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Keywords coal seam thickness;substep drivage;support parameter;support method; 煤层厚度;分台阶掘进;支护参数;支护方法;
The comprehensive research showed that coalbed methane accumulation is mainly controlled by coal seam thickness,coal petrological composition,coal rank,adsorbability and good preservation conditions. 综合研究表明:该区煤层气富集的控制因素主要为煤层厚度、煤岩组分、煤级、吸附性能和良好的保存条件。
The paper introduces the sedimentary environment of coal and coal?bearing strata,the properties of coal seams and the causes resulted in the variation of seam thickness in laung mining district,Kalimantan Tengah,Indonesia. ? 介绍了印尼中加里曼丹拉翁煤矿区煤和含煤岩系的沉积环境、煤层特征以及引起煤厚变化的原因。
Keywords coal thickness coefficient of variation;mineable probability;CPR;stability grading of coal seam; 煤层厚度的变异系数;可采概率;变概比;煤层稳定型别;
Keywords coal seam;coal petrography;maceral; 煤层;煤岩类型;显微组分;
Keywords geophysical prospecting information;paleostructure;coal seam thickness;Fux-in basin; 物探信息;古构造;煤层厚度;阜新盆地;
Analysis on the Coal Seam Thickness Change and Geological Formation 煤层厚度变化地质成因分析
Keywords Enhong coal mining district;coalbed methane;coal seam thickness;coal petrological composition;coal rank;adsorbability;reservation condition; 恩洪矿区;煤层气;煤层厚度;煤岩组分;煤级;吸附性;保存条件;
Spectral moment method to inverse coal seam thickness by seismic data 地震资料谱矩法反演煤层厚度
Keywords coal;spontaneous combustion of coal seam;geologic hazard;Wuhai city; 煤炭;煤层自燃;地质灾害;乌海市;
Keywords Coal seam;hydraulic fracturing