葛泉矿东井放顶煤开采工艺研究与应用

发布时间：2018-06-15 05:22

本文选题：放顶煤 + 放顶煤参数　；参考：《河北工程大学》2015年硕士论文

【摘要】：本论文是以葛泉矿东井11910工作面为背景进行的研究。该工作面主要采8#和9#煤层，煤层的平均厚度为5.2m，煤层结构复杂，煤层倾角为3-11°。采用综采放顶煤开采，如何提高煤炭资源的采出率一直是集团公司及矿领导所重点关注的。本文通过对影响放顶煤采出率的各种参数，，在实验室模拟实验，对比不同的采放比、放煤步距、放煤方式的情况下，煤岩界面的移动规律和煤炭采出率，分析总结出比较合理的采放比、放煤步距、放煤方式以及综放工作面三机配套，实现工作面煤炭采出率的大幅提高，做到高产高效。针对11910工作面的特殊地质情况本课题共研究三种横向对比试验方案：在放煤步距与放煤方式相同条件下，设计3种不同的采放比，即1；1、1；1.5、1:2，分析不同采放比可以获得的采出率。在采放比、放煤方式相同的条件下，设计3种不同的放煤步距，即一刀一放、两刀一放、三刀一放，分析不同放煤步距可以获得的采出率。 3）在采放比、放煤步距相同的条件下，设计两种不同的放煤方式，即顺序放煤、间隔放煤，分析不同放煤方式可以获得的采出率。结合工作面实际情况对上述三种横向对比实验方案进行分析总结，最终得出比较合理的采放比、放煤步距、放煤方式。结合现场工业性实践检查实验效果。
[Abstract]:This paper is based on the background of 11910 face of East well in Gequan Coal Mine. The average thickness of coal seam is 5.2 m, the structure of coal seam is complex, and the inclination angle of coal seam is 3-11 掳. How to improve the recovery rate of coal resources by fully mechanized top coal caving mining is always the focus of the group company and the mining leaders. In this paper, through various parameters that affect the mining rate of top coal caving, in laboratory simulation experiments, the moving law of coal and rock interface and the coal recovery rate are compared under different mining drawing ratio, coal drawing step distance and coal drawing mode. This paper analyzes and summarizes the reasonable mining and caving ratio, the coal drawing step distance, the coal caving method and the three complete sets of fully mechanized caving face, so as to achieve a large increase in the coal mining rate of the working face and achieve high yield and high efficiency. According to the special geological conditions of 11910 working face, three kinds of transverse contrast test schemes are studied: under the same conditions of coal drawing step distance and coal caving mode, three different mining and drawing ratios are designed, I. e. 1.5U 1: 2, to analyze the recovery rate obtained by different ratio of extraction and discharge. Under the condition of the same mining drawing ratio and coal drawing mode, three different coal drawing steps are designed, that is, one cut and one release, two knives and one release, three knives and one release. The extraction rate obtained by different coal drawing steps is analyzed. 3) the ratio of coal drawing in mining is analyzed. Under the condition of the same coal drawing distance, two different coal drawing methods are designed, that is, sequential coal drawing and interval coal drawing, and the extraction rate obtained by different coal drawing methods is analyzed. According to the actual situation of the working face, the above three kinds of transverse contrast experiment schemes are analyzed and summarized, and the reasonable mining drawing ratio, coal drawing step distance and coal drawing mode are obtained. Combined with industrial practice on the spot to check the experimental results.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD823.49

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