摘要
以宋新庄井田三维地震勘探为例,介绍了该区主要地震反射波组与标志层位的对应关系,并通过对T3、T10、T18波的研究查明了勘探区构造形态:除了对甜水堡背斜形态及位置更明确外,还新发现汪水塘向斜及9条新断层,其中DF5逆断层及西移的金家渠子西侧逆断层控制了该井田边界。通过对煤层隐伏露头的解释及钻孔验证,证实部分煤层露头向东南平移200～500m,扩大了煤层赋存范围。另外强反射波组TN、TE表现,确定了新生界古松散层内部地层的界限及底界与下伏地层的不整合关系,该区新生界底界面总的变化趋势为西部高、东部低。
To take the 3D seismic prospecting in the Songxinzhuang minefield as an example,introduced correspondence between main seismic reflection wave group and marker horizon,and through study work over T3,T10 and T18 waves has found out structural forms in the prospecting area.Other than form and location definitudes of the Tianshuipu anticline,also newly found the Wangshuitang syncline and 9 faults,in which,the DF5 reverse fault and westward moved Jinjiaquzi west reverse fault have controlled the boundary of the minefield.Based on interpretation of coal seam buried outcrop and drilling verification,demonstrated that part of coal seam outcrops have translated southeastward 200~500m,thus extended coal seam hosting scope.In addition,expressions of strong reflection wave groups TN and TE have confirmed Cenozoic loose bed internal demarcation lines and unconformable relation between its bottom and underlying strata.Overall variation trend of Cenozoic bottom boundary is high in west,low in east.
出处
《中国煤炭地质》
2011年第2期53-58,共6页
Coal Geology of China
关键词
三维地震勘探
地质层位
反射波
宋新庄井田
3D seismic prospecting
geologic horizon
reflection
Songxinzhuang minefield
