| 起伏地表检波器组合响应 |
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| 引用本文： | 王志强,韩立国,巩向博,凌 云.起伏地表检波器组合响应[J].吉林大学学报(地球科学版),2014,44(2):694-703. |
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| 作者姓名： | 王志强 韩立国 巩向博 凌 云 |
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| 作者单位： | 吉林大学地球探测科学与技术学院，长春130026 |
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| 基金项目： | 国家自然科学基金项目(41074075) |
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| 摘 要： | 在地形条件复杂、干扰波发育的地区，检波器组合接收可以大大提高资料的信噪比。这种组合就是用多个检波器同时接收地震波作为一个地震道的输入，它主要是利用有效波和干扰波传播方向的不同来压制干扰波。根据检波器组合响应的基本原理，将传统的水平面上检波器组合理论推广到起伏地表条件下，主要讨论了起伏地表检波器面积组合的响应情况，并对比了检波器组合滤波后有效波和干扰波的响应。通过分析可知，在地表倾斜的地区，随着倾斜程度的增大，沿上倾方向传来的干扰波压制程度增大，沿下倾方向传来干扰波压制程度减小。用反演方法对检波器组内距进行了优化，在已知检波器组合方向特性的情况下，得到与之匹配的组内距。数值计算表明，检波器组合滤波后的地震资料，有效波的响应明显高于干扰波的响应，信噪比得到很大提高。
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| 关 键 词： | 检波器组合 地震勘探 组合接收 |
| 收稿时间： | 2013-07-08 |
Geophone Array Response on Undulating Surface |
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| Wang Zhiqiang,Han Liguo,Gong Xiangbo,Ling Yun.Geophone Array Response on Undulating Surface[J].Journal of Jilin Unviersity:Earth Science Edition,2014,44(2):694-703. |
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| Authors: | Wang Zhiqiang Han Liguo Gong Xiangbo Ling Yun |
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| Institution: | College of GeoExploration Science and Technology, Jilin University, Changchun130026, China |
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| Abstract: | Geophone array receiving can greatly improve the signal to noise ratio of data in some complex terrain and interference wave development areas. This kind of array uses more than one geophone to receive seismic wave at the same time as the input of a seismic trace. It suppresses interference wave mainly using the difference of the propagation direction between the effective wave and interference wave. We promote combinatorial theory from the plane to the undulating surface based on the theory and method of geophone array. We discusses the response of geophone array in the undulating surface and compared the response of effective wave and interference wave after the geophone array filter. Through the analysis，the suppression degree of interference wave is increased gradually with the increase of tilt when interference wave spreads along the up dip direction in undulating surface area. And the suppression degree of interference wave is increased gradually when interference wave spreads along the down dip direction. At the end of the article, the geophone interval of geophone array was optimized with inversion method. In the case of that geophone array direction characteristics are known, we can get the geophone interval that is matched. More numerical calculations shows that the response of effective wave is significantly higher than that of interference wave in geophone array filtered seismic data. |
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| Keywords: | geophone array seismic prospecting combination receiving |
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