矿井工作面地质条件震波CT探测模拟试验与应用
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摘要
煤层工作面内存在诸多影响安全生产的地质因素,利用层析成像技术可以进一步查明其速度分布特征并进行地质异常体特征解释。本文通过构建工作面测试模型,利用模型试验确立地震波CT探测技术方法、观测系统布置、数据采集参数、数据处理及地质解释等系统内容。现场探测工程实践结果表明:地震波CT成像精度和分辨率能够满足现场生产技术要求,可对矿井工作面地质异常体进行有效探查。
There are many geological factors that affect the safety production in coal seam workface.The geological anomalies characteristic can be explained according to the velocity distribution of coal seam revealed by the tomography techniques.By building working face test model,using model tests to establish the system contents such as CT detection technology methods of seismic waves,observing system layout,data acquisition parameters,data processing and geological interpretation.The practical results of the site exploration project shows that the CT imaging accuracy and resolution of the seismic waves can meet the on-site production and technical requirements.And the geological anomalies body in the mine workface can be tested and distinguished effectively.
There are many geological factors that affect the safety production in coal seam workface.The geological anomalies characteristic can be explained according to the velocity distribution of coal seam revealed by the tomography techniques.By building working face test model,using model tests to establish the system contents such as CT detection technology methods of seismic waves,observing system layout,data acquisition parameters,data processing and geological interpretation.The practical results of the site exploration project shows that the CT imaging accuracy and resolution of the seismic waves can meet the on-site production and technical requirements.And the geological anomalies body in the mine workface can be tested and distinguished effectively.
引文
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[2]周官群,刘盛东,郭立全,等.采煤工作面地质异常体震波CT探测技术[J].煤炭科学技术,2007,35(4):37-40.Zhou GQ,Liu SD,Guo LQ,et al.Application of seismic wave CT technology to detectgeological abnormal structure in coal mining face[J].Coal Science and Technology,2007,35(4):37-40.
[3]杨文采,李幼铭.应用地震层析成像[M].北京:地质出版社,1993.Yang WC,Li YM.Application of seismic tomography[M].Beijing:Geological PublishingHouse,1993.
[4]王书文,徐圣集,蓝航,等.地震CT技术在采煤工作面的应用研究[J].煤炭科学技术,2012,40(7):24-27.Wang SW,Xu SJ,Lan H,et al.Study on seismic CT technology applied to coal mining face[J].Coal Science and Technology,2012,40(7):24-27.
[5]刘天放,李志聃.矿井地球物理勘探[M].北京:煤炭工业出版社,1993.Liu TF,Li ZD.Mine geophysical exploration[M].Beijing:Coal Industry Press,1993.
[6]刘盛东,吴军,张平松.地下工程震波技术与应用[J].中国煤田地质,2001,13(3):60-61.Liu SD,Wu J,Zhang PS.The underground engineering technique and application of shockwave[J].Coal Geology of China,2001,13(3):60-61.
[7]刘盛东,李承华.地震走时层析成像算法与比较[J].中国矿业大学学报,2000,29(2):211-214.Liu SD,Li CH.Algorithm and comparison of seismic travel time computerized tomographytechnique[J].Journal of China University of Mining and Technology,2000,29(2):211-214.
[8]许琨,吴律,王妙月.改进Moser法射线追踪[J].地球物理学进展,1998,13(4):60-65.Xu K,Wu L,Wang MY.Improved Moser ray trace[J].Progress in Geophysics,1998,13(4):60-65.
[9]阎生存,李珍照,薛桂玉,等.大坝CT中ART算法及其改进探讨[J].武汉大学学报(工学版),2001,34(4):29-34.Yan SC,Li ZZ,Xu GY.Discussion on algebraic reconstruction techniques in computerizedtomography of dams and its improvement[J].Engineering Journal of Wuhan University,2001,34(4):29-34.
[10]赵改善,郝守玲,杨尔皓,等.基于旅行时线性插值的地震射线追踪算法[J].石油物探,1998,37(2):14-24.Zhao GS,Hao SL,Yang EH,et al.Based on the linear travel time interpolation of seismicray tracing algorithm[J].Geophysical Prospecting for Petroleum,1998,37(2):14-24.
[11]赫尔曼.由投影重建图像:CT的理论基础[M].北京:科学出版社,1985.Hermann L.Image reconstruction from projection:The theoretical foundation of CT[M].Beijing:Science Press,1985.
[12]张平松,刘盛东,吴荣新.地震波CT技术探测煤层上覆岩层破坏规律[J].岩石力学与工程学报,2004,23(15):2510-2513.Zhang PS,Liu SD,Wu RX.Observation of overburden failure of coal seam by ct of seismicwave[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(15):2510-2513.
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