摘要
会泽铅锌矿8#矿体埋深大、原岩应力高,局部地段已有岩爆发生,为保证井下安全回采,有必要进行围岩岩爆倾向性方面的研究.根据矿体地质赋存条件,基于岩石Kaiser效应的测试结果,测得了该矿1451～901m中段的地应力方向和大小,同时结合室内岩石力学参数测试结果,采用应力判据,分析了8#矿体深部矿岩岩爆倾向性,总结了现场岩爆特征.研究表明:8#矿体1451～901m中段均有中等至强烈岩爆倾向性,为8#矿体回采顺序、采场结构参数优化和微震监测系统布置提供了基本资料.
The 8^# ore body of Huize Lead ＆ Zinc Mine was depth mining and high ground stress. Rockburst occurred in local area. In order to ensure safe mining underground, the research on rockburst proneness must be done. This paper, based on the rock Kaiser effects testing, measured the direction and value of in-situ stress in 1 451 m to 901 m level, combining with the rock mechanics parameters of the 8^# orebody. The rockburst proneness of the depth orebody and rockmass were showed that the base data for arrangement. analyzed by means of the stress criterion, and summarized characteristics of rockburst on-site. The result rock mass had from medium to strong rockburst proneness in 901 level to 1451 level, which provided the stopping sequence, structural parameter optimization of stope and microseismic monitoring system
出处
《矿业工程研究》
2010年第1期24-26,共3页
Mineral Engineering Research
基金
国家"十一五"科技支撑计划资助项目(2006BAB02A01)
关键词
深井开采
岩爆倾向性
高应力
岩芯饼化
声发射
微震监测
deep mine
rock burst proneness
high underground stress
rock-core disking
acoustic emission
microseismic monitoring
