云南会泽铅锌矿微震监测系统应用研究
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摘要
介绍了云南会泽铅锌矿微震监测系统的组成和结构,采用微震事件的定量理论研究与现场回采情况结合的方法,圈定了地压活动区,并运用监测系统先进的地震学定量分析和可视化解释功能,对活动区应力、位移、刚度和稳定性的变化规律进行了研究。研究表明,地压活动相对集中区的变化与井下采掘活动紧密相关,较大规模岩体破坏前会出现如下特征:岩体刚度逐步增大然后又下降;应力水平先下降后又转而增大;微震发生频率及累积视在体积急剧增大等现象。为岩体破坏预测预报提供了方法及理论依据。
The composition and structure of the microseismic monitoring system in Yunnan Huize Lead-zinc Mine were introduced.The ground pressure zones are defined by combining with the quantitative theoretical study on microseismic events and on-site recovery.And using the advanced seismological quantitative analysis and visual interpretation function in monitoring system,the rules of variation in stress,displacement,stiffness and stability of the activity zone were studied.It is indicated that the variation in concentrated area of the ground pressure activities has a close relationship with the underground mining activities.Before large-scale rock destruction,such features will occur as rock stiffness gradually increased and then decreased,stress level increased in turn after decreased,microseismic frequency and accumulated volume sharply increased.These can provide a method and theoretical basis for prediction of the rock mass destruction.
The composition and structure of the microseismic monitoring system in Yunnan Huize Lead-zinc Mine were introduced.The ground pressure zones are defined by combining with the quantitative theoretical study on microseismic events and on-site recovery.And using the advanced seismological quantitative analysis and visual interpretation function in monitoring system,the rules of variation in stress,displacement,stiffness and stability of the activity zone were studied.It is indicated that the variation in concentrated area of the ground pressure activities has a close relationship with the underground mining activities.Before large-scale rock destruction,such features will occur as rock stiffness gradually increased and then decreased,stress level increased in turn after decreased,microseismic frequency and accumulated volume sharply increased.These can provide a method and theoretical basis for prediction of the rock mass destruction.
引文
[1]成云海.微地震定位监测在采场冲击地压防治中的应用[D].山东科技大学.2003.
[2]王春来,吴爱祥,徐必根,等.某深井矿山微震监测系统建立与网络优化研究[C]//第十届全国岩石力学与工程学术大会论文集.北京:中国电力出版社,2008:120-128.
[3]杨永杰.煤岩强度、变形及微震特征的基础试验研究[D].青岛:山东科技大学,1999.
[4]杨志国于润沧郭然深部高应力区采矿研究综述[J].金属矿山,2007(3)6-9.
[5]杨志国,于润沧.微震监测技术在深井矿山中的应用[J].岩石力学与工程学报,2008(5)1067-1072.
[6]杨志国,于润沧,郭然.深井矿山岩爆控制体系构建[J].中国矿业,2008(2):66-68.
[7]杨承祥,罗周全,唐礼忠.基于微震监测技术的深井开采地压活动规律研究[J].岩石力学与工程学报,2007(4):818-824.
[2]王春来,吴爱祥,徐必根,等.某深井矿山微震监测系统建立与网络优化研究[C]//第十届全国岩石力学与工程学术大会论文集.北京:中国电力出版社,2008:120-128.
[3]杨永杰.煤岩强度、变形及微震特征的基础试验研究[D].青岛:山东科技大学,1999.
[4]杨志国于润沧郭然深部高应力区采矿研究综述[J].金属矿山,2007(3)6-9.
[5]杨志国,于润沧.微震监测技术在深井矿山中的应用[J].岩石力学与工程学报,2008(5)1067-1072.
[6]杨志国,于润沧,郭然.深井矿山岩爆控制体系构建[J].中国矿业,2008(2):66-68.
[7]杨承祥,罗周全,唐礼忠.基于微震监测技术的深井开采地压活动规律研究[J].岩石力学与工程学报,2007(4):818-824.
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