用地震数据估算填方残留层物性参数的数值试验  

Numerical experiment of determination of medium parameters for reclamation engineering layers by seismic data

作　　者：韩超[1] 付小波[1] 原健龙 钱广[1] 余嘉顺[1] 

机构地区：[1]成都理工大学地球物理学院,成都610059

出　　处：《桂林理工大学学报》2016年第4期670-680,共11页Journal of Guilin University of Technology

基　　金：四川省科技支撑计划项目(2013SZ0173;2009SZ0026)

摘　　要：为确定某海滩工程填方场址下伏残留层介质的厚度、密度、地震横波速度以及品质因子等物性参数,提出以地震观测数据为约束,通过模拟场址地震响应来估算残留层介质参数的方法。介绍了该方法的原理以及算法过程,给出了数值试验示例。结果表明,除了填方残留层介质的品质因子对地震数据影响显著性较低而较难精确确定之外,用该方法确定的残留层层厚、密度、横波速度等介质参数与验证模型吻合程度很高,说明了该方法具可行性。To determine the depth,density,seismic velocity and quality factor values of a buried soft layer resulting from reclamation at an engineering site,an approach was developed by simulating the seismic ground motion at the engineering site,with the constraint of observation seismic data.The theory and the algorithm for the approach were given.A numerical experiment could demonstrate the application of the method.In the experiment only the quality factor is difficult to determine precisely,other parameters,such as the layer depth,density,shear wave velocity and quality factor values estimated for the buried,were in good agreement with the target model.

关 键 词：填方工程 地层物性参数 模拟估算 地震动响应 

分 类 号：P315.8[天文地球—地震学]