【摘要】 深部煤层开拓生产过程中勘探地质资料相对较少,为准确获得煤层赋存资料,可利用井下巷道顶、底板岩层条件有效对近巷道煤层进行反射地震勘探。以淮南潘二煤矿某工作面煤层构造探测地震为例,通过地质条件分析,在煤层顶、底板的高抽巷道和底抽巷道分别设计二条测线,其中底抽巷道测线沿巷道顶板和两帮布置,高抽巷道地震测线沿巷道底板和两帮布置。由试验确定数据采集中的偏移距10m,道间距2m,炮间距2m。解释高、底抽巷的浅层地震剖面,发现异常断点7个。井下掘进揭露资料表明,对于断层及异常解释的准确率为80%。该勘探实例表明,当高、底抽巷与上下顺槽巷道相距20~60m时,获得的构造解释对生产指导意义重大。更多还原

【Abstract】 There are relatively less geological exploration data available during the development and production processes,making use of underground roof and floor conditions to carry out reflection seismic prospecting for near roadway coal seams can get coal seam oc curence data correctly.Taking the coal seam structure seismic prospecting in a working face in the Panji No.2 coalmine,Huainan as an example,after geological condtion analysis,two lines for roof and floor drainage ways each have been designed,in which,floor drainage way line layout along roof and two walls,while roof drainage way along floor and two walls.Test determined data acquisition offset is 10m,group interval 2m,shotpoint interval 2m.Through shallow seismic sections to interprete roof and floor drainage ways have found 7 abnormal breakpoints.Contrast with revealed data has shown,the accuracy of 80% achived in interpretation of faults and anomalies.The prospecting example has demonstrated that the distance between roof,floor drainage ways and upper and lower crossheadings is 20-60m,the interpreattion for structure is signality to guide the production.更多还原