| 浅层地震过障碍变观设计软件的研制及应用 |
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| 引用本文： | 何银娟.浅层地震过障碍变观设计软件的研制及应用[J].西北地震学报,2016,38(3):478-484. |
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| 作者姓名： | 何银娟 |
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| 作者单位： | 中国地震局地球物理勘探中心, 河南 郑州 450002 |
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| 基金项目： | 中国地震活动断层探察-华北构造区项目(200908001);中国地震局地球物理勘探中心青年基金项目(YFGEC2014001) |
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| 摘 要： | 为提高过障碍变观设计的效率,利用C++编程语言开发出一个浅层地震过障碍变观设计软件,以提高过障碍变观的方便性和效率。当勘探中遇到地表障碍时可以利用此软件灵活变观,使地震测线跨越障碍物(江河、高速公路等),以保证反射同相轴能连续追踪对比。经实际应用,该软件效果较好,能够辅助数据采集人员在采集现场快捷地进行地震勘探过障碍变观设计,从而保证地震资料的质量。
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| 关 键 词： | 浅层地震勘探 数据采集 观测系统 障碍物 |
| 收稿时间： | 2015/9/16 0:00:00 |
Development and Application of a Shallow SeismicObstacle-crossing Geometry-variable Design Software |
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| HE Yin-juan.Development and Application of a Shallow SeismicObstacle-crossing Geometry-variable Design Software[J].Northwestern Seismological Journal,2016,38(3):478-484. |
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| Authors: | HE Yin-juan |
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| Institution: | Geophysical Exploration Center, CEA, Zhengzhou 450002, Henan, China |
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| Abstract: | In shallow seismic field data acquisition,the seismic line frequently encounters obstacles such as rivers,bridges,or towns.Sources or geophones cannot be placed at such places,which can cause the loss of seismic sources or seismic traces.When encountering obstacles,the geometry must be appropriately modified in order to obtain a continuous tracing contrast of reflection events from underground interfaces.Existing seismic geometry design software is not sufficient for shallow seismic exploration,therefore,in most work areas,geometry-variable design must be hand drawn.In response to this situation,we developed a shallow seismic obstacle-crossing geometry-variable design software using C++ programming language.This software is developed specifically for shallow seismic exploration and is practical and easy to use.The software contains the basic function for drawing a geometry graph,as well as a function for designing obstacle-crossing variable geometry.When the seismic line encounters obstacles,field workers can use this software to design obstacle-crossing geometry to ensure that the seismic line acquires good quality data while going over the obstacle.We used this software to execute an obstacle-crossing geometry-variable design in a practical seismic exploration,subsequently,we contrasted and analyzed the seismic stacked section before and after using the geometry-variable design.Before using the geometry-variable design,the loss of seismic sources and seismic traces resulted in a decrease in the fold number,a decrease in the signal-to-noise ratio of the final stacked section,loss of data,and poor continuity of the reflection events.After using the geometry-variable design software developed by author,the signal-to-noise ratio of the final stacked section was improved,and the continuity of the reflection events were significantly better.This application example indicates that the obstacle-crossing geometry designed by this software can effectively improve the quality of seismic data.Based on our results,we conclude that this software is helpful for field data acquisition. |
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| Keywords: | shallow seismic exploration data acquisition observation system obstacle |
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