昆明盆地基底断裂地震勘探测线设计及施工参数试验分析
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摘要
为了对昆明市活断层构造的深浅关系有更深入的了解,在浅层地震反射勘探的基础上,布设了一条东西向、横跨昆明盆地的中深层探测剖面KM4测线,通过对测线参数的试验与分析,确定了适合昆明盆地反射地震勘探的施工参数,采用该施工参数,开展了有效勘探深度为2～3km的中深层反射地震勘探,确定了目标区隐伏活断层在盆地深部与盆地基底展布的异同及空间关系,探测到了昆明盆地深部断层的基本位置,确定了浅部断层与盆地基底断裂间的关系。对该测线的设计和参数采集试验分析,为城市和山区的活断层探测提供了宝贵的经验。
In order to have a further understanding for the distribution of depth of active faults in Kunming,we deployed an EW-trending KM4 exploration line crossing mid-deep layer detection profile in Kunming Basin on the basis of the exploration of shallow seismic reflection.Through the experiment and analysis of the construction parameters,we determined the parameters fit for reflection exploration of Kunming Basin,carried out mid-deep layer seismic reflection exploration(2-3 km effective exploration depth),and gave the spatial relationship of active concealed faults in the deep part and basement of studied area,the location of deep faults,and the relationship between shallow faults and basement faults in the basin.This work provides cherish experiences for exploring active faults in urban and mountainous areas.
In order to have a further understanding for the distribution of depth of active faults in Kunming,we deployed an EW-trending KM4 exploration line crossing mid-deep layer detection profile in Kunming Basin on the basis of the exploration of shallow seismic reflection.Through the experiment and analysis of the construction parameters,we determined the parameters fit for reflection exploration of Kunming Basin,carried out mid-deep layer seismic reflection exploration(2-3 km effective exploration depth),and gave the spatial relationship of active concealed faults in the deep part and basement of studied area,the location of deep faults,and the relationship between shallow faults and basement faults in the basin.This work provides cherish experiences for exploring active faults in urban and mountainous areas.
引文
邓起东.2002.城市活动断裂探测和地震危险性评价问题[J].地震地质,24(04):601-604.
方盛明,张先康,刘保金,等.2002.探测大城市活断层的地球物理方法[J].地震地质,24(4):606-612.
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姜朝松,周瑞奇,胡耀雄.2003.昆明盆地的地质构造特征[J].地震研究,26(1):68-75.
李桂林,梁运基,王德志,等.2004.渐变观测系统的设计原则及其应用[J].石油地球物理勘探,(4):101-104.
刘祖珉.2007.城市工程中灵活宽线地震勘探及数据处理研究[D].成都:成都理工大学.
潘纪顺,刘保金,朱金芳,等.2002.城市活断层高分辨率地震勘探震源对比试验研究[J].地震地质,24(04):533-539.
杨润海,许昭永,王彬,等.1999.多波浅层地震勘探中的断层识别[J].地震研究,22(3):280-283.
俞维贤,谢英情,张建国,等.2004.昆明盆地周边地区主要断裂活动时代研究[J].地震研究,27(4):67-72.
JSGC-04,中国数字地震观测网络技术规程[S].
方盛明,张先康,刘保金,等.2002.探测大城市活断层的地球物理方法[J].地震地质,24(4):606-612.
姜朝松,樊友心,邵德晟,等.1999.昆明市地面沉降[M].昆明:云南科技出版社.
姜朝松,周瑞奇,胡耀雄.2003.昆明盆地的地质构造特征[J].地震研究,26(1):68-75.
李桂林,梁运基,王德志,等.2004.渐变观测系统的设计原则及其应用[J].石油地球物理勘探,(4):101-104.
刘祖珉.2007.城市工程中灵活宽线地震勘探及数据处理研究[D].成都:成都理工大学.
潘纪顺,刘保金,朱金芳,等.2002.城市活断层高分辨率地震勘探震源对比试验研究[J].地震地质,24(04):533-539.
杨润海,许昭永,王彬,等.1999.多波浅层地震勘探中的断层识别[J].地震研究,22(3):280-283.
俞维贤,谢英情,张建国,等.2004.昆明盆地周边地区主要断裂活动时代研究[J].地震研究,27(4):67-72.
JSGC-04,中国数字地震观测网络技术规程[S].
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