高阶段大直径深孔爆破动载下二步骤采场稳定性研究  

Study on the two-step stope stability under the bearing of high-stage large-diameter long-hole blasting dynamic loads

作　　者：陈刚 陈资南 党建东 阚忠辉 刘胤 邱贤阳[2] 史秀志[2] Chen Gang;Chen Zinan;Dang Jiandong;Kan Zhonghui;Liu Yin;Qiu Xianyang;Shi Xiuzhi(Anhui Tongguan(Lujiang)Mining Industry Co.,Ltd.;School of Resources and Safety Engineering,Central South University)

机构地区：[1]安徽铜冠(庐江)矿业有限公司 [2]中南大学资源与安全工程学院

出　　处：《黄金》2023年第11期23-27,共5页Gold

基　　金：国家重点研发计划项目(2022YFC2904602)。

摘　　要：沙溪铜矿采用深孔阶段空场嗣后充填采矿法和高阶段大直径深孔落矿方式,具有生产能力大、采矿成本低和作业条件安全等优点,但也伴随着更大的爆破振动和冲击。在二步骤采场回采时,两侧充填体在受静载作用的同时还受到明显的爆破动载影响。采用Flac 3D软件对二步骤采场边孔采用不同装药结构下的稳定性进行模拟,分析了充填体边帮在动态荷载下的动力响应,揭示了边孔装药结构与充填体边帮稳定性之间的关系,为矿山爆破方案的选取提供依据。Shaxi Copper Mine adopts the long-hole sublevel open stope and subsequent backfill mining method and the high-stage large-diameter long-hole caving mining method,which has the advantages of large production capa-city,low mining cost,and safe working conditions,but also accompanied by greater blasting vibration and impact.During mining in the two-step stope,the filling bodies on both sides are not only subjected to static loads but also obvious dynamic loads.Flac 3D software was used to simulate the stability of the two-step stope side holes under different charging structures,analyze the dynamic response of the filling body sides under dynamic loads,and reveal the relationship between the charging structure of side holes and the stability of filling body sides,providing a basis for the selection of mine blasting scheme.

关 键 词：高阶段 深孔爆破 二步骤 爆破动载 Flac 3D软件 稳定性 

分 类 号：TD235[矿业工程—矿井建设]