眼前山铁矿边坡稳定性FLAC模拟与损伤分析  

FLAC STABILITY SIMULATION FOR SOUTHERN SLOPE OF YANQIANSHAN IRON MINE AND DAMAGE ANALYSIS

作　　者：林忠明[1] 陈忠辉 王家臣 夏成华 石伟[2] 邓克[2] 张凤涛 

机构地区：[1]中国矿业大学(北京校区)木木工程系,北京100083 [2]鞍山矿业公司,鞍山114000

出　　处：《岩石力学与工程学报》2002年第A02期2393-2398,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金(19902019.50274069)

摘　　要：利用FLAC程序,对鞍山矿业公司眼前山铁矿采场南帮设计和调整开采方案分别进行了模拟研究。以模拟结果的破坏区域和破坏程度来评价边坡的稳定性,从而评价两种开采方案可能形成的破坏情况。计算结果表明原有设计方案深部开采会导致局部破坏,调整方案有效地改善了深部边坡状况。同时,建立一个统计损伤参量来评价岩石在工程卸荷的应力路径下的损伤劣化及空间分布。With FLAC, two mining plans of southern slope of Yanqianshan Iron Mine, Anshan Mining Industry Corp., are simulated. Through failure region and failure extent in the simulations, the stability of high rock slope is studied. Consequently, possible failure of two deeply mining plans is evaluated. The results indicate that the designed deeply mining plan may lead to partial failure, and the adjusted plan effectively improves the condition of deep slope. A simple but effective statistic damage mechanical model was also elected to describe the rock damage worsening and its special distribution under the engineering unloading stress path.

关 键 词：矿业工程 岩体边坡 数值模拟 统计损伤 

分 类 号：TD216[矿业工程—矿井建设] O241[理学—计算数学]