| 基于浅层反射地震勘探技术的大庆地区近地表构造特征研究 |
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| 引用本文： | 赵斌,刘财,韦庆海,鹿琪,石金虎,余中元,孙海峰.基于浅层反射地震勘探技术的大庆地区近地表构造特征研究[J].地球物理学报,2018,61(8):3385-3399. |
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| 作者姓名： | 赵斌 刘财 韦庆海 鹿琪 石金虎 余中元 孙海峰 |
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| 作者单位： | 1. 吉林大学地球探测科学与技术学院, 长春 130026;2. 黑龙江省地震局, 哈尔滨 150090;3. 中国地震局地球物理勘探中心, 郑州 450002 |
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| 基金项目： | 中国地震局行业专项"我国地震重点监视防御区活动断层地震危险性评价"大庆城市活动断层探测项目（1521044025，中国地震局与大庆市政府联合投资）资助. |
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| 摘 要： | 目前，对于大庆地区的地质构造研究成果仅局限在深部构造上，该地区从未开展过针对近地表隐伏断裂的探查工作.本文采用浅层反射地震勘探方法，查明了克山—大安断裂嫩江组以上地层的详细地层信息以及断裂的展布形态；同时，在主干断裂上覆的背斜构造中，发现了许多次级断裂，这些次级断裂在前人的成果中并未提出过，并且在本区的断裂-褶皱构造体系中，次级断裂的活动特性同样受主干断裂活动的影响；然后通过钻孔验证，证实了浅层反射地震勘探结果的可靠性，并且确定了次级断裂的最新活动时代；最后综合编制了松辽盆地长垣隆起地区浅层地质模型，并讨论了本地区的构造体系受晚白垩纪以来太平洋板块俯冲方向变化的影响而形成的构造特征.本次研究中的方法和成果可为大庆市城市发展规划、重大工程建设选址和大庆油田安全高效生产等提供科学依据，可为其他地区开展近地表断裂探查提供借鉴和参考，为本地区浅层地质构造后续研究提供了基础资料，填补该地区近地表地球物理勘探构造研究的空白.
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| 关 键 词： | 浅层地震勘探 克山-大安断裂 活断层 近地表 石油地震剖面 |
| 收稿时间： | 2018-04-01 |
Near-surface structural features in the Daqing area derived from shallow reflection seismic exploration |
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| ZHAO Bin,LIU Cai,WEI QingHai,LU Qi,SHI JinHu,YU ZhongYuan,SUN HaiFeng.Near-surface structural features in the Daqing area derived from shallow reflection seismic exploration[J].Chinese Journal of Geophysics,2018,61(8):3385-3399. |
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| Authors: | ZHAO Bin LIU Cai WEI QingHai LU Qi SHI JinHu YU ZhongYuan SUN HaiFeng |
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| Institution: | 1. College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China;2. Earthquake Administration of Heilongjiang Province, Harbin 150090, China;3. Geophysical Prospecting Center, China Earthquake Administration, Zhengzhou 450002, China |
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| Abstract: | At present, the research of geological structures in the Daqing area is limited to the deep subsurface, while lacking exploration to the near-surface buried faults. In this work, we adopted the shallow reflection seismic exploration to ascertain the detailed stratigraphy and the distribution of faults above the Nenjiang Formation. At the same time, we found many secondary faults in the anticlinal structure overlying the main faults, which did nor appear in the previous studies, and noted that the activity characteristics of these secondary faults are also affected by the Keshan-Da'an fault. Then we proved the reliability of shallow seismic exploration results and determined the latest active period of the secondary faults by drilling data. Finally, we established a shallow geological model of the placanticline uplift of the Songliao basin, and discussed the structural characteristics of the tectonic system in this area affected by the change of the subduction of the Pacific plate since the late Cretaceous. The method and results in this study can provide basic scientific evidence for urban development planning, major project construction site selection and the safe and efficient production of the Daqing oil field, as well as a reference to near surface fault exploration in other areas. This work offers basic data for the further research of shallow geological structures, and fills the gap in the structural study of near-surface geophysical exploration in this area. |
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| Keywords: | Shallow seismic exploration Keshan-Da'an fault Active fault Near surface Petroleum seismic profile |
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