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Keywords coal structure;Jixi coal;X-ray diffraction;metamorphism; 煤结构;鸡西煤;X-射线衍射;变质程度;
The importance of coal structure at both molecular and petrographic evels is in a closeed relation to coal preparation, processing, combus tion and environmental aspects. 它直接关系到煤炭加工转化技术的发展和煤利用对环境造成污染的改善。
Keywords oal;electrical conductivity;coal structure; 煤;导电性;煤结构;
In order to determine the mechanism of the coal and gas outburst in the syncline, it should be analyzed from stress, the property of coal structure to the press and content of gas in the syncline. 摘要为了确定向斜构造煤与瓦斯突出机理，从应力、煤体结构特征和瓦斯压力及含量等方面对向斜构造进行了分析。
Two patterns of reformed coal reservoirs in reformed coal basins, the reformation of coal structure and reformed fracture by aposedimentary fillings and forming of the fillings are introduced. 阐述了改造型含煤盆地煤储层被改造的两种形式;煤体结构的改造及构造煤的形成原因;后生充填物对煤层孔隙的改造及形成原因。
Ac-cording to the distributing regularity of these controlling coal structure, four regions are classifled anddifferent research methods should be taken for coal exploration in each region. 根据控煤构造在空间上的展布规律，对本区自北而南划分为四个控煤构造类型区，并指出在不同的控煤构造类型区内进行找煤工作应采取不同的措施和研究方法。
Keywords coal gangue;calcinate;activate;pore structure; 煤矸石;煅烧;活化;孔结构;
Keywords coal winning machine;epicyclic structure;target function; 采煤机;行星机构;目标函数;
Keywords ultrasonic;traveltime-distance curve;coal structure;coal-gas outburst; 超声波;时距曲线;煤体结构;煤与瓦斯突出;
Keywords Coal activated carbon adsorbent deash; 煤质活性炭;吸附剂;脱灰;
Research on Coal Structure Using FT-IR 傅立叶红外光谱法对煤结构的研究
Keywords coal rod;gasification;sodium humate; 煤棒;制气;腐植酸钠;工艺;
Keywords coal water slurry;dispersant;adsorption; 水煤浆;分散剂;吸附作用;
Keywords coal tar pitch;polymer;3;4-benzopyrene; 煤焦油;沥青;聚合物;3;4-苯并芘;
Keywords coal seam;coal petrography;maceral; 煤层;煤岩类型;显微组分;
Keywords coal refuse;kaolinite;illite;filler; 煤矸石;高岭石;伊利石;填料;
Keywords coal;deashing of coal;ultraclean coal; 煤;煤脱灰;超净煤;
Keywords coal gasificationn slag lurgi gasifier; 煤气化;液态排渣;鲁奇炉;
Keywords coal gangues cordierite magnesite; 煤矸石;菱镁矿;堇青石;
Keywords coal mining;roof managemenet;actuality; 关键词煤矿;顶板管理;现状;