| 安庆铜矿深部开采-400 m隔离矿柱稳定性分析 |
| |
| 引用本文： | 张友锋,张耀平,王林. 安庆铜矿深部开采-400 m隔离矿柱稳定性分析[J]. 有色金属科学与工程, 2011, 2(6): 62-67 |
| |
| 作者姓名： | 张友锋 张耀平 王林 |
| |
| 作者单位： | 1.江西理工大学应用科学学院, 江西 赣州 341000 |
| |
| 基金项目： | 江西理工大学校级课题自然科学类资助项目jxxj11152 |
| |
| 摘 要： | 采用拉格朗日非线性程序，数值模拟计算与分析了安庆铜矿l#矿体-400 m水平隔离矿柱在深部矿体开采过程中的力学效应显现规律.研究结果表明:隔离矿柱在上部矿体开采后，因覆盖岩体卸载产生了应力释放，呈现“凸起”垂直位移变形；在深部厚大矿体开采扰动下，隔离矿柱局部区域应力集中，部分区域发生塑性变形，呈现应力拉力拱现象，产生下向变形位移，与矿山常规位移变形监测结果近似.综合分析，隔离矿柱在深部矿体开采过程中整体稳定性良好.
|
| 关 键 词： | 采矿工程 隔离矿柱 深部开采 数值模拟 |
| 收稿时间： | 2011-07-20 |
Stability analysis of -400 m level insulating pillar of deep excavation in Anqing copper mine |
| |
| Affiliation: | 1.School of Applied Science, Jiangxi University of Science and Technology, Ganzhou 341000, China2.Anqing Copper Mine, Anqing 246131, China |
| |
| Abstract: | This paper studies the stability analysis of -400 m level insulating pillar of deep excavation of l# orebody of Anqing Copper Mine with FLAC3D.The results verify that the strain effect diminishes and bump vertical displacement deformation changes in the insulating pillar for the unloading of upper ore -body mining. Due to disturbance of large and thick in-depth mining, stress concentration and parts of the plastic deformation are formed. Tension arch and downward displacement deformation change in the insulating pillar. The displacement deformation approximates conventional displacement deformation monitoring results of the insulating pillar. The overall stability of the insulating pillar in deep mining is good. |
| |
| Keywords: | |
|
| 点击此处可从《有色金属科学与工程》浏览原始摘要信息 |
|
点击此处可从《有色金属科学与工程》下载免费的PDF全文 |
