煤炭科技2023，Vol.44Issue(6)：92-97,6.DOI:10.19896/j.cnki.mtkj.2023.06.019
动载冲击作用下煤柱动力响应特征数值模拟研究
Numerical simulation study on dynamic response characteristics of coal pillar under dynamic load impact
谢方鹏 1侯记川 1李慧波 1崔超超1
作者信息
- 1. 陕西长武亭南煤业有限责任公司,陕西 长武 713600
- 折叠
摘要
Abstract
The stability of coal pillar plays an important role in the safety of mine production.Aiming at the dynamic response character-istics of coal pillar under dynamic load impact,taking the protective coal pillar of a mine as the engineering background,the stress and plastic zone expansion law of protective coal pillar were studied based on FLAC3D simulation software.The research shows that:increas-ing the size of coal pillars can increase the stability of coal pillars and improve the support capacity of coal pillars;stress concentration will appear inside the coal pillar,the increase of coal pillar size will reduce the degree of stress concentration.The research results pro-vide theoretical guidance for the failure and instability of coal pillars and provide a theoretical basis for the safe production of deep mines.关键词
保护煤柱/数值模拟/煤柱尺寸/应力演化/塑性区扩展Key words
protective coal pillar/numerical simulation/coal pillar size/stress evolution/plastic zone expansion分类
矿业与冶金引用本文复制引用
谢方鹏,侯记川,李慧波,崔超超..动载冲击作用下煤柱动力响应特征数值模拟研究[J].煤炭科技,2023,44(6):92-97,6.
