天津近海海域隐伏活动断层探测资料处理与解释

发布时间：2018-01-05 06:40

本文关键词：天津近海海域隐伏活动断层探测资料处理与解释　出处：《中国地震局工程力学研究所》2016年硕士论文　论文类型：学位论文

【摘要】：河北平原断裂带和张家口—渤海断裂带交汇的天津近海海域是我国东部强震多发区,该区域断裂活动性比较强,构造系统具有发生中强地震的可能。因此查明这些断裂空间位置、展布特征、活动性、几何学特征、运动学特征、相互之间的切割关系和断层分段对地震活动性预测具有科学意义和现实意义。论文依托综合地球物理资料,特别是在综合分析油田系统的地震剖面,收集并重新处理解释了浅层陆地及水上反射地震数据,通过中深层地震探测、浅层人工地震探测、水上人工地震地层探测并辅以钻孔勘探,水上声纳探测等技术,对天津近海海域隐伏断层的几何学特征及活动性进行了重新研究和定位。经过研究分析认为:(1)基本查明了海河断裂海域段、海一断裂、歧北断裂、歧中断裂的空间位置、运动学和几何学特征。在区域重磁电等地球物理数据基础上,通过中、深层地震资料重新构造解译,对浅层人工探测、水上地震地层探测进行了重新处理和成像,并结合钻孔勘探等综合探测方法,明确了天津近海海域范围内海河断裂海域段、海一断裂、歧北断裂、歧中断裂的空间展布位置、几何学与运动学特征。(2)通过浅层人工地震和中深层石油地震资料分析结果,确定了研究区范围内陆域隐伏断裂的规模、空间展布、构造特征及活动性。这些隐伏断裂的确定对地震危险性评价提供了基础数据。(3)通过研究发现,综合地球物理探测是发现隐伏断层的最为有效的简洁方法,而钻探资料则是对预测结果的直接验证。
[Abstract]:The plains of Hebei fault zone and Zhangjiakou Bohai fault zone, the intersection of the coastal waters of Tianjin in eastern China is earthquake prone zone, the area of fault activity is relatively strong, tectonic system with moderate strong earthquakes. So to identify the spatial location, the fault distribution characteristics, activity, geometry, kinematics, cutting relation and fault each section has scientific and practical significance on seismicity prediction. Based on the comprehensive geophysical data, especially in the comprehensive analysis of seismic profile oil system, collecting and re release of the shallow understanding of land and water on the seismic reflection data, through deep seismic exploration, shallow seismic exploration, water artificial seismic exploration with drilling exploration, water sonar detection technology, geometry characteristic and activity of the coastal waters of Tianjin buried fault of heavy New research and positioning. Through research and analysis that: (1) the basic identification of the Haihe fault section of sea waters, a fault, north of Qikou fracture, fracture of the spatial position of SOD, kinematics and geometry. In the area of gravity and electromagnetic geophysical data on the basis of the deep seismic data, re structure interpretation, on shallow artificial seismic stratigraphic detection, water detection re processing and imaging, combined with drillingexploration comprehensive detection method, clear the scope of the coastal waters of Tianjin sea in the Haihe fault section, sea fault, North Qikou fracture, the space distribution of fracture discrimination, geometry and kinematics. (2) through the light artificial earthquake and deep petroleum seismic data analysis results, to determine the area of land buried fault scale, spatial distribution, tectonic features and activity. The seismic risk assessment to determine the buried fault Basic data. (3) through research, it is found that comprehensive geophysical exploration is the most effective and concise way to find hidden faults, while drilling data is a direct validation of prediction results.

【学位授予单位】：中国地震局工程力学研究所
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P315.7;P631.4

【相似文献】