石英二长闪长玢岩单轴岩爆试验声发射前兆特征研究
|
摘要
采用MTS 815电液伺服测试系统与PCI-Ⅱ型声发射监测系统,对石英二长闪长玢岩样进行单轴加载岩爆模拟试验。根据试验过程中声发射信号的活跃程度,将声发射振铃计数划分为4个时期,分别为初始密集期、平静期、峰前密集期和岩爆期,并结合非均匀性指标Cv值的峰值及增长趋势,研究试件在岩爆模拟试验过程中的声发射信号前兆特征。结果显示,在平静期内声发射振铃计数表现为低值稀疏,峰前密集期表现为密集增长,及其非均匀性指标Cv值的"突增"现象,可作为该类岩石岩爆发生的声发射前兆特征信号。
Using MTS 815 electro-hydraulic servo test system and PCI-II type acoustic emission monitoring system,uniaxial loading rock burst simulation tests were carried out on quartz diorite porphyrite samples.According to the active degree of acoustic emission signal during the test,the acoustic emission ringing count was divided into four periods,namely,initial dense period,quiet period,pre-peak dense period and rock burst period.And combined with the peak value and the increasing trend of the inhomogeneity index Cv,the precursor characteristics of acoustic emission signal in rock burst simulation test were studied.The results showed that in the quiet period,the number of acoustic emission ringing count showed a low value of sparse,while in the density period before peak it showed a dence growth,and a sudden increase of the inhomogeneity index Cv value.It could be used as the acoustic emission precursor characteristic signal in rock burst of this kind of rocks.
Using MTS 815 electro-hydraulic servo test system and PCI-II type acoustic emission monitoring system,uniaxial loading rock burst simulation tests were carried out on quartz diorite porphyrite samples.According to the active degree of acoustic emission signal during the test,the acoustic emission ringing count was divided into four periods,namely,initial dense period,quiet period,pre-peak dense period and rock burst period.And combined with the peak value and the increasing trend of the inhomogeneity index Cv,the precursor characteristics of acoustic emission signal in rock burst simulation test were studied.The results showed that in the quiet period,the number of acoustic emission ringing count showed a low value of sparse,while in the density period before peak it showed a dence growth,and a sudden increase of the inhomogeneity index Cv value.It could be used as the acoustic emission precursor characteristic signal in rock burst of this kind of rocks.
引文
[1]腾山邦久.声发射(AE)技术的应用[M].冯夏庭,译.北京:冶金工业出版社,1996.
[2]袁振明,马羽宽,何泽云.声发射技术及其应用[M].北京:机械工业出版社,1985.
[3]赵毅鑫,姜耀东,祝捷,等.煤岩组合体变形破坏前兆信息的试验研究[J].岩石力学与工程学报,2008,27(2):339-346.
[4]刘滨,刘泉声.岩爆孕育发生过程中的微震活动规律研究[J].采矿与安全工程学报,2011,28(2):174-180.
[5]黄满斌.深埋隧道岩爆机理与微震监测预警初探[D].大连:大连理工大学,2011.
[6]赵周能,冯夏庭,陈炳瑞,等.深埋隧洞微震活动区与岩爆的相关性研究[J].岩土力学,2013,34(2):491-497.
[7]谭信荣,陈寿根,杨家松.基于微震监测的岩爆预报在引水隧洞施工中的运用[J].水利水电技术,2013,44(6):73-76.
[8]张建忠.闽西南某隧道高地应力特征及隧道岩爆预测研究[J].隧道建设,2013,33(3):183-189.
[9]Bagaraja S,Ridho K W,Nuhindro P W.Rockburst prediction of a cut and fill mine by using energybalance and induced stress[J].Procedia Earth andPlanetary Science,2013(6):426-434.
[10]张艳博,李健,刘祥鑫,等.水对花岗岩巷道岩爆红外辐射特征的影响[J].辽宁工程技术大学学报(自然科学版),2015(4):453-458.
