摘要
为进一步实现矿井安全回采,最大限度地保证资源回收率,根据嘉乐泉煤矿实际地质条件,利用极限平衡理论分析计算得出了煤柱合理留设尺寸。结合数值模拟的方法,分析了随工作面回采顺槽煤柱侧向应力分布规律及煤柱屈服破坏范围,得出了煤柱不同区域的具体数值,确定了合理的煤柱留设宽度为15 m。
In order to further to realize safety mining of mine ,the maximum guarantee resource recovery, Jialequan coal mine based on the actual geological conditions,using the theory of limit equilibrium analysis it is concluded that the reasonable design, coal pillar size. And combined with numerical simulation method, analyzed along with the mining face gateway lateral stress distribution of coal pillar and the coal pillars range of yield failure, it is concluded that the concrete numerical value in different areas of the coal pillar, the reasonable design, coal pillar width is 15 m.
出处
《煤炭技术》
北大核心
2017年第10期28-30,共3页
Coal Technology
基金
国家自然科学基金资助项目(51674173)
山西省自然基金面上项目(201601D102038)
关键词
煤柱尺寸
侧向应力
塑性区
数值模拟
width of coal pillar
lateral stress
plastic zone
numerical simulation
