成庄矿15~#煤层槽波能量衰减系数CT成像技术的应用研究
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摘要
相比于其他地震波而言,槽波在能量上的变化非常明显,因此通过槽波的衰减系数CT成像可以较为准确的探测出陷落柱、断层等地质构造的发育情况。根据槽波对构造的反应原理,介绍了槽波能量衰减系数CT成像的原理方法,并采用槽波透射法对成庄矿15~#煤层1307工作面进行探测,发现本次探测槽波速度与横波(S波)速度接近,以致降低了速度CT成像的探测准确度,而槽波能量衰减系数层析成像方法的应用,则成功探测出工作面内2个陷落柱影响范围区域与多个断层的延伸区域及影响范围。通过实际应用证明了槽波振幅衰减系数CT成像技术应用探测精度高,抗干扰能力强的特点,并在一定程度上能够弥补速度分析CT成像技术探测的一些缺陷。
Compared with other seismic waves,the energy of in-seam waves varies obviously.Therefore,CT(Computed Tomography)imaging with energy attenuation coefficient of the inseam waves could more accurately detect the development of geological structure,including collapse columns and faults.Based on the response theory of the in-seam waves on the structure,the paper introduces the principle of the CT imaging with the energy attenuation coefficient.With in-seam wave transmission,No.1307 working face of No.15 coal seam in Chengzhuang mine was detected.The results showed that the speed of the detecting in-seam wave was close to the speed of shear wave(S-wave),leading to lower accuracy of the detection with the CT imaging.However,the tomography approach with the in-wave energy attenuation coefficient was applied to successfully detect two collapse column areas and multiple-fault extending areas and their influence range.The practice proved the CT imaging technology could fix some defects of the CT imaging based on the speed analysis with high precision and high anti-interference capacity.
Compared with other seismic waves,the energy of in-seam waves varies obviously.Therefore,CT(Computed Tomography)imaging with energy attenuation coefficient of the inseam waves could more accurately detect the development of geological structure,including collapse columns and faults.Based on the response theory of the in-seam waves on the structure,the paper introduces the principle of the CT imaging with the energy attenuation coefficient.With in-seam wave transmission,No.1307 working face of No.15 coal seam in Chengzhuang mine was detected.The results showed that the speed of the detecting in-seam wave was close to the speed of shear wave(S-wave),leading to lower accuracy of the detection with the CT imaging.However,the tomography approach with the in-wave energy attenuation coefficient was applied to successfully detect two collapse column areas and multiple-fault extending areas and their influence range.The practice proved the CT imaging technology could fix some defects of the CT imaging based on the speed analysis with high precision and high anti-interference capacity.
引文
[1]姬广忠,杨建华,张广学,等.槽波振幅衰减系数CT成像技术应用[J].中国煤炭地质,2015,27(9):75-78.JI Guangzhong,YANG Jianhua,ZHANG Guangxue,et al.Application of In-seam Wave Amplitude Attenuation Coefficient CT Imaging Technology[J].Coal Geology of China,2015,27(9):75-78.
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[6]程建远,李淅龙,张广忠,等.煤矿井下地震勘探技术应用现状与发展展望[J].勘探地球物理进展,2009,32(2):76-82.CHENG Jianyuan,Li Xilong,ZHANG Guangzhong,et al.Current Status and Outlook of Seismic Exploration Applied Underground in Coal Mine[J].Progress In Exploration Geophysics,2009,32(2):76-82.
[7]房立华,吴建平,吕作勇.华北地区基于噪声的瑞利面波群速度层析成像[J].地球物理学报,2009,52(3):663-671.FANG Lihua,WU Jianping,LV Zuoyong.Rayleigh Wave Group Velocity Tomography From Ambient Seismic Noise in North China[J].Chinese Journal of Geophysics,2009,52(3):663-671.
[8]王季.基于EMD算法的煤层透射槽波信号提纯[J].中国煤炭地质,2012,24(2):53-60.WANG Ji.Purification of Coal Seam Transmission In-seam Seismic Signals Based on EMD Algorithm[J].Coal Geology of China,2012,24(2):53-60.
[9]王文德,赵炯,胡继武.弹性波CT技术及应用[J].煤田地质与勘探,1995,24(5):57-60.
[10]何正勤,叶太兰,丁志峰.华北东北部的面波相速度层析成像研究[J].地球物理学报,2009,52(5):1233-1242.HE Zhengqin,YE Tailan,DING Zhifeng.Surface Wave Tomography for the Phase Velocity in the Northeastern Part of North China[J].Chinese Journal of Geophysics,2009,52(5):1233-1242.
[11]刘玉忠.采区槽波探测的适应性分类[J].煤田地质与勘探,1997,25(4):54-57.LIU Yuzhong.The Adaptability Classification of in Seam Wave Surveying in Mining Districts[J].Coal Geology&Exploration(in Chinese),1997,25(4):54-57.
