深圳市活断层探测与地震危险性评价

在前人的研究成果基础上,通过对深圳市目标断层地表出露段开展野外地震地质调查,对隐伏段进行浅层地震反射探测、跨断层钻孔探测、槽探、电磁波CT探测,查明了目标断层的空间位置,确定了其第四纪活动性,作出了目标区主要断层分布图。此外,通过区域构造背景分析确定了目标断层地震强度的总体水平,给出最大震级上限,运用入倉—三宅经验关系...

Active Fault Exploration and Seismic Hazard Assessment in Shenzhen City

Based on the Previous research results,through the field seismic geology survey on the surface outcrop section of the target faults,and shallow seismic reflection exploration、drilling exploration crossing faults、trenching,and electromagnetic wave CT exploration of concealed faults,the spatial position and the Quaternary activity of target faults in Shenzhen City are identified,the distribution map of main faults in target zone is drafted.In addition,based on the regional tectonic background,the target faults＇ overall level of earthquake intensity is analyzed,and upper limit magnitude of the faults is educed,Then,the maximum magnitude of earthquakes in Shenzhen is evaluated with the Warehousing-Miyake empirical relationship and the tectonics analogy method.Finally,the seismic hazard of the target faults in Shenzhen is assessed comprehensively according to the methods above-mentioned.the risk evaluation map of target faults is drafted in this paper.