绕射波技术在地裂缝勘查中的应用初探  

Application of diffraction wave technique in surveying ground fissures

作　　者：任妹娟[1,2] 任政委[1] 彭成[1] 孙党生[1] 

机构地区：[1]中国地质调查局水文地质环境地质调查中心,河北保定071051 [2]中国地质大学(北京),北京100083

出　　处：《工程勘察》2014年第1期91-94,共4页Geotechnical Investigation & Surveying

摘　　要：地裂缝严重制约了工农业生产、工程建设、城市规划和土地利用等发展国民经济的各项工作,是现今工程地震勘探的对象之一。文章首先介绍了隐伏地裂缝的特征、绕射波曲线特征和正演模拟理论,从理论上得出利用绕射波识别隐伏地裂缝的可行性;其次结合实例,从示范区地震时间剖面上识别出绕射波顶点,确定了隐伏地裂缝的位置和深度;最后得出结论,绕射波技术可作为隐伏地裂缝勘查的辅助手段。The ground fissures have seriously restricted the development of the national economy including agricultural and industrial production, project construction, city pianning and land use, which become one of the objects of engineering seismic exploration. The characteristics of hidden ground fissures, the diffraction wave curves and the forward modelling are introduced. Combined with the engineering examples, the peak of the diffracted wave from the seismic time section is identified, and the position and depth of hidden ground fissures are determined. The results show that the diffraction wave technique can be used as an auxiliary means to identify hidden ground fissures.

关 键 词：地裂缝 绕射波 地震勘探 隐伏 

分 类 号：P631[天文地球—地质矿产勘探]