摘要
用地震方法探测城市直下型活动断裂是一种不可替代的勘探技术,对于不同的探测深度需采用不同的排列长度。试验研究结果表明,小道间距接收不但有助于准确确定断裂的空间位置,而且也有助于确定基岩断裂上断点的埋深,即采用小道间距接收,有利于综合提高地震记录的纵横向分辨率。结合北京夏垫活断裂的浅层反射地震探测结果,讨论了采用浅层反射地震技术探测城市活断层应注意的一些问题。
The seismic method is an important exploration method for detecting active faults buried directly beneath major cities. Different array lengths must be adopted for different detecting depths. Test results show that small group interval receiving can help to determine accurately the space position of faults, determine the buried depth of the upper terminal points of active faults, and contribute to improving comprehensively vertical and horizontal resolution of seismic records. This paper discusses some problems concerning the detection of city active faults by using shallow seismic reflection on the basis of the results of shallow seismic reflection processing for Xiadian active fault in Beijing.
出处
《物探与化探》
CAS
CSCD
2007年第B10期4-8,共5页
Geophysical and Geochemical Exploration
基金
地质大调查项目资助(1212010511108)
关键词
夏垫断裂
反射地震
高分辨率
浅部活动性
Xiadian fauh
seismic reflection
high resolution
activity at the shallow part
