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- W2350190261 abstract "Yanan Formation of middle Jurassic in Jijiajing mining area contains more than 20 coal seams.This study numbers 23 coal seams,among which 9 coal seams are mining coal seams or local mining coal seams.Yanan Formation can be divided into 5 sections from bottom to top,in which the second section has the most thickness of more than 7 m.The sedimentary environment of Yanan Formatin belongs to shallow water lake delta,which is characterized by changeable phases and unstable marker bed.These situations would multiply the difficulties in the coal seam correlation,then affect the overall development plan of Jijiajing mining area.According to the properties of cycle and sedimentary rhythm,interlayer spacing between coal seams,own characters of coal seams,coal petrographic characteristics,geophysical characteristics,and seismic physical properties characteristics,this study took a synthetical contrast of coal seams,with high reliability.Especially in longitudinal and horizontal tracing contrast of mining coal seams,these methods have ample foundation and reliable results." @default.
- W2350190261 created "2016-06-24" @default.
- W2350190261 creator A5076175716 @default.
- W2350190261 date "2012-01-01" @default.
- W2350190261 modified "2023-09-23" @default.
- W2350190261 title "Coal seam correlation methods of Yanan Formation in Jijiajing mining area" @default.
- W2350190261 hasPublicationYear "2012" @default.
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