二维地震构造解译法在霍西煤田郑家寨普查区中的应用
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摘要
为查明工作区断层的性质、特点及延伸情况,了解2号、11号煤层的分布范围,根据勘探区的地震地质条件,结合前期的试验工作成果,确定了地震勘探的工作参数,采用二维地震构造解译法,对获得的勘探数据资料进行处理和解释,结果表明:勘探区2号和11号煤层的赋存形态宏观上为一向SE方向倾的单斜,埋深主要受断裂系统控制;东部埋深大,西北部埋深小,并发育有两个规模较大的褶曲—背斜(S3)、向斜(S1、S2);解释断点7个,利用其中7个断点组合断层两条,落差均大于100 m的(Fd1,Fd2),均为可靠正断层;根据区内反射波组的发育特征,圈定了11煤层控制程度较差的区域,初步认为本区无煤层缺失区。
In order to ascertain the nature, characteristics and extension of faults in the working area, and to understand the distribution range of the No.2 and the No.11 coal seams, we determined the working parameters of seismic exploration according to the seismic geological conditions of the exploration area and combined with the previous experimental results, and used the two-dimensional seismic structure interpretation method to process and interpret the obtained exploration data. The result shows that the main mineable seams in the exploration area were monoclinic dipping toward SE, and the buried depth was mainly controlled by the fault system. The eastern part was buried deep, the northwestern part was buried deep, and the deepest point was in the eastern part of the exploration area. The occurrence of the strata in the area was relatively large, with an inclination of about 4～30°and the maximum inclination was located in the central part of the exploration area. Seven fault points were interpreted, and two faults were combined with seven fault points with a drop greater than 100 m(Fd1, Fd2),both of which were reliable normal faults, and one isolated fault pointed with a drop greater than 20 m(Fd1-1).On this basis, there were two synclines(S1, S2)and one anticline(S3)with larger secondary folds.
In order to ascertain the nature, characteristics and extension of faults in the working area, and to understand the distribution range of the No.2 and the No.11 coal seams, we determined the working parameters of seismic exploration according to the seismic geological conditions of the exploration area and combined with the previous experimental results, and used the two-dimensional seismic structure interpretation method to process and interpret the obtained exploration data. The result shows that the main mineable seams in the exploration area were monoclinic dipping toward SE, and the buried depth was mainly controlled by the fault system. The eastern part was buried deep, the northwestern part was buried deep, and the deepest point was in the eastern part of the exploration area. The occurrence of the strata in the area was relatively large, with an inclination of about 4～30°and the maximum inclination was located in the central part of the exploration area. Seven fault points were interpreted, and two faults were combined with seven fault points with a drop greater than 100 m(Fd1, Fd2),both of which were reliable normal faults, and one isolated fault pointed with a drop greater than 20 m(Fd1-1).On this basis, there were two synclines(S1, S2)and one anticline(S3)with larger secondary folds.
引文
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[3]张晓丹,刘贵忠,张志禹,等.多尺度高阶FDTD逆时偏移在煤田地震勘探中的应用[J].煤炭学报,2018,43(11):3169-3177.
[4]田军.塔里木盆地油气勘探成果与勘探方向[J].新疆石油地质,2019,40(01):1-11.
[5]吴华,张保卫,王凯,等.哈拉湖地区浅层地震勘探可控震源激发参数对比试验[J].物探与化探,2018,42(05):1033-1041.
[6]陈鹏,于常青,韩建光.低频可控震源在哈拉湖冻土区二维地震勘探试验研究[J].地球物理学进展,2018,33(02):562-570.
[7]李章波.基于波动方程和地震照明度的渝西山地煤炭资源二维地震勘探研究[J].矿业安全与环保,2017,44(02):84-87.
[8]李生生.工业广场下伏采空区二维地震勘探技术[J].煤炭技术,2016,35(06):115-116.
[9]付俊清,孙治新,袁燕.二维地震勘探在洛阳找煤中的应用与效果[J].工程地球物理学报,2012,9(02):200-204.
[10]赵禄顺,王千遥,刘芳晓.二维地震勘探技术在新疆哈密地区找煤中的应用[J].西部探矿工程,2014,26(01):111-112+116.
[11]王建军,刘银海.二维地震勘探在南疆沙漠区找煤中的应用[J].煤炭技术,2013,32(08):171-172.
[12]岳亚东,柴志顺.二维地震方法在内蒙古大雁扎尼河区找煤中的应用[J].煤炭技术,2008(03):129-130.