摘要
本文以杨家村煤矿5煤层沿空巷道为研究对象,针对实际生产过程中提出的煤柱尺寸优化问题,依据极限平衡理论和弹性核理论,通过理论计算与数值模拟,确定了该沿空巷道留设的合理煤柱尺寸为7.5 m。经现场试验,顶板离层量为51 mm,此煤柱尺寸能够满足围岩控制安全生产要求。
This paper takes the roadway along goaf of the 5 Coal Seam in Yangjiacun Coal Mine as the research object,aiming at the optimization problem of coal pillar size proposed in the actual production process,according to the limit balance theory and elastic core theory,through theoretical calculation and numerical simulation,it is determined that the reasonable coal pillar size for the retaining roadway along goaf is 7.5 m.After on-site testing,the separation amount of the roof is 51 mm,and this size of coal pillar can meet the safety production requirements of surrounding rock control.
作者
宋永起
Song Yongqi(College of Energy and Mining Engineering,Shandong University of Science and Technology,Shandong Qingdao 266590)
出处
《山东煤炭科技》
2023年第8期95-97,共3页
Shandong Coal Science and Technology
关键词
沿空
煤柱
尺寸
优化
along goaf
coal pillar
size
optimization
