煤岩类型

煤岩类型为光亮、半亮煤；

Lithotype is belonged to bright coal and semibright coal ;

结果表明：不同煤岩类型条带中，裂隙密度具有较大的差异，镜亮煤条带是裂隙分布的主要部位；

The results show that the difference of fracture densities in different lithotype bands is large .

提出了镜质组含量高的煤岩类型有较好的煤层气储集物性条件。

It is suggested that coal lithological types with high content vitrinites have better physical behavior conditions for coal seam gas accumulation .

文中通过对煤相、煤岩类型、煤岩成分的分析，论述了煤中内生裂隙的影响因素。

According to the analysis to the coaly facies , the coal lithotypes , the coal rock composition , the text discusses the influence factor of coal endogenic crack .

结果表明，裂隙在不同显微煤岩类型煤体中的分布存在较大的差异，同时裂隙分布的位置与显微煤岩类型的组合序列有关。

The result shows that the cleat density in coal bed varies in different microlithotype , and the occurrence of cleat is relevant to the grouping sequence of microlithotypes .

4＃煤显微煤岩类型主要是微镜煤，5＃煤主要是微镜惰煤。

The major microlithotype of No 4 coal seam is vitrite and that of No 5 is vitrinertite .

因此，我们从构造变形类型和特点来划分煤岩显徽构造类型，既简便又利于应用。

In this paper the types of microstructures of coal are distinguished according to the types and features of tectonic deformations , which is convenient and easily employed by geologists .

煤体结构、煤岩类型和煤质好，煤层割理较发育，渗透性较好，适合于压裂改造；

Coal body structure , coal petrologic type and coal quality are good ; the cleats in coal are developed with fair permeability , which is suitable for fracturing ;

煤岩成分和煤岩类型，尤其是显微煤岩类型和显微煤岩成分的含量与分布最能反映沼泽的环境条件，它们隐含了泥炭沼泽形成时的诸多信息。

Constituents and lithotypes of coal especially microlithotypes of coal and content of microscopic constituents of coal can explain environment of peat swamp which contained many information of peat swamps during their formation .

突出煤以三组分显微煤岩类型为主。

In the outburst coal , trimaceral microlithotype group predominates .

煤层气井煤心和煤储层露头的煤岩类型系统测量是获取煤储层评价参数的关键环节。

The key link to obtain the evaluation parameters of coal reservoirs is the coal cores from coal-bed gas wells and the coal rock from coal reservoir outcrop .

通过对影响吸附时间的因素的分析，作者认为：煤阶、灰分、温度、显微煤岩类型、割理发育程度及煤样粒度等参数是影响吸附时间长短的最重要的因素。

By analysis on the factors which affect desorption time , the authors considered that coal rank , ash content , temperature , microlithotype s , the developed degree of cleat and the grain size of coal samples are the most important factors to affect desorption time .

应用煤岩学观点和方法研究煤的成型性能，并探讨了煤岩类型与煤成型特性的关系。

In this paper the briquettability of fine coal is researched and the relations between the type of coal petrology are explored by using the method of the coal petrology .

将煤自燃指标气体分为三类，建立各类指标气体与煤温、煤阶、煤岩类型之间的数量关系。

The gas markers for prediction of spontaneous combustion fall into three categories , and the quantitative relations between gas markers and temperature , rank and macerals of coal are established .