Numerical Simulation about Influences of Steep Inclined Coal Pillar after Mining on Laneway
详细信息
- 责任者：Tang Zhi (School of Mechanics and Engineering Liaoning Technical University ; Fuxin 123000 ; China) ; Pan Yishan
- 刊名：The Chinese Journal of Geological Hazard and Control
- 出版年：2010
- 卷期：21(2)
- 关键词：煤矿 ; coal mines ; 采矿 ; mining ; 围岩稳定 ; adjoining rock stability
- 页码：p.64-67
- 图表：7 illus., 1 table, 16 refs.
- 分类号：2000
- issnNo：ISSN1003-8035
- isbnNo：CN11-2825/P
摘要
In order to improve the recovery and economic benefit of the coal mine, ANSYS finite element software is adopted to make numerical simulation for-230～-310 level coal pillar before and after mining, aiming at No.4 groove coal pillar of Changgouyu mine, and it is obtained: 1) after coal pillar mining, total of coal and rock mass is sinking, but it has little influence to-140 level laneway; 2) after mining, the middle position of coal pillar is transition region; and 3) the principal stress of coal pillar nearby-140 level after mining increases. The results obtained by numerical simulation agree well with actual mining, so numerical simulation about influences of steep inclined coal pillar after mining on laneway has certain guiding significance for mining.