液态CO_2相变破岩振动信号能量分布特征
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摘要
针对液态CO_2相变破岩,设计振动信号监测试验,基于小波包变换分析振动信号能量分布规律。结果表明:液态CO2相变破岩振动信号主振频带与振动信号方向及传播距离相关性较小,基本位于0~4 Hz子频带,但主振频率对应能量分布百分比随着传播距离增加逐渐降低。随传播距离的增加,垂向振动信号高频段能量百分比逐渐增加,低频段能量百分比逐渐降低,且在中高频附近出现与主振频带对应能量百分比逐渐接近的"子中心"频带。同一测点不同方向频率能量分布百分比在0~100 Hz频带存在一定差异,但在其他频域内基本一致。
The vibration signal energy distribution analysis of rock breaking by liquid CO_2 phase transition is conducted based on wavelet packet transform under the designed test. The results show that the master frequency band of the signal has little relationship between the direction and propagation,and the frequency is among the 0 ~4 Hz sub-band. The energy percentage of the master frequency band decreases with the propagation. In addition,the energy percentage of high frequency band of the vibration signal increases gradually with the propagation,and decreases gradually in the low frequency band. The sub-center band arises in the vicinity of the middle and high frequency,and the energy percentage is close to master frequency band. The frequency energy distribution percentage in different directions has a certain difference in the frequency band 0 ~ 100 Hz,but it is almost the same in other frequency band.
The vibration signal energy distribution analysis of rock breaking by liquid CO_2 phase transition is conducted based on wavelet packet transform under the designed test. The results show that the master frequency band of the signal has little relationship between the direction and propagation,and the frequency is among the 0 ~4 Hz sub-band. The energy percentage of the master frequency band decreases with the propagation. In addition,the energy percentage of high frequency band of the vibration signal increases gradually with the propagation,and decreases gradually in the low frequency band. The sub-center band arises in the vicinity of the middle and high frequency,and the energy percentage is close to master frequency band. The frequency energy distribution percentage in different directions has a certain difference in the frequency band 0 ~ 100 Hz,but it is almost the same in other frequency band.
引文
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[17]朱权洁,姜福兴,于正兴,等.爆破震动与岩石破碎微震信号能量分布特征研究[J].岩石力学与工程学报,2012,31(4):723-730.ZHU Quan-jie,JIANG Fu-xing,YU Zheng-xing,et al.Study on energy distribution characters about blasting vibration and rock fracture microseismic blasting[J].Chinses Journal of Rock Mechanics and Engineering,2012,31(4):723-730.(in Chinses)
[18]凌同华,李夕兵.地下工程爆破振动信号能量分布特征的小波包分析[J].爆炸与冲击,2004,24(1):63-68.LING Tong-hua,LI Xi-bing.The features of energy distribution for blast vibration signals in underground engineering by wavelet packet analysis[J].Explosion and Shock Waves,2004,24(1):63-68.(in Chinses)
[19]单仁亮,白瑶,宋永威,等.冻结立井模型爆破振动信号的小波包分析[J].煤炭学报,2016,41(8):1923-1932.SHANG Ren-liang,BAI Yao,SONG Yong-wei,et al.Wavelet packer analysis of blasting signals of freezing blasting shaft model[J].Journal of China Coal Society,2016,41(8):1923-1932.(in Chinses)
[2]KRISTINA P,JOHN M S,FARRUKH A,et al.Cardox system brings benefits in the mining of large coal:ANON[J].Coal International,1995,243(1):27-28.
[3]郭志兴.液态二氧化碳爆破筒及现场试爆[J].爆破,1994,11(3):72-74.GOU Zhi-xing.Liquid CO2blasting drum and on-site test explosion[J].Blasting,1994,11(3):72-74.(in Chinses)
[4]徐颖.高压气体爆破采煤技术的发展及其在我国的应用[J].爆破,1998,15(1):67-69.XU Yin.Development of coal mining technology in high pressure gas blasting and its application in China[J].Blasting,1998,15(1):67-69.(in Chinses)
[5]SINGH S P.Non-explosive applications of the PCF concept for underground excavation[J].Tunnelling&Underground Space Technology,1998,13(3):305-311.
