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中间层性质的判定与交点法求速度的误差
引用本文:周鸿秋. 中间层性质的判定与交点法求速度的误差[J]. 物探与化探, 1990, 14(1): 16-26
作者姓名:周鸿秋
作者单位:中国地质大学物探系 武汉
摘    要:本文以水平三局介质为模型,着重研究初至折射波法中经常遇到的隐伏层和速度侧转层的形成条件及其对反演解释精度的影响。文章列举的葛洲坝和深圳机场的应用研究实例,论证了利用测区的层速度和厚度进行理论计算,有助于定量判断用交点法求有效速度的可行性和反演解释成果的可靠性。

关 键 词:中间层 性质判定 交点法 速度误差 初至折射波法 工程地震勘探 隐伏层 速度倒转层

THE DETERMINATION OF PROPERTIES OF INTERMEDIATE LAYERS AND THE ERRORS IN CALCULATION OF VELOCITIES WITH INTERSECTION POINT METHOD
Affiliation:Department of Geophysical Prospecting, China University of Geological Sciences, Wuhan
Abstract:Using horizontal three-layer media as the model, this paper deals emphatically with the concealed layer and layer of inverted velocity encountered commonly in the study of first arrival refraction method: their formation condition and their influence on the precision of inversion interpretation. With the applications in Gezhou Dam and Shenzhen Airport as examples, this paper demonstrates that the utilization of the layer velocity and thickness in the survey area to the theoretical calculation helps to the quantitative judgment as to the feasibility of using intersection point method to evaluate effective velocity and the reliability of inversion interpretation of outcomes.
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