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Numerical simulation scattered imaging in deep mines 被引量:1
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作者 胡明顺 潘冬明 李娟娟 《Applied Geophysics》 SCIE CSCD 2010年第3期272-282,294,共12页
Conventional seismic exploration,mostly based on reflection theory,hardly has accurate imaging results for disaster geologic bodies which have small scale,steep dip,or complex structure.In this paper,we design two typ... Conventional seismic exploration,mostly based on reflection theory,hardly has accurate imaging results for disaster geologic bodies which have small scale,steep dip,or complex structure.In this paper,we design two typical geologic models for analyzing the characteristics of scattered waves in mines for forward modeling by finite difference and apply the equivalent offset migration(EOM)and EOM-based interference stack migration methods to mine prospecting.We focus on the analysis of scatted imaging’s technological superiority to reflection imaging.Research shows:1)scattered imaging can improve fold and make the best of weak scattered information,so it shows better results than post-stack migration imaging and 2)it can utilize the diffraction stack migration method-based ray path theory for mine seismic advanced prediction,so it provides an new efficient imaging method for improving resolution of mine seismic exploration. 展开更多
关键词 MINE seismic exploration scattered wave seismic imaging numerical simulation
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超高密度电法及其在水电站勘察中的应用
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作者 高战士 《中国新技术新产品》 2013年第11期32-32,共1页
介绍了超高密度电法的原理及其特点,采用FlashRES 64多通道超高密度直流电法勘探系统,利用井井透视、井地勘探的勘探方法对坝基进行勘察,查明坝基内岩溶的发育特征及规模。
关键词 超高密度电法 水电站 透视 井地勘探
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Geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin 被引量:1
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作者 ZENG Chun-lin JIANG Bo +2 位作者 ZHANG Min YIN Cheng-ming MA Li-xie 《Mining Science and Technology》 EI CAS 2009年第2期241-244,共4页
We investigated the geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin to better understand their cause.The structural situation,the hydrocarbon accumulation m... We investigated the geological factors associated with unsuccessful exploration wells in the northern margin of the Qaidam basin to better understand their cause.The structural situation,the hydrocarbon accumulation mechanism and unsuccessful well data collected from 1996 to 2005 were studied.The results show that the main geological factors associated with unsuccessful exploration wells are a lack of effective source rocks and a lack of effective traps,as well as the migration-accumulation conditions that exist in this area.The basin was reformed by Meso-Cenozoic tectonic evolution.Multi-stage tectonic activities have both positive and negative effects on hydrocarbon accumulation.Source rocks distribution,effective migration channels,effective traps and the tectonic evolution effects on hydrocarbons should be the key objects for further studies. 展开更多
关键词 northern margin of the Qaidam basin oil and gas exploration exploration wells unsuccessful reasons geologicalfactors TECTONICS
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3D HIGH RESOLUTION SEISMIC PROSPECTING IN MINING AREAS,XIEQIAO COLLIERY
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作者 崔若飞 《Journal of China University of Mining and Technology》 1996年第1期88-96,共9页
3D seismic prospecting in mining areas of Xieqiao Colliery is a successfulmodel for an advancement from the resource prospecting to mining prospecting stagein coal fields. Its results have proved that faults with a th... 3D seismic prospecting in mining areas of Xieqiao Colliery is a successfulmodel for an advancement from the resource prospecting to mining prospecting stagein coal fields. Its results have proved that faults with a throw of 5-10 m can be detected in an area with good seismogeologic conditions by using 3D seismic technique.Detection of underground tunnels for the first time utilizing 3D seismic data indicates that subsided columns, gotten and mine goaf can be detected using 3D seismic technique, so it has a broad applied prospect. 展开更多
关键词 3D seismic prospecting seismic data interpretation FAULT pattern recognition
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3D HIGH RESOLUTION SEISMIC PROSPECTING IN COAL MINING AREAS
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作者 崔若飞 《Journal of Coal Science & Engineering(China)》 1999年第2期29-32,共4页
The production capacity and efficiency for mechanized coal faces of large-scale mines depend on the detecting degree of mining structures. It is a major task for geological exploration in coal fields to detect minor s... The production capacity and efficiency for mechanized coal faces of large-scale mines depend on the detecting degree of mining structures. It is a major task for geological exploration in coal fields to detect minor structures in district. 3D high resolution seismic prospecting is a effective measure for solving this problem. 展开更多
关键词 3D seismic prospecting high resolution mining structure FAULT
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Migration of multiples from the South China Sea 被引量:7
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作者 LIU YiKe ZHU WeiLin +2 位作者 MI LiJun ZHOU JiaXiong HAO Hu 《Science China Earth Sciences》 SCIE EI CAS CSCD 2015年第3期482-490,共9页
The South China Sea where water depth is up to 5000 m is the most promising oil and gas exploration area in China in the future.The seismic data acquired in the South China Sea contain various types of multiples that ... The South China Sea where water depth is up to 5000 m is the most promising oil and gas exploration area in China in the future.The seismic data acquired in the South China Sea contain various types of multiples that need to be removed before imaging can be developed.However,compared with the conventional reflection migration,multiples carry more information of the underground structure that helps provide better subsurface imaging.This paper presents a method to modify the conventional reverse time migration so that multiple reflections can migrate to their correct locations in the subsurface.This approach replaces the numerical impulsive source with the recorded data including primaries and multiples on the surface,and replaces the recorded primary reflection data with multiples.In the reverse time migration process,multiples recorded on the surface are extrapolated backward in time to each depth level,while primaries and multiples recorded on the surface are extrapolated forward in time to the same depth levels.By matching the difference between the primary and multiple images using an objective function,this algorithm improves the primary resultant image.Synthetic tests on Sigsbee2 B show that the proposed method can obtain a greater range and better underground illumination.Images of deep water in the South China Sea are obtained using multiples and their matching with primaries.They demonstrate that multiples can make up for the reflection illumination and the migration of multiples is an important research direction in the future. 展开更多
关键词 the South China Sea reverse time migration of multiples seismic imaging
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