摘要
选取某矿山深部岩体进行试验,利用岩爆危险性判据评价岩爆的倾向性,并分析岩爆试验特征.结果表明:含铜磁铁矿具有中等岩爆倾向,其它岩石无岩爆倾向;岩爆倾向性与岩石强度有关,同一岩性岩体,强度越大,弹性能指数越高,岩爆倾向越明显;动态破坏时间与强度无明显相关关系.针对矿山开采情况,提出岩爆防治措施,以降低岩爆发生的可能性,提高井下作业安全.
Based on criterion for rock burst risk,sets of rock samples in the deep mass that come from a mine are used to determine rock burst proneness and analyse on characteristics of the test.Then the test result shows moderate proneness of cupreous magnetite,and no proneness of others.Rock burst proneness is related to rock strength.The higher the strength is,the higher the elastic energy index and the greater the rock burst proneness is.However,there is no significant correlation between rock bust proneness and dynamic destruction time.Based on the actual situation of the mine,several measures of rock burst prevention are put forward to reduce the possibility of blasting and improve the safety of underground production.
作者
刘畅
覃敏
朱青凌
LIU Chang;QIN Min;ZHU Qingling(State Key Laboratoiy of Safety Technology of Metal Mines,Changsha Institute of Mining Research Co.Ltd.,Changsha,Hunan 410012,China)
出处
《福州大学学报（自然科学版）》
CAS
北大核心
2019年第1期113-117,共5页
Journal of Fuzhou University(Natural Science Edition)
基金
国家重点基础研究发展计划973资助项目(2012CB724207)
关键词
深部岩体
岩爆
弹性能
支护
deep mining
rock burst
elastic energy
strength
