丁集矿煤质变化特征

发布时间：2018-04-24 00:39

本文选题：丁集矿区 + 煤质特征　；参考：《安徽理工大学》2015年硕士论文

【摘要】：由于安徽省淮南市丁集煤矿煤质情况较为复杂,本文以丁集煤矿主采煤层为研究对象,采用了宏观、微观煤岩分析、工业分析,元素分析,线性回归法,Matlab软件及Surfer软件模拟,主要分析研究了丁集煤矿主要可采煤层的煤质特征及变化规律,探讨了煤变质作用的类型。 1、主采煤层煤质变化特征：本矿区煤类以气煤和1/3焦煤为主,与整个淮南煤田的主要煤类一致。各煤层均属中灰分煤,各煤层为特低～低硫、特低～低磷、中～中高热值,高熔～难熔灰分,结渣、结污指数低,富油煤。各煤层属中高～高挥发分,中等偏强粘结性,具良好的结焦性能。 2、主采煤层煤质变化规律：灰分分布规律,在横向上看,主采煤层由复向斜的边缘向核部呈现递减的趋势,纵向上,随着煤层深度的增加,其灰分进一步降低,煤质增高；挥发分分布规律,从垂向上来看,挥发分随着深度增加,其进一步降低,并在岩浆岩侵入地区,挥发分发生急剧性的变化,煤质变高或成天然焦；粘结性分布规律：粘结性总体分布规律不甚明显,趋于比较稳定的态势,但其可作为判定其他煤质的重要参考因素之一。 3、主采煤层煤变质作用类型：丁集煤矿主要由于深成变质作用,在中生代岩浆侵入的局部地段又发生接触变质作用,在矿区的东翼附近由于岩浆岩侵入致使煤层变质程度较高,主要是由于在原深成变质作用的基础上叠加了浅成岩浆热变质作用。综合分析,丁集矿区主采煤层浅部主要以QM为主,深层主要以1/3JM为主,煤质整体上较稳定,煤质优良,具有良好的经济开发意义。
[Abstract]:Because the coal quality of Dingji Coal Mine in Huainan City of Anhui Province is relatively complex, this paper takes the main coal seam of Dingji Coal Mine as the research object, adopts macroscopic and microscopic coal and rock analysis, industrial analysis, element analysis, linear regression method and Matlab software and Surfer software simulation. This paper mainly analyzes and studies the coal quality characteristics and variation law of the main mineable coal seam in Dingji Coal Mine, and probes into the types of coal metamorphism. 1. The coal quality change characteristics of main coal seam: gas coal and 1 / 3 coking coal are the main coal types in this mining area, which are consistent with the main coal types in Huainan coalfield. Each coal seam belongs to medium ash coal, and each coal seam is very low to low sulfur, very low to low phosphorus, medium to high calorific value, high melting to refractory ash, slagging, low fouling index, rich in oil coal. Each coal seam belongs to medium high-high volatilization, medium strong adhesion and good coking performance. 2, the coal quality change law of main coal seam: From the horizontal point of view, the ash distribution of the main coal seam decreases from the edge of the coal seam to the core, and in the longitudinal direction, the ash content decreases further and the coal quality increases with the increase of the coal seam depth. From the vertical point of view, the volatile matter decreases further with the increase of depth, and in the magmatic intrusive area, the volatile matter changes sharply, the coal quality becomes higher or becomes natural coke. The law of bond distribution: the general distribution law of bond property is not obvious and tends to be more stable, but it can be used as one of the important reference factors in judging other coal quality. 3, main coal seam metamorphism type: Dingji coal mine is mainly caused by deep metamorphism, and contact metamorphism occurs in the local area of Mesozoic magma intrusion, and near the east wing of mining area, the coal seam metamorphism degree is higher because of magmatic intrusion. This is mainly due to the superposition of epidiagenetic magma thermal metamorphism on the basis of proto-deep metamorphism. Comprehensive analysis shows that the main coal seam in Dingji mining area is mainly QM in shallow and 1/3JM in deep layer. The coal quality is stable as a whole and the coal quality is good. It has good economic development significance.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.11

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