基于GIS技术的煤层赋存规律研究

发布时间：2018-03-22 18:56

本文选题：聚煤特征　切入点：赋存规律　出处：《西安科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：根据平顶山煤矿的现场勘查以及详细的钻孔资料，对平顶山煤矿含煤岩系的矿物成分、岩石结构和其它成因标志以及对煤层沉积的古地理环境进行综合分析，然后对煤层沉积环境和聚煤特征、沉积体系等进行概述，在研究煤层赋存规律，分析煤层厚度的影响因素，以及对煤层厚度的变异系数进行综合评价的基础上，利用地质学原理与先进的GIS技术对煤层赋存状态、赋存环境及开采条件进行评价。研究表明平顶山煤矿的主采煤层是戊8和丁6两个煤层，区内戊8(四3)煤层在统计的100个钻孔中，含夹矸孔27孔，占27％，其中，含有1层夹矸的20孔，2层夹矸的7孔，夹矸厚0.05～0.82m，一般在0.30m以下，夹矸岩性主要为炭质泥岩或泥岩。垂向上，夹矸层位主要位于煤层中下部或中上部；横向上井田东部相对简单，，西部相对复杂，综合评价为结构较简单煤层，横向上东部煤厚相对稳定，西部变化相对较大，1m左右的煤厚点主要位于井田西部。丁6（五12）煤层分布于井田深部的东部，煤厚1.3～3.98m，平均2.20m，由东至西及向深部变厚，煤厚变异系数37.47％，可采性指数1.0，分叉区内属较稳定全部可采煤层，煤层结构简单，局部含夹矸1层，厚0.05～0.40m。通过先进的GIS技术对该煤田范围内的煤层赋存条件进行综合评价，进一步揭示出该煤矿区的煤层赋存规律、赋存状态以及赋存条件比较复杂的事实，给煤层开采带来较大的影响。
[Abstract]:Based on the field exploration and detailed drilling data of Pingdingshan Coal Mine, the mineral composition, rock structure and other genetic markers of coal bearing rock series in Pingdingshan Coal Mine and the paleogeographic environment of coal bed deposition are comprehensively analyzed. Then the sedimentary environment, coal accumulation characteristics, sedimentary system and so on are summarized. Based on the study of coal seam occurrence law, the influence factors of coal seam thickness and the coefficient of variation of coal seam thickness, the comprehensive evaluation of coal seam thickness is carried out. The occurrence state, environment and mining conditions of coal seam are evaluated by using geological principles and advanced GIS technology. The results show that the main coal seam of Pingdingshan coal mine is two coal seams, Wu8 and Ding6, and the main coal seams in Pingdingshan coal mine are Wu8 and Ding6 coal seams. In the Wu8 (4.3) coal seam, among the 100 boreholes counted, 27 holes contain gangue holes, accounting for 27 holes. Among them, 20 holes containing one layer of gangue and 7 holes with two layers of gangue, generally below 0.30m, are generally below 0.30m. The rock properties of gangue are mainly carbonaceous mudstone or mudstone. The gangue bed is mainly located in the middle or upper part of the coal seam, the eastern part of the transverse upper mine field is relatively simple, the western part is relatively complex, and the comprehensive evaluation is that the coal seam with simple structure is relatively stable, and the coal thickness of the eastern part is relatively stable in the transverse direction. The coal thickness of the coal seam Ding6 (W12) is distributed in the east of the deep part of the mine field, and the coal thickness is 1.33.98 m (average 2.20 m), which is thickened from east to west and to the deep. The coefficient of variation of coal thickness is 37.47, the index of mining is 1.0, the bifurcation area is relatively stable, all the coal seams can be mined, the structure of coal seam is simple, the coal bed contains 1 layer of gangue, and the thickness is 0.05 ~ 0.40 m. Through advanced GIS technology, the occurrence conditions of coal seam in this coal field are comprehensively evaluated. It also reveals the fact that the coal seam occurrence law, occurrence state and occurrence condition are more complicated in this coal mine area, which has great influence on coal seam mining.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P618.11;P208

【参考文献】