gas contained in the crushed coal quickly desorbed and expanded to do work,resulting in a decrease in temperature;the areas with significant changes in permeability after outburst can be divided into sudden increase area,medium in-crease area and increase area.With the increase of stress,the proportion of elastic potential in total coal and gas outburst energy in-creases,and the proportion of elastic potential is positively correlated with stress.关键词
深部开采/煤与瓦斯突出/应力/多物理场/能量条件Key words
deep mining/coal and gas outburst/stress/multiple physical fields/energy condition分类
矿业与冶金引用本文复制引用
张强,年军,赵博,张伟..深部高应力条件下煤与瓦斯突出全过程中多物理场参数响应[J].煤矿安全,2024,55(11):77-83,7.基金项目
国家自然科学基金面上资助项目(52274220) （52274220）
山西省基础研究计划(自由探索类)青年资助项目(202203021212260) （自由探索类）
山西省高等学校科技创新资助项目(2021L059) （2021L059）
