文献类型：期刊文献

中文题名：贵州六盘水地区煤系地层地质特征的统计研究

英文题名：Statistical study on geological features of coal-bearing strata in Liupanshui,Guizhou

作者：杜学领

第一作者：杜学领

机构：[1]贵州理工学院矿业工程学院,贵州贵阳550003

第一机构：贵州理工学院矿业工程学院

年份：2020

卷号：43

期号：9

起止页码：33-42

中文期刊名：煤炭与化工

外文期刊名：Coal and Chemical Industry

基金：贵州理工学院高层次人才科研启动经费(0203001018029);国家安监总局2018年安全生产重大事故防治关键技术科技项目(guizhou-0005-2018AQ)。

语种：中文

中文关键词：煤系地层;高瓦斯;煤与瓦斯突出;近距离煤层;六盘水

外文关键词：coal-bearing strata;abundant gas;coal and gas outburst;close-range coal seam;western Guizhou;Liupanshui

摘要：为获得贵州西部六盘水地区煤系地层的特征,采用文献调研和统计的方法,对六盘水地区15座高产矿井的地质条件进行统计分析,统计评价指标包括聚煤地层、地质构造、煤层厚度、煤层层间距、顶底板条件、瓦斯特征、煤与瓦斯突出危险性等。研究表明,六盘水地区煤系地层以二叠系上统龙潭组为主,向斜构造是该地区的富煤地质构造;可采煤层以薄及中厚煤层、缓倾斜或倾斜煤层为主;大部分煤层层间距低于30 m,为近距离煤层赋存;煤的平均视密度为1.467 g/cm3,平均孔隙度为4.306%,煤质表现为特低全水分、低—中挥发分、灰分相对较高特点,但挥发分、灰分离散性较大;六盘水地区煤矿普遍为高瓦斯、突出矿井,瓦斯含量随煤层埋深、煤厚的增加有增大的趋势,但亦具有离散性,同一煤层的瓦斯压力与瓦斯含量具有相关性,掘进工作面的瓦斯问题应引起重视。
In order to obtain the characteristics of coal-bearing strata in the Liupanshui area of western Guizhou,a statistical analysis of the geological conditions of 15 high-yield mines in Liupanshui area was carried out using literature survey and statistical methods,and the statistical evaluation indicators include coal-bearing strata,geological structures,coal seam thickness,layer spacing,roof and floor conditions,gas characteristics,and the danger of coal and gas outburst.Research shows that the coal strata in the Liupanshui area are dominated by the Upper Permian Longtan Formation,and the synclinal structure is the coal-rich geological structure in the area.The recoverable coal seams are mainly thin and medium-thick coal seams,and gently inclined or inclined seams.The distance between most coal seams is less than 30 m,which is a close-range coal seam.The average apparent density of coal is 1.467g/cm3,and the average porosity is 4.306%.The coal quality is characterized by extremely low total moisture,low to medium volatiles,and relatively high ash,but the volatiles and ash separation are relatively dispersed.The coal mines in Liupanshui area are generally high gas and outburst mines;the gas content tends to increase with the depth of the coal seam and the thickness of the coal strata,but they are also discrete;the gas pressure of the same coal seam is related to the gas volume.In addition,the gas in the driving workface should be taken seriously.