[6]朱拴成,周海丰,李浩荡.二氧化碳炮处理综采工作面巷道三角区悬顶[J].煤矿安全,2013,44(8):144-146.ZHU Shuan-cheng,ZHOU Hai-feng,LI Hao-dang.The application of carbon dioxide gun in processing hanging arch at triangle area of fully mechanized mining face roadway[J].Safety in Coal Mines,2013,44(8):144-146.(in Chinses)
[7]张悦,张民波,朱天玲,等.低透气性煤层CO2增透预裂技术应用[J].科技导报,2013,31(23):36-39.ZHANG Yue,ZHANG Min-bo,ZHU Tian-ling,et al.Application of CO2anti-reflection pre-split technology in low permeability coal seam[J].Science&Technology Review,2013,31(23):36-39.(in Chinses)
[8]孙建中.基于不同爆破致裂方式的液态二氧化碳相变增透应用研究[D].徐州:中国矿业大学,2015.SUN jian-zhong.Applied research on permeability increasing by liquid carbon dioxide phase transition blasting based on different initiating condition[D].Xuzhou:China University of Mining and Technology,2015.(in Chinses)
[9]董庆祥,王兆丰,韩亚北,等.液态CO2相变致裂的TNT当量研究[J].中国安全科学学报,2014,24(11):84-88.DONG Qing-xiang,WANG Zhao-feng,HAN Ya-bei,et al.Research on TNT equivalent of liquid CO2 phase-transition fracturing[J].China Safety Science Journal,2014,24(11):84-88.(in Chinses)
[10]周西华,门金龙,宋东平,等.煤层液态CO2爆破增透促抽瓦斯技术研究[J].中国安全科学学报,2015,25(2):60-65.ZHOU Xi-hua,MEN Jin-long,SONG Dong-ping,et al.Research on increasing coal seam permeability and promoting gas drainage with liquid CO2blasting[J].China Safety Science Journal,2015,25(2):60-65.(in Chinses)
[11]周西华,门金龙,宋东平,等.液态CO2爆破煤层增透最优钻孔参数研究[J].岩石力学与工程学报,2016,35(3):524-529.ZHOU Xi-hua,MEN Jin-long,SONG Dong-ping,et al.Research on optimal borehole parameters of antireflection in coal seam by liquid CO2 blasting[J].Journal of Rock Mechanics and Engineering,2016,35(3):524-529.(in Chinses)
[12]中国生,熊正明.基于小波包能量谱的建(构)筑物爆破地震安全评估[J].岩土力学,2010,31(5):1522-1528.ZHONG Guo-sheng,XIONG Zheng-ming.Safety assessment of structure by blasting seism based on wavelet packet energy spectra[J].Rock and Soil Mechanics,2010,31(5):1522-1528.(in Chinses)
[13]李洪涛,卢文波,舒大强,等.爆破地震波的能量衰减规律研究[J].岩石力学与工程学报,2010,29(S1):3364-3369.LI Hong-tao,LU Wen-bo,SHU Da-qiang,et al.Study of energy attenuation law of blast-induced seismic wave[J].Chinses Journal of Rock Mechanics and Engineering,2010,29(S1):3364-3369.(in Chinses)
[14]DAUBECHIES I.Ten Lecture on Wavelet[M].Philadelphia:SIMA Publ,1992.
[15]冉启文,王建赜.小波变换及其在时-频分析中的应用[J].数理统计与管理,1999,18(3):56-59.RAN Qi-wen,WANG Jian-ze.Wavelet transform and its application in time-frequency analysis[J].Journal of Applied Statistics and Management,1999,18(3):56-59.(in Chinses)
[16]凌同华,李夕兵.多段微差爆破振动信号频带能量分布特征的小波包分析[J].岩石力学与工程学报,2005,24(7):1117-1122.LING Tong-hua,LI Xi-bing.Analysis of energy distributions of millisecond blast vibration signal using the wavelet packet method[J].Chinses Journal of Rock Mechanics and Engineering,2005,24(7):1117-2005.(in Chinses)
[17]朱权洁,姜福兴,于正兴,等.爆破震动与岩石破碎微震信号能量分布特征研究[J].岩石力学与工程学报,2012,31(4):723-730.ZHU Quan-jie,JIANG Fu-xing,YU Zheng-xing,et al.Study on energy distribution characters about blasting vibration and rock fracture microseismic blasting[J].Chinses Journal of Rock Mechanics and Engineering,2012,31(4):723-730.(in Chinses)
[18]凌同华,李夕兵.地下工程爆破振动信号能量分布特征的小波包分析[J].爆炸与冲击,2004,24(1):63-68.LING Tong-hua,LI Xi-bing.The features of energy distribution for blast vibration signals in underground engineering by wavelet packet analysis[J].Explosion and Shock Waves,2004,24(1):63-68.(in Chinses)
[19]单仁亮,白瑶,宋永威,等.冻结立井模型爆破振动信号的小波包分析[J].煤炭学报,2016,41(8):1923-1932.SHANG Ren-liang,BAI Yao,SONG Yong-wei,et al.Wavelet packer analysis of blasting signals of freezing blasting shaft model[J].Journal of China Coal Society,2016,41(8):1923-1932.(in Chinses)