深井矿山地压灾害微震监测技术应用研究
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摘要
会泽矿区深部8号矿体埋藏深度达1000m,矿体赋存于十余条断层所控制的破碎带中,开采条件十分复杂。根据矿山实际情况,建立一套具有地震学定量分析和可视化解释功能的数字化24通道微震监测系统。详细介绍微震监测系统的组成和性能,采用人工爆破震源对微震监测系统的定位精度进行3次测试,监测范围内的震源定位误差为3.16～6.78m,达到预期目的,证明该监测系统可满足矿山地压监测要求。该系统于2007年8月正式投入使用,在半年监测数据的基础上,通过对井下采集的多种振动波形特征、微震事件b值时序特征及震源应力降等参数进行分析,初步总结深部8号矿体开采过程中的地压活动规律。
The 8th ore body of Huize mineral field is buried in depth of 1 000 m.The ore body exists in crush belt which is controlled by more than 10 faults with the complicated conditions.According to the actual situation during mining,digitalized 24-channel micro-seismic monitoring system was established,which has functions of seismology quantitative analysis and visualization interpretation.The composition and performance of micro-seismic monitor system were described.Using blasting to locate the accuracy of micro-seismic monitoring system for three tests,it is found that the source location error is the 3.16～6.78 m within the scope of monitoring,This result which are achieved from the expected aim proves that the monitoring system can supply monitoring requirements in mine ground pressure.The system has already been formally put into use in August 2007.On the basis of monitoring data in six months,the laws of the activities of ground pressure in 8th ore body are generally summed up after analyzing parameters,such as various characteristics of vibration waveforms,the time sequence characteristics of b value of micro-seismic events and the geostress drop parameters.
The 8th ore body of Huize mineral field is buried in depth of 1 000 m.The ore body exists in crush belt which is controlled by more than 10 faults with the complicated conditions.According to the actual situation during mining,digitalized 24-channel micro-seismic monitoring system was established,which has functions of seismology quantitative analysis and visualization interpretation.The composition and performance of micro-seismic monitor system were described.Using blasting to locate the accuracy of micro-seismic monitoring system for three tests,it is found that the source location error is the 3.16～6.78 m within the scope of monitoring,This result which are achieved from the expected aim proves that the monitoring system can supply monitoring requirements in mine ground pressure.The system has already been formally put into use in August 2007.On the basis of monitoring data in six months,the laws of the activities of ground pressure in 8th ore body are generally summed up after analyzing parameters,such as various characteristics of vibration waveforms,the time sequence characteristics of b value of micro-seismic events and the geostress drop parameters.
引文
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[14]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,2007,26(4):818-824.(YANG Chengxiang,LUO Zhouquan,TANG Lizhong.Study on rule of geostatic activity based on microseismic monitoring technique in deep mining[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(4):818-824.(in Chinese))
[15]曹安业,窦林名,秦玉红,等.微震监测冲击矿压技术成果及其展望[J].煤矿开采,2007,12(1):20-23.(CAO Anye,DOU Linming,QIN Yuhong,et al.Technical products of micro-seism monitoring rock burst and its prospect[J].Coal Mining Technology,2007,12(1):20-23.(in Chinese))
[16]陆菜平,窦林名,吴兴荣,等.岩体微震监测的频谱分析与信号识别[J].岩土工程学报,2005,27(7):772-775.(LU Caiping,DOU Linming,WU Xingrong,et al.Frequency spectrum analysis of microseismic monitoring and signal differentiation of rock material[J].Chinese Journal of Geotechnical Engineering,2005,27(7):772-775.(in Chinese))
