三维地震勘探技术在潞安矿区的应用
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摘要
潞安矿区属黄土丘陵地貌,浅层地震地质条件较好,但由于矿区内村庄、工业矿区等地面建筑较多,严重影响数据采集质量。目前潞安矿区三维地震勘探存在的主要问题为:小构造遗漏较多,特别是5m以下的断层和20m以下的陷落柱;陷落柱的解释误差较大,影响巷道及工作面布置;时深转换不准确,煤层底板等高线出入较大;第四系厚度不准。虽然受测区地震地质条件和技术限制存在多解性和误差,但就潞安矿区已开展的三维地震勘探来看,采区三维地震勘探是潞安矿区精细化地质勘查的必要手段,其在煤矿生产的合理设计、采区的合理划分及巷道、工作面的合理布置等方面发挥了重要作用。
The Luan mining area is situated at loess hill area;it has better shallow layer seismic-geologic conditions.But because of too many villages and industrial mining area surface constructions seriously impact data acquisition quality.Main problems of 3D seismic prospecting in the Luan mining area at present have: many non-disclosed minor structures,especially faults with throw <5m and subsided columns with diameter <20m;larger subsided column interpretation errors impact roadway and working face layout;incorrect time-to-depth conversion caused coal floor contour discrepancy;inaccurate Quaternary System thickness.Although ambiguities and errors are existed because of prospecting area seismic-geologic conditions and technical restricts,but with regard to already carried out prospecting in the mining area,winning district 3D seismic prospecting is still a necessary means in geologic exploration meticulousness,it plays a main role in coalmine reasonable design,winning district reasonable division and roadway,working face reasonable layout.
The Luan mining area is situated at loess hill area;it has better shallow layer seismic-geologic conditions.But because of too many villages and industrial mining area surface constructions seriously impact data acquisition quality.Main problems of 3D seismic prospecting in the Luan mining area at present have: many non-disclosed minor structures,especially faults with throw <5m and subsided columns with diameter <20m;larger subsided column interpretation errors impact roadway and working face layout;incorrect time-to-depth conversion caused coal floor contour discrepancy;inaccurate Quaternary System thickness.Although ambiguities and errors are existed because of prospecting area seismic-geologic conditions and technical restricts,but with regard to already carried out prospecting in the mining area,winning district 3D seismic prospecting is still a necessary means in geologic exploration meticulousness,it plays a main role in coalmine reasonable design,winning district reasonable division and roadway,working face reasonable layout.
引文
[1]中国煤炭地质总局.煤矿采区三维地震勘探经验交流会论文集[M].北京:中国矿大出版社,2001.
[2]张爱敏.采区高分辨率三维地震勘探[M].徐州:中国矿业大学出版社,1997.
[3]卫金善,张晋武.综合勘探方法在成庄矿井地质构造探测中的应用[J].中国煤田地质,2002,14(04).
[2]张爱敏.采区高分辨率三维地震勘探[M].徐州:中国矿业大学出版社,1997.
[3]卫金善,张晋武.综合勘探方法在成庄矿井地质构造探测中的应用[J].中国煤田地质,2002,14(04).
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