基于SIGMA/W的露天矿外排土场安全距离确定  

Identification of safety distance of open-pit mine external dump based on SIGMA/W

作　　者：赵立春 ZHAO Lichun(Zhaluteqi Zhahanao'er Coal Industry Co.,Ltd.,Zhaluteqi 029100,China)

机构地区：[1]扎鲁特旗扎哈淖尔煤业有限公司,内蒙古扎鲁特旗029100

出　　处：《露天采矿技术》2025年第1期84-87,共4页Opencast Mining Technology

摘　　要：为了确定软岩露天矿采场开挖边坡与外排土场安全距离,以霍林河二号露天采区北外排土场、采场北帮到界边坡为工程实例,基于有限元法应力-应变和有限元边坡稳定性分析,计算不同安全距离下外排土场对采场开挖边坡变形影响和边坡稳定性研究。结果表明:随着采场开挖边坡与外排土场安全距离增加,外排土场变形量和开挖位置变形明显减少;计算确定了采场开挖边坡距离外排土场安全距离为250 m。In order to determine the safe distance between the excavated slope of the soft rock open-pit mine stope and external dump,taking the slope of the north external dump of Huolin River No.2 Open-pit Mining Area as engineering examples,based on finite element stress-strain and finite element slope stability analysis,the article calculates the influence of external dump on stope excavated slope deformation and slope stability under different safety distances.The results show that as the safety distance between the excavated slope and the external dump increases,the deformation of external dump and excavation position is significantly reduced.The calculation determines that the safe distance between the excavated slope outside the dump is 250 m.

关 键 词：外排土场 边坡稳定性 有限元应力应变 安全距离 边坡变形 

分 类 号：TD824.7[矿业工程—煤矿开采]