摘要
针对淮南煤田的地质情况、煤系地层的分布和岩性特征,研究了煤系地层地震物理模型的制作方法,并进行了测试,对地震物理模型进行数据采集与处理,得出地震物理模型的地震响应特征。利用地震数值模拟技术制作了淮南煤系地层地震数值模型,分析研究了不同充填物的孔洞地震响应变化的特征及变化规律。研究结果表明:煤田地震物理模型技术的关键是低速煤层和裂隙带的模拟制作;煤系地层地震物理模型作为指导煤田地震勘探,认识煤田地震波场特征有明显意义。地震探测可以检测孔洞,不同孔洞会引起地震波场绕射和反射特征的明显差异。由于目前国内外地震物理模实验主要还是应用于石油天然气的勘探开发上,而在煤田勘探领域尚不多见,因此本次研究成果具有一定意义。
Based on geological conditions of Huainan coalfield,including distribution of coal strata and lithologic features,production and testing of seismic geology model of coal measure strata in Huainan are completed.Seismic data acquisition and processing provide clearly the seismic reflection characteristics of the physical model.We designed seismic numerical simulation model of the coal measure strata in Huainan by seismic numerical simulation technology,and analyzed the variation features of seismic responses.The results show that the simulation production of low speed coal seam and fractured zone are key of the seismic physical modeling techniques,at the same time,seismic physical model guides coal seismic exploration,helps to understand characteristics of seismic wave field.Seismic detection can detect cavern,different caverns can cause significantly difference of diffracted wave and seisnic seismic reflection wave field.As the seismic physical modelling experiments at home and abroad are mainly used for oil and gas exploration and development,this technique in the coal fields is rarely used to solve practical problems,therefore,the results of this research is important.
出处
《中国矿业》
北大核心
2011年第8期115-118,共4页
China Mining Magazine
基金
国家重点基础研究发展计划(973)项目资助(2006CB202209)
国家自然科学基金仪器专项(50727401)
中央高校基本科研业务费专项基金资助(2010YD12)
煤炭资源与安全开采国家重点实验室开放课题(SKLCRSM10B05)
关键词
地震物理模型
地震数值模型
模型制作
数据采集
处理
孔洞
seismic physical modeling
seismic numerical model
model making
data acquisition
seismic processing
pore-hole
