铜坑矿92~#矿柱群回采过程中的声发射监测应用与分析
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摘要
铜坑矿92#矿体的直接顶板就是开采91#矿体时的胶结或者非胶结的空区充填体,并且尚存在未充填采空区45万m3,使92#缓倾斜厚大矿体的上部形成大范围的隐患区,开采条件十分复杂,地压活动非常频繁。根据矿山实际建立了一套多通道岩体声发射监测系统(本文仅取其中的8个通道),对92#矿体的回采过程进行地压活动监测。本文在现场采集监测数据的基础上,对声发射事件数、波形等参数进行了分析,统计得出了铜坑矿92#矿体回采过程中采场应力场与声发射活动频度之间的相关关系。
The direct roof of the 92# orebody in Tongkeng mine is the consolidated or non-consolidated goaf filling when mining the 91# orebody.Furthermore,over 450,000 m3 goaf are still unfilled forming a vast risk zone over the slowly inclined large and thick orebody,which leads to complex mining conditions and frequent geostatic activity.According to the actual situation of Tongkeng mine,a multi-channel AE monitoring system is established(this article only covers eight channels) in order to monitor the ground pressure in the 92# orebody mining.Based on the monitoring data,this paper analyzes parameters such as the number of AE events and wave,and strikes statistically the correlation between the stress field of mining the 92# orebody in Tongkeng mine and the acoustic emission activity frequency.
The direct roof of the 92# orebody in Tongkeng mine is the consolidated or non-consolidated goaf filling when mining the 91# orebody.Furthermore,over 450,000 m3 goaf are still unfilled forming a vast risk zone over the slowly inclined large and thick orebody,which leads to complex mining conditions and frequent geostatic activity.According to the actual situation of Tongkeng mine,a multi-channel AE monitoring system is established(this article only covers eight channels) in order to monitor the ground pressure in the 92# orebody mining.Based on the monitoring data,this paper analyzes parameters such as the number of AE events and wave,and strikes statistically the correlation between the stress field of mining the 92# orebody in Tongkeng mine and the acoustic emission activity frequency.
引文
[1]张银平.岩体声发射与微震监测定位技术与应用[J].工程爆破,2002,8(1):58-61.
[2]程久龙,于师建,王渭明,等.岩体测试与探测[M].北京:地震出版社,2000:127-128.
[3]蒋海昆,张流.岩石微破裂震源过程的声发射研究进展[J].世界地震译丛,1998(3):3-9.
[4]刘建东.基于声发射与微震技术的新型岩体稳定性监测系统与应用[J].有色金属(矿山部分),2008(4):32-35.
[5]张银平.岩体声发射监测定位系统方案的改进设计[J].矿冶,2002(2):9-15.
[6]黄沛生,赵刚.岩体声发射监测定位系统在凡口铅锌矿的应用[J].矿冶,1998(3):14-21.
[2]程久龙,于师建,王渭明,等.岩体测试与探测[M].北京:地震出版社,2000:127-128.
[3]蒋海昆,张流.岩石微破裂震源过程的声发射研究进展[J].世界地震译丛,1998(3):3-9.
[4]刘建东.基于声发射与微震技术的新型岩体稳定性监测系统与应用[J].有色金属(矿山部分),2008(4):32-35.
[5]张银平.岩体声发射监测定位系统方案的改进设计[J].矿冶,2002(2):9-15.
[6]黄沛生,赵刚.岩体声发射监测定位系统在凡口铅锌矿的应用[J].矿冶,1998(3):14-21.
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