Analysis of stability of coal pillars with multi-coal seam strip mining

被引：0
作者：
Zhang Li-ya [1 ]
Deng Ka-zhong [1 ]
Zhu Chuan-guang [1 ]
Xing Zheng-quan [1 ]
机构：
[1] China Univ Min & Technol, Jiangsu Key Lab Resources & Environm Informat Eng, Xuzhou 221116, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2011年 / 21卷
关键词：
multi-coal seam strip mining; FLAC3D; numerical simulation; stability of coal pillar;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Strip mining is one of the efficient measures to control surface subsidence and mining damage. However, the researches on the laws of the geological mining factors to upper and lower pillar's stability are still deficient in multi-coal seam strip mining at present. Based on the three dimension fast Lagrangian analysis of continua (short for FLAC3D) numerical simulation software, the laws of the stress increasing coefficient on the coal pillar and its stability were systematically studied for different depths, different milling widths, different interlayer spacings, different mining thicknesses, different properties of interstratified rock and the spacial relations of the upper and lower pillars in vertical alignment in multi-coal seam strip mining. The function relation between the stress increasing coefficient of upper and lower pillars with the mining depth, mining widths, interlayer spacing, mining thickness, property of interstratified rock and the spatial relationship were obtained.
引用
收藏
页码：S549 / S555
页数：7
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