安徽省濉溪县刘小庙矿区地质作用对煤层的影响  

The influence of geological function on coal bedin Liuxiaomiao mining area,Suixi County of Anhui

作　　者：陈珊珊 CHEN Shanshan(Geological Team No.325,Bureau of Geology and Mineral Exploration of Anhui Province,Huaibei 235000,Anhui,China)

机构地区：[1]安徽省地质矿产勘查局325地质队,安徽淮北235000

出　　处：《矿产与地质》2020年第1期26-32,共7页Mineral Resources and Geology

摘　　要：通过对刘小庙煤矿的地层、构造、岩浆岩活动、煤变质作用及岩相古地理的综合研究,发现该区其地质作用对煤层的纵向发育及横向发育均有影响。研究表明:断层对煤层的变化程度、可采程度及厚度均具有一定的控制作用,断层致使煤层的连续性和完整性破坏,造成煤层变薄甚至形成无煤区;煤层块段的厚度距断层的距离呈反比;岩浆岩的高温使煤质发生焦化作用,造成煤层的变薄和局部缺失,使煤层的厚度减薄;岩浆岩的穿插使煤层的结构复杂,降低煤层的稳定性;煤变质作用使煤质发生变化,煤变质作用的程度与矿区收益率形成正比;岩相古地理的沉积环境及作用对煤层的演化发展起到了至关重要的作用。该研究为日后含煤区的找矿预测提供一定的指导意义。This paper has synthetically studied on the strata,structure,magmatic activity,coal metamorphism and lithoface paleogeography of Liuxiaomiao coal deposit,and it has also analyzed the influence of geological characteristics on the coal beds.The study shows that it has a certain controlling effect on both vertical and horizontal development,the degree of change,mining and thickness of coal seam.The faults have destroyed the continuity and integrity of coal seams and let them become thinner even form none-coal area.The thickness of coal seam segment is inversely related with the distance of coal seam to the fault.The high temperature of the magmatic rock causes the coal quality to be coked,and also causes the phenomenon of the thinning and partial loss of the coal seam,and the reduction of the thickness of coal seam.The interpenetration of magmatic rock causes the structure of coal bed to be complicated,the stability of coal bed to be reduced.The coal quality is changed due to the coal metamorphism.The degree of coal metamorphism is in direct proportion to the yield ratio of the mining area.The sedimentary environment of lithoface paleogeography plays a very important role in the evolution and development of coal beds.The study has a guiding significance for the prospecting and prediction of coal-bearing area in the future.

关 键 词：刘小庙煤矿 地质作用 煤变质作用 岩相古地理 安徽 

分 类 号：P618.11[天文地球—矿床学]