[2]陈向华,张世奎,唐绍辉,等.对会泽铅锌矿深部10号矿体岩体质量的评价[J].矿业研究与开发,2002,22(2):10-12.(CNEN Xianghua,ZHANG Shikui,TANG Shaohui,et al.An evaluation on rockmass quality of deep orebody No.10in Huize lead-zinc Mine[J].Mining Research and Development,2002,22(2):10-12.(in Chinese))
[3]陈向华,张世奎,唐绍辉,等.会泽铅锌矿6号矿体稳定性工程地质研究[J].水文地质工程地质,2002,29(4):36-39.(CHEN Xianghua,ZHANG Shikui,TANG Shaohui,et al.A study of engineering geology on stability of orebody No.6at Huize lead-zinc Mine[J].Hydrogeology and Engineering Geology,2002,29(4):36-39.(in Chinese))
[4]姜福兴,XUN L.微震监测技术在矿井岩层破裂监测中的应用[J].岩土工程学报,2002,24(2):147-149.(JIANG Fuxing,XUN L.Application of microseismic monitoring technology of strata fracturing in underground coal mine[J].Chinese Journal of Geotechnical Engineering,2002,24(2):147-149.(in Chinese))
[5]唐礼忠,潘长良,杨承祥,等.冬瓜山铜矿微震监测系统及其应用研究[J].金属矿山,2006,(10):41-44.(TANG Lizhong,PAN Changliang,YANG Chengxiang,et al.Establishment and application of microseismicity monitoring system in Dongguashan copper mine[J].Metal Mine,2006,(10):41-44.(in Chinese))
[6]李庶林,尹贤刚,郑文达,等.凡口铅锌矿多通道微震监测系统及其应用研究[J].岩石力学与工程学报,2005,24(12):2048-2053.(LI Shulin,YIN Xiangang,ZHENG Wenda,et al.Research of multi-channel microseismic monitoring system and its application to Fankou lead-zinc mine[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(12):2048-2053.(in Chinese))
[7]MAOCHEN G E.Efficient mine microseismic monitoring[J].International Journal of Coal Geology,2005,64(1/2):44-56.
[8]YANG C X,LUO Z Q,HU G B,et al.Application of a microseismic monitoring system in deep mining[J].Journal of University of Science and Technology Beijing,2006,14(1):6-8.
[9]杨文东,金星,李山有,等.地震定位研究及应用综述[J].地震工程与工程振动,2005,25(1):14-20.(YANG Wendong,JIN Xing,LI Shanyou,et al.Study of seismic location methods[J].Earthquake Engineering and Engineering Vibration,2005,25(1):14-20.(in Chinese))
[10]赵镇岭,朱元清.上海地震台阵的地震定位方法[J].地震地磁观测与研究,2004,23(2):79-85.(ZHAO Zhenling,ZHU Yuanqing.Location method of shanghai seismic array[J].Seismological and Geomagnetic Observation and Research,2004,23(2):79-85.(in Chinese))
[11]胡宗正,高生,肖建华,等.断层面地震波反射的理论解[J].中国煤田地质,2004,16(3):44-47.(HU Zongzheng,GAO Sheng,XIAO Jianhua,et al.Theoretical seismic reflection induced by faults[J].Coal Geology of China,2004,16(3):44-47.(in Chinese))
[12]MENDECKI A J.Seismic monitoring in mines[M].London:Chapman and Hall,1997.
[13]XUN L,JUSTIN R,PETER H,et al.Microseismic monitoring of highwall mining stability at Moura mine,Australia[J].Exploration Geophysics,2001,32(2),340-345.
[14]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,2007,26(4):818-824.(YANG Chengxiang,LUO Zhouquan,TANG Lizhong.Study on rule of geostatic activity based on microseismic monitoring technique in deep mining[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(4):818-824.(in Chinese))
[15]曹安业,窦林名,秦玉红,等.微震监测冲击矿压技术成果及其展望[J].煤矿开采,2007,12(1):20-23.(CAO Anye,DOU Linming,QIN Yuhong,et al.Technical products of micro-seism monitoring rock burst and its prospect[J].Coal Mining Technology,2007,12(1):20-23.(in Chinese))
[16]陆菜平,窦林名,吴兴荣,等.岩体微震监测的频谱分析与信号识别[J].岩土工程学报,2005,27(7):772-775.(LU Caiping,DOU Linming,WU Xingrong,et al.Frequency spectrum analysis of microseismic monitoring and signal differentiation of rock material[J].Chinese Journal of Geotechnical Engineering,2005,27(7):772-775.(in Chinese))
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