Study on Sedimentary Environment of Coal Measures in Shanxi Shuozhou Jinhaiyang Mining Area

In order to analyze the seam distribution law with multi seams and thickness variation in Jinhaiyang Mining Area, there were 276 borehole loggings and C ore information of the mining area analyzed and the particle statistics and the element measurement were conducted.The results showed that there were three sedimen tary systems mainly including the developed barrier coast, shallow water delta, river and lakes in the mining area.There were seven sedimentary facies types of the barr ier islands, lagoon, tidal flat, marsh, delta, river and lakes. The facies belt was different in north and south and was expanded and distributed in east and west.During th e coal formation period, several transgressions were occurred.Due to the influences, No.9 and No. 11 seams were developed continuously and high peaks and narrow fr equency peaks were occurred many times in the seam loggings.There were over 4 partings generally occurred in the seams.Other seams were developed unstable and pinched out or lost.As for No.11 seam, the west part would be thick and the east part would be thin, the north part would be thick and the south part would be thin, and t he average thickness would be 3.69 m.As for No.9 seam, the west part would be thin and the east part would be thick, the east seam would be forked and the average t hickness of No.9 seam would be 6.78 m.In the Taiyuan Formation, V, Mn, U, P, Fe, S and other elements content of the coal would be higher than Shanxi Formation and would be similar to the sedimentary facies in expansion and distribution.