摘要
某铜矿矿体品位较高,决定对浅部与深部开采过渡区留设的保安矿柱厚度进行优化。运用有限元软件ANSYS和FLAC3D建立三维数值模拟模型计算分析不同保安矿柱厚度下采场的稳定性。研究结果表明:随着过渡区保安矿柱厚度的减小,顶板的应力集中程度增大,顶板的塑性区深度也逐渐增加,沿-580m水平继续向上回采2个分层,过渡区保安矿柱塑性区未与-560m水平贯通,此时保安矿柱依然能够保证采场的稳定。因此,沿-580m水平继续向上回采2个分层是安全可行的。
Optimization of the thickness of safety pillar in the transition zone between shallow mining and deep mining was made using the finite element software ANSYS and finite differ- ence software FLAC3D to build a three-- dimensional numerical model for calculating and analyzing the stope stability with differ- ent thickness of safety pillar in a copper mine with high grade in ore body. The results showed that with the decrease of safety pil- lar thickness in the transition zone, the degree of stress concen- tration on the roof of stope increased and the plastic zone on the roof increased gradually in depth. With excavation of one or two layers in level --580 m and upward, the plastic of safety pillar in the transition zone didn＇t cut through with -- 560 m level, the safety pillar still could ensure the stability of stope. Therefore, it was safe to excavate two layers in level -- 580 m and upward .
作者
刘志新
陈顺满
贾琪
LIU Zhi-xin CHEN Shun-man JIA Qi(Hunan Chenzhou Mining co. Ltd, Huaihua Hunan 418000, China School of Civil and Environment Engineering,University of Science and Technology Beijing, Beijing 100083, China Jinchuan Group Mine Engineering Branch, Lanzhou Gansu 737100,China)
出处
《化工矿物与加工》
CAS
北大核心
2016年第11期54-58,共5页
Industrial Minerals & Processing
关键词
深部开采
过渡区
矿柱厚度
数值模拟
deep mining
transition zone
pillar thickness
numerical simulation
作者简介
刘志新（1990-），男，内蒙古赤峰人，从事采矿技术管理与岩石力学方面的研究。
通讯作者：陈顺满（1989-），男，湖北黄冈人，博士研究生，研究方向为岩石力学与膏体充填，E-mail：shunman_chen1989@sina．cn。
