摘要
以巴彦高勒矿311101工作面巷道间的煤柱留设为工程背景,通过理论计算、数值模拟方法,分析了大采高工作面支承压力分布特点,得出超前支承压力分布范围为22~35 m,峰值距煤壁5 m左右。运用FLAC3D数值模拟软件模拟了不同煤柱宽度下煤柱的稳定性,确定合理的煤柱宽度为25 m,为大采高工作面安全生产及降低巷道间煤柱损失提供了技术保证。
According to the coal pillar design of 311101 working face in Bayangaole mine, analyzing the distribution of abutment pressure in large mining height by theoretical calculation and computer simulation, the distribution field of abutment pressure is 22~35 m, the distance between the peak point and coal wall is 5 m. Then using the numerical simulation software of FLAC3 Dto simulate the stability of coal pillar under different coal pillar width, determining the rational coal pillar width is 25 m, this result provides technical guarantee for the safety production of large mining height and reduce the loss of coal pillar between the roadway.
出处
《煤炭技术》
CAS
北大核心
2015年第9期36-39,共4页
Coal Technology
关键词
煤柱宽度
大采高
支承压力
width of coal pillar
large mining height
abutment pressure
