桩位下浅层基岩内洞穴的高频震波勘探研究  

High-frequency seismic prospecting used to find caves in the rock-mass below stakes

作　　者：许昭永 段永康 许峻 胡毅力[3] 王彬 赵晋明 华培忠 杨润海 胡家富[3] 温一波[3] 

机构地区：[1]云南省防灾研究所,昆明650041 [2]昆明南方岩土工程技术开发公司,昆明650091 [3]云南大学地球科学系,昆明650091

出　　处：《地球物理学进展》2003年第3期384-390,共7页Progress in Geophysics

基　　金：云南省"十五"重点科技项目资助.

摘　　要：　叙述桩底下浅层基岩内的洞穴勘探方法.采用高频地震勘探仪系统,或在桩底原位激发、接受振波,或几个桩底联测,互为激发、接受,或将两者合并进行.通过对震波的震相、周期和振幅等特征的分析确定桩底下浅层基岩内是否存在洞穴.震波周期大,反射波到时早,则在浅层基岩内存在洞穴;而周期小,且无反射波者,则在浅层基岩内没有洞穴.This paper discusses a method of seismic prospecting used to find caves in the rockmass behind stakes. In this method, highfrequency seismic prospecting system is employed and the array of sources or receivers can vary with different patterns. Whether there is a cave in rockmass behind stakes can be settled down by the analysis of wave phase, period and amplitude. Seismic waves with long period and short propagation time always mean the appearance of caves.

关 键 词：地震波探查 洞穴 桩位 浅层基岩 

分 类 号：P631[天文地球—地质矿产勘探] TV223[天文地球—地质学]