三维地震勘探在山西复杂山区的应用效果
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摘要
本区位于吕梁山脉中段东翼,晋中盆地的西缘。由于构造运动所致,西缘山区不断升起,形成构造剥蚀成因的低山及中高山地形。地形高差大,相对高差最大为467.8m。测区内2号煤、3号煤大部分地段已被采掘。8号煤、9号煤局部地段被采空,由于采空区的存在使得深层地震地质条件变复杂。试验确定生产技术参数;在资料处理中针对山区的特点,重点作了静校正、叠前去噪、空变切除等方法,提高信噪比,保证反射同相轴的连续性;利用三维地震数据体水平切片、层拉平切片等多种方法对断层、采空区、陷落柱进行解释。根据所取得的地质成果证明了在复杂山区开展三维地震勘探可以取得良好的勘探效果,为矿井建设提供了地质依据。
Located in the east wing of Lvliang Mountain Range,the west margin of Jinzhong Basin,the study area is characterized by such terrain feature which the differences between the higher and lower hill lands are great.The biggest difference of height is up to 467.8m.The existence of underground goaf caused complex of seismic conditions for geophysical survey.In order to acquire the data for the construction of mine shaft,the paper introduced the work method for determination of technical parameters,the method of data process for increasing signal-noise ratio which could keep the continuity of reflection events.The faults,goafs and collapse columns were explained by horizontal slice and level flared out the slice of three dimensional earthquake data in practice.
Located in the east wing of Lvliang Mountain Range,the west margin of Jinzhong Basin,the study area is characterized by such terrain feature which the differences between the higher and lower hill lands are great.The biggest difference of height is up to 467.8m.The existence of underground goaf caused complex of seismic conditions for geophysical survey.In order to acquire the data for the construction of mine shaft,the paper introduced the work method for determination of technical parameters,the method of data process for increasing signal-noise ratio which could keep the continuity of reflection events.The faults,goafs and collapse columns were explained by horizontal slice and level flared out the slice of three dimensional earthquake data in practice.
引文
[1]陆基孟,王永刚.地震勘探原理(第三版)[M].北京:中国石油大学出版社,2009.
[2]吴有信,煤矿采区三维地震资料解释中的切片技术及其应用[J].中国煤田地质,2005,17.
[3]唐建益,方正.煤矿采区实用地震勘探技术[M].北京:煤炭工业出版社,1998.
[4]尹俊清,张玉军.复杂条件下煤田三维地震勘探应用实例[J].中国煤炭地质,2010,22(8):37-38.
[5]卢凤豪,徐中华,牛小军.山区地震数据采集方法的技术难点与对策[J].中国煤田地质,2006,18(增刊).
[2]吴有信,煤矿采区三维地震资料解释中的切片技术及其应用[J].中国煤田地质,2005,17.
[3]唐建益,方正.煤矿采区实用地震勘探技术[M].北京:煤炭工业出版社,1998.
[4]尹俊清,张玉军.复杂条件下煤田三维地震勘探应用实例[J].中国煤炭地质,2010,22(8):37-38.
[5]卢凤豪,徐中华,牛小军.山区地震数据采集方法的技术难点与对策[J].中国煤田地质,2006,18(增刊).
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