高分辨率反射波地震勘探在城市隐伏断裂探测中的应用——以成都天府新区苏码头断裂为例

采用“三小三高二绝招”的工作方法，通过静校正、多域多方法联合噪音衰减和精细的速度分析获得较高分辨率的地震时间剖面，揭示苏码头断裂的展布位置、构造形态及变形样式等。结果表明，区域构造以冲起式为主，在反冲断层与逆冲断层之间形成冲起构造或逆冲三角构造，在地震剖面上有明显的楔状特征。通过地震测线的断层走向以NE为主，倾向以SE为主，部分断层倾向为NW。

Application of High Resolution Reflected Seismic Exploration in the Detection of Urban Buried Faults: Sumatou Fault of Tianfu New District

We obtain clear high-resolution seismic time profiles, revealing the distribution location, structural morphology and deformation pattern of the Sumatou fault. We use the methods of ‘three small, three high,two tricks’ , combined with static correction, noise attenuation of multi-domain and multi-method, and fine velocity analysis. The exploration results show that the regional structures are mainly thrusting structures; that is, between the recoil faults and the thrusting faults, pop up structures or thrusting triangular structures are often formed, which have obvious wedge-shaped characteristics in seismic profiles. The fault strike is mainly NE, the fault tends to be SE, and some tend to be NW.