[11]张艳博,李健,刘祥鑫,等.巷道岩爆红外辐射前兆特征实验研究[J].采矿与安全工程学报,2015(5):786-792.
[12]袁子清,唐礼忠,杨小聪.有岩爆倾向岩石的声发射特征试验研究[J].金属矿山,2008(7):132-135.
[13]王晓青.地震前兆群体空间非均匀性指标Cv值及其应用问题探讨[J].地震,2004(4):126-130.
[14]王晓青,陈学忠,李志雄,等.地震前兆群体空间非均匀性指标Cv值研究[J].中国地震,1999(3):3-13.
[15]王凯英,马胜利,刘力强,等.地震前兆时空非均匀性指标Cv值的实验检验[J].地震学报,2002(1):82-89.
[16]张艳博,李健,刘祥鑫,等.水对花岗岩巷道岩爆声发射特征影响实验研究[J].矿业研究与开发,2015,35(6):82-83.
[17]刘学文,林吉中,袁祖贻.应用声发射技术评价材料疲劳损伤的研究[J].中国铁道科学,1997,18(4):74-81.
[18]曹凤娟,焦明若,王海燕,等.辽宁地区前兆异常空间分布的集中性与非均匀性研究[J].地震,2013(1):127-140.
[2]袁振明,马羽宽,何泽云.声发射技术及其应用[M].北京:机械工业出版社,1985.
[3]赵毅鑫,姜耀东,祝捷,等.煤岩组合体变形破坏前兆信息的试验研究[J].岩石力学与工程学报,2008,27(2):339-346.
[4]刘滨,刘泉声.岩爆孕育发生过程中的微震活动规律研究[J].采矿与安全工程学报,2011,28(2):174-180.
[5]黄满斌.深埋隧道岩爆机理与微震监测预警初探[D].大连:大连理工大学,2011.
[6]赵周能,冯夏庭,陈炳瑞,等.深埋隧洞微震活动区与岩爆的相关性研究[J].岩土力学,2013,34(2):491-497.
[7]谭信荣,陈寿根,杨家松.基于微震监测的岩爆预报在引水隧洞施工中的运用[J].水利水电技术,2013,44(6):73-76.
[8]张建忠.闽西南某隧道高地应力特征及隧道岩爆预测研究[J].隧道建设,2013,33(3):183-189.
[9]Bagaraja S,Ridho K W,Nuhindro P W.Rockburst prediction of a cut and fill mine by using energybalance and induced stress[J].Procedia Earth andPlanetary Science,2013(6):426-434.
[10]张艳博,李健,刘祥鑫,等.水对花岗岩巷道岩爆红外辐射特征的影响[J].辽宁工程技术大学学报(自然科学版),2015(4):453-458.
[11]张艳博,李健,刘祥鑫,等.巷道岩爆红外辐射前兆特征实验研究[J].采矿与安全工程学报,2015(5):786-792.
[12]袁子清,唐礼忠,杨小聪.有岩爆倾向岩石的声发射特征试验研究[J].金属矿山,2008(7):132-135.
[13]王晓青.地震前兆群体空间非均匀性指标Cv值及其应用问题探讨[J].地震,2004(4):126-130.
[14]王晓青,陈学忠,李志雄,等.地震前兆群体空间非均匀性指标Cv值研究[J].中国地震,1999(3):3-13.
[15]王凯英,马胜利,刘力强,等.地震前兆时空非均匀性指标Cv值的实验检验[J].地震学报,2002(1):82-89.
[16]张艳博,李健,刘祥鑫,等.水对花岗岩巷道岩爆声发射特征影响实验研究[J].矿业研究与开发,2015,35(6):82-83.
[17]刘学文,林吉中,袁祖贻.应用声发射技术评价材料疲劳损伤的研究[J].中国铁道科学,1997,18(4):74-81.
[18]曹凤娟,焦明若,王海燕,等.辽宁地区前兆异常空间分布的集中性与非均匀性研究[J].地震,2013(1):127-140.