二维地震勘探方法在南通区调工作中的应用
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摘要
通过二维地震勘探方法在南通地区松散沉积层中的运用,发现了5个较明显的反射波组,可与地层中的5个沉积界面较好地对应,对区内松散沉积层的展布有了较直观的揭示。根据对波组连续性的分析,揭示了5条断裂及一些古河谷的存在,并对以往推测的可能存在的长江沿江断裂有了进一步的验证。二维地震勘探方法对区内基底的揭示效果也很好,发现在小海镇一带有较明显的潜山存在。结果表明,在松散层深覆盖区运用二维地震勘探方法完成区域地质调查的一些任务是可行的。
The 2D seismic method was applied in 2008 for geological survey on loose sediments in Nantong,Jiangsu Province,China with the seismic survey line about 20km long.The application indicates that the 2D seismic method can reflect intuitively the distribution characteristic of sediments stratum.5 layers are revealed and can be contrasted clearly with wave groups.By analysing the continiuty of waves,the speculated Yangtze River fault(F1) is validated,and other 5 faults and 1ancient river valley are displayed also.In the mean time,the 2D seismic method has very good effect on displaying the rock base of this area and some hidden hills in Xiaohai town.The results indicate that the 2D seismic method can be taken in some regional geological survey in the deep sediments covered area.
The 2D seismic method was applied in 2008 for geological survey on loose sediments in Nantong,Jiangsu Province,China with the seismic survey line about 20km long.The application indicates that the 2D seismic method can reflect intuitively the distribution characteristic of sediments stratum.5 layers are revealed and can be contrasted clearly with wave groups.By analysing the continiuty of waves,the speculated Yangtze River fault(F1) is validated,and other 5 faults and 1ancient river valley are displayed also.In the mean time,the 2D seismic method has very good effect on displaying the rock base of this area and some hidden hills in Xiaohai town.The results indicate that the 2D seismic method can be taken in some regional geological survey in the deep sediments covered area.
引文
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岳亚东,柴志顺.2008.二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,27(3):129—130.YUE Ya-dong,CHAI Zhi-shun.2008.Application of2D seismic method in looking for coal in Dayan Zhani river area of Inner-Mongolia[J].Coal Technology,27(3):129—130(in Chinese).
刘保金,孙振国,赵成斌,等.1999.延庆怀来地区高分辨率浅地震反射剖面[J].地震地质,21(4):425—430.LIU Bao-jin,SUN Zhen-guo,ZHAO Cheng-bin,et al.1999.Shallow seismic reflection profiling with high resolution in Yanqing-Huailai region[J].Seismology and Geology,21(4):425—430(in Chinese).
缪卫东,李世杰,王润华.2009.长江三角洲北翼J9孔岩心沉积特征及第四纪地层初步划分[J].第四纪研究,29(1):126—134.MIAO Wei-dong,LI Shi-jie,WANG Run-hua.2009.Preliminary study on sedimentary characteristics and stratum divi-sion of J9core in the north wing of the Yangtze River Delta[J].Quaternary Sciences,29(1):126—134(in Chi-nese).
王椿镛,张先康,吴庆举,等.1994.华北盆地滑脱构造的地震学证据[J].地球物理学报,37:620—631.WANG Chun-yong,ZHANG Xian-kang,WU Qing-ju,et al.1994.Seismic evidence of detachment in North China Basin[J].Chinese J Geophys,37:620—631(in Chinese).
王庆海,徐明才.1991.抗干扰高分辨率浅层地震勘探[M].北京:地质出版社.WANG Qing-hai,XU Ming-cai.1991.Shallow Seismic Exploration Method with Anti-disturbance High Resolution[M].Geological Publishing House,Beijing(in Chinese).
王振东.1988.浅层地震勘探应用技术[M].北京:地震出版社.WANG Zhen-dong.1988.Technical Application of the Shallow Seismic Exploration Method[M].Seismlogical Press,Beijing(in Chinese).
吴标云,李从先.1987.长江三角洲第四纪地质[M].北京:地质出版社.WU Biao-yun,LI Cong-xian.1987.Quaternary Geology of Yangtze River Delta[M].Geological Publishing House,Bei-jing(in Chinese).
谢占安,张国栋,付兴深,等.2000.北堡陆地二维地震进展[J].石油与天然气地质,21(4):324—326.XIE Zhan-an,ZHANG Guo-dong,FU Xing-shen,et al.2000.Progress of2-D seismic exploration in on shore,Beipu re-gion[J].Oil&Gas Geology,21(4):324—326(in Chinese).
岳亚东,柴志顺.2008.二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,27(3):129—130.YUE Ya-dong,CHAI Zhi-shun.2008.Application of2D seismic method in looking for coal in Dayan Zhani river area of Inner-Mongolia[J].Coal Technology,27(3):129—130(in Chinese).
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