41 5 Vol. 41 No.5 2013 10 COAL GEOLOGY & EXPLORATION Oct. 2013 : 1001-1986(2013)05-0006-05 1 1 1, 2 3 1 1 (1. 100083 2. 030024 3. 400042) : (ICCP), P618.11 A DOI: 10.3969/j.issn.1001-1986.2013.05.002 Coal petrology and coal facies of Zhongliangshan mining area, Chongqing HOU Xianxu 1, TANG Yuegang 1, SONG Xiaoxia 1, 2, YANG Mingxian 3, GUO Mingtao 1, JIA Long 1 (1. School of Geosciences and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China; 2. College of Mining Technology, Taiyuan University of Technology, Taiyuan 030024, China; 3. Chongqing Institute of Geology and Mineral Resources, Chongqing 400042, China) Abstract: The main coal seams in Zhongliangshan mining area are analyzed by drawing macerals ternary diagrams and coal facies diagrams in consideration of the maceral classification of ICCP 1994 system. The seams are characterized by the predominance of semi clairain and a lot of structural coal, which is a result of Epigenetic tectonic activity. The petrographic composition is dominated by vitrinite, in which collodetrinite and vitrodetrinite are the major macerals. The sedimentary environments deduced from petrographic composition and coal facies diagrams vary from low delta plain to limnic environment, which belong to Rheotrophic, the mires were influenced by marine flooding. Key words: coal petrology; Zhongliangshan mining area; macerals; coal facies (P 3 l) 26.50~105.02 m 71.08 m 10 ( K1 K10) 5 1 2 2 15.52% [1-2] [3-5] 1 20 5 25 4 21 K6 ( ) GB/T 18023 2000 [6] GB/T 16773 2008 [7] GB/T 15588 2001 [8] (ICCP)1994 [9] 3 [10] ( ) : 2012-12-09 : (1212010633908); (Dyy5095012010016) : (1988 ),.
5 : 7 [11-12] ( ) [13-14] Diessel [12] TPI/GI [15-16] 2 2.1 (K3) 1 K1 50% K2 K3 K7 K2 K3 (20%~30%) K2 K10 1 Fig.1 Lithotypes of major coal seams 2.2 1 38.4%~84.8% 69.8% 6.7%~28.2% 14.3% 5.3%~47.5% 15.9% 50%( 2a) 50%( 2b) ph [9] ( 2c) 3 [9] a. 2 Fig. 2 Petrographic characteristics of coal samples b. c. ( 1 2d) K3-3
8 41 43.8% K10-3 18.8% 2.3 (GI) (TPI) (GWI) (VI) 4 4 [17-22] TPI-GI VI-GWI Diessel [12] Calder [11] 4 TPI GI TPI TPI ph ph TPI GI GI TPI GI 1 GI-TPI 3a GI-TPI (Terrestrial) (piedmont plain) (Dry forest swamp) (Upper delta plain) (Wet forest swamp) (Limnic) (Lower delta plain) [12 19] [23] GWI GWI VI VI [11] TPI GI 0.1~1.2 2.4~18.7 TPI GI GI-TPI ( 3a) GWI VI 1.0~118.8 0.1~1.2 K3-4 GWI 118.8 1 39.0% 35.9%( ) GWI (3.9%) 3b VI 3 a. b. 60% ( ) c. TPI VI TPI-GI VI-GWI
第 5 期侯贤旭等 : 重庆中梁山矿区主要煤层的煤岩学和煤相特征 9
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