浅层双分量地震在黄土公路地质缺陷探测中的应用研究  

Application of shallow multicomponent seismics to geological defects detecting in loess highway

作　　者：李庆春[1] 刘金兰[1] 丁梁波[1] 

机构地区：[1]长安大学地质工程与测绘工程学院,西安710054

出　　处：《地球物理学进展》2006年第4期1266-1271,共6页Progress in Geophysics

基　　金：西部交通建设科技攻关项目(200131881213);交通部行业联合攻关项目(2003353361520)资助

摘　　要：针对我国西部黄土公路下伏大量地质缺陷(灾害)及其对公路交通建设和运营的危害性,将多分量地震勘探技术引入浅层黄土公路工程勘探中.根据黄土公路地质缺陷独特的复杂性,重点对黄土地区浅层双分量地震勘探技术的数值模拟与观测系统优化设计、高品质地震资料采集试验做了深入研究,并在已知暗穴和危及公路的地裂缝发育区开展了双分量地震探测.实际探测结果表明:多分量地震勘探技术能分辨出规模大于1 m,埋深小于30 m的黄土公路地质缺陷.Aiming at the geological defects in western loess highway region and its harmfulness for construction and management, we introduced multicomponent seismics method in shallow loess highway engineering exploration. According to the complexity of geological hazards in loess highway region, we studied the numerical simulation, optimized geometry and high quality data acquisition of shallow hi-component seismic exploration; tested the bi-component seismic method in the area where there are some forgone cavities and geofractures. The results indicated that the bicomponent seismic method could resolve geological defects extended about lm within the 30m depth in loess highway region.

关 键 词：黄土公路 地质缺陷 多分量地震 探测 

分 类 号：P631[天文地球—地质矿产勘探]