Methods of coal petrology,coal geochemistry and sedimentology were used to determine macro-micro structural constituent,mineral characteristics and geochemical parameters of No.3 coal seam.And the coal-forming peat swamp environment character was analyzed.The results show that the No.3 coal seam includes four phases,that is,limnetic phase,wet forest swamp phase,weaker water cover forest swamp phase,and overlying-water forest swamp phase,in which the wet forest swamp is main phase.The original peat swamp sedimentary environment can be divided into scanty saline water latchstring swamp,scanty fresh water fluvial swamp,moderate saline water seashore swamp,moderate fresh and semi-saline water fluvial swamp,and rich fresh water fluvial swamp.The continental sedimentation character and three cycle rhythms are obvious in the vertical section of No.3 coal seam.The micro coal seam characteristiced confirmed the macro sedimentary which theory,which offered theoretical basis for designing and optimizing coal washing and use.
国家科技期刊平台
NSTL
万方数据
维普
