摘要
为研究上覆山4;煤层遗留煤柱对8303工作面的影响,通过煤柱向底板应力传递的理论分析得出遗留煤柱区域垂直应力峰值在煤柱中心线下方。采用数值模拟软件进行遗留煤柱对工作面影响特征的分析,结果表明:遗留煤柱两侧各20 m、实体煤边界60 m范围内应力有所增加,上层采空区边缘靠近实体煤侧30~35 m位置和采空区边缘前方180 m范围内出现应力峰值和升高现象。
In order to study the influence of the coal pillar left over from the overlying mountain 4;coal seam on the 8303 working face,through the theoretical analysis of the stress transfer from the coal pillar to the floor,it is concluded that the peak vertical stress in the area of the remaining coal pillar is below the center line of the coal pillar.The influence characteristics of the remaining coal pillar on the working face are analyzed by using the numerical simulation software.The results show that the stress increases within the range of 20 m on each side of the remaining coal pillar and 60 m on the solid coal boundary,and the stress peak and increase occurred in the range of 30-35 m near the solid coal side and 180 m in front of the edge of the goaf.
作者
缪志炳
Miao Zhibing(Jinneng Holding Coal Industry Group Tashan Coal Mine Co.,Ltd.,Shanxi Datong 037000)
出处
《山东煤炭科技》
2022年第2期19-21,25,共4页
Shandong Coal Science and Technology
关键词
煤柱
应力
采空区
模拟
coal pillar
stress
goaf
simulation