[12]杨元海.槽波速度谱相对透射系数图法[J].煤田地质与勘探,1993,21(4):53-56.
[13]王伟,高星,李松营,等.槽波层析成像方法在煤田勘探中的应用:以河南义马矿区为例[J].地球物理学报,2012,55(3):1054-1062.WANG Wei,GAO Xing,LI Songying,et al.Channel Wave Tomography Method and Its Application in Coal Mine Exploration:An Example from Henan Yima Mining Area[J].Chinese Journal of Geophysics,2012,55(3):1054-1062.
[14]冯宏,文柱展,张仲礼,等.槽波地震仪的发展和DYSD-Ⅲ型矿井数字地震仪[J].煤田地质与勘探,1994,22(3):55-57.
[2]刘天放,潘冬明,李德春,等.槽波地震勘探[M].北京:中国矿业大学出版社,1994.LIU Tianfang,PAN Dongming,LI Dechun,et al.In-seam Seismic Exploration[M].Beijing:China Mining University Press,1994.
[3]王辉.井间地震波衰减成像的几种方法[J].地球物理学进展,2001(3):101-104.WANG Hui.Several Methods of Crosswell Seismic Attenuation Tomography[J].Progress in Geophysics,2001(3):101-104.
[4]王季,李建政,吴海,等.透射槽波能量衰减系数成像与陷落柱探测[J].煤炭科学技术,2015,43(1):108-111.WANG Ji,LI Jianzheng,WU Hai,et al.Tomography of Transmission In-seam Wave Attenuation Coefficient and Detection of Collapse Columns[J].Coal Science and Technology,2015,43(1):108-111.
[5]姬广忠,程建远,朱培民,等.煤矿井下槽波三维数值模拟及频散分析[J].地球物理学报,2012,55(2):645-654.JI Guangzhong,CHENG Jianyuan,ZHU Peimin,et al.3-D Numerical Simulation and Dispersion Analysis of In-seam Wave in Underground Coal Mine[J].Chinese Journal of Geophysics,2012,55(2):645-654.
[6]程建远,李淅龙,张广忠,等.煤矿井下地震勘探技术应用现状与发展展望[J].勘探地球物理进展,2009,32(2):76-82.CHENG Jianyuan,Li Xilong,ZHANG Guangzhong,et al.Current Status and Outlook of Seismic Exploration Applied Underground in Coal Mine[J].Progress In Exploration Geophysics,2009,32(2):76-82.
[7]房立华,吴建平,吕作勇.华北地区基于噪声的瑞利面波群速度层析成像[J].地球物理学报,2009,52(3):663-671.FANG Lihua,WU Jianping,LV Zuoyong.Rayleigh Wave Group Velocity Tomography From Ambient Seismic Noise in North China[J].Chinese Journal of Geophysics,2009,52(3):663-671.
[8]王季.基于EMD算法的煤层透射槽波信号提纯[J].中国煤炭地质,2012,24(2):53-60.WANG Ji.Purification of Coal Seam Transmission In-seam Seismic Signals Based on EMD Algorithm[J].Coal Geology of China,2012,24(2):53-60.
[9]王文德,赵炯,胡继武.弹性波CT技术及应用[J].煤田地质与勘探,1995,24(5):57-60.
[10]何正勤,叶太兰,丁志峰.华北东北部的面波相速度层析成像研究[J].地球物理学报,2009,52(5):1233-1242.HE Zhengqin,YE Tailan,DING Zhifeng.Surface Wave Tomography for the Phase Velocity in the Northeastern Part of North China[J].Chinese Journal of Geophysics,2009,52(5):1233-1242.
[11]刘玉忠.采区槽波探测的适应性分类[J].煤田地质与勘探,1997,25(4):54-57.LIU Yuzhong.The Adaptability Classification of in Seam Wave Surveying in Mining Districts[J].Coal Geology&Exploration(in Chinese),1997,25(4):54-57.
[12]杨元海.槽波速度谱相对透射系数图法[J].煤田地质与勘探,1993,21(4):53-56.
[13]王伟,高星,李松营,等.槽波层析成像方法在煤田勘探中的应用:以河南义马矿区为例[J].地球物理学报,2012,55(3):1054-1062.WANG Wei,GAO Xing,LI Songying,et al.Channel Wave Tomography Method and Its Application in Coal Mine Exploration:An Example from Henan Yima Mining Area[J].Chinese Journal of Geophysics,2012,55(3):1054-1062.
[14]冯宏,文柱展,张仲礼,等.槽波地震仪的发展和DYSD-Ⅲ型矿井数字地震仪[J].煤田地质与勘探,1994,22(3):55-57.