浅层地震勘探在城市活断层探测与危险性评价中的应用

活动断层是引起自然灾害的重要因素之一,如何减少活动断层带来的生命、财产损失成为人们努力的目标。阐述了浅层地震勘探在城市地震活断层探测与地震危险性评价项目中的应用,采用地震勘探的方法,从地震勘探测线的布置、施工参数的确定,到资料的综合处理和解释都进行严格的管理,最终获得了反射波信噪比高、断层显示清晰的时间剖面。通过对地震资料的综合分析和研究,可以确定勘查区重点断层隐伏段的位置、断层错断的层位与深度,为城市断层危险性评价和城市发展规划及重大工程选址提供科学依据。

The Application of Shallow Seismic Prospecting Methods to Urban Active Fault Detection and Risk Assessment

Active fault is one of the important factors that cause natural disasters. To reduce the death toll and property loss brought by active fault is the aim of all people. This paper explains the application of shallow seismic prospecting methods to the urban active fault de- tection and seismic risk assessment. By using methods of seismic exploration, from the strict management of the seismic survey line arrangement, the construction parameters de- termination, to the data processing and interpretation, eventually high signal noise ratio of reflected wave and the clear fault of time section are obtained. Through the comprehensive analysis and research of seismic data, concealed fault location of the exploration area, width and depth of fault broken section can be ensured, which can provide a scientific basis for the urban fault risk assessment, the urban development planning and major project site selec- tion.