浅层地震反射波法在追索地下人防工程中的应用

Application of shallow seismic reflection wave method to the tracing of underground civil air defence workings

对于许多规模小、深度浅的地下人防工程．用地震反射波法查明它们在地下的分布和大小。在江西临川市某区，我们采用浅层地震反射波法，根据当地的场地条件、物性差异和干扰情况等，合理布置测线，选择恰当的激发和接收方式，进行适当的资料处理，得到了清晰的地震时间剖面。根据时间剖面上反映出来的反射空白区，较好地推断出了该区地下人防工程的分布位置和防空洞的深度、宽度等。为该区一高层建筑的基础设计提供了依据。

The distribution and dimension of many small-scale and shallow underground civil air defence workings can be made clear by means of seismic refIection wave method. This was sucessfully applied in a dlstrict of Linchuan City, Jiangxi Province. Based on the local conditions, difference in physical properties and situations of disturbance,with the rational arrangement of measuring lines. appropriate selection of exciting and receiving ways and proper data processing. clear seismic time sections were obtained And based on the reflection blank areas shown by the sections,the location, distribution, depth and width of underground civil air defence workings of the given district were fairly correctly inferred, and thus a basis for the design of foundation of a high building in this district was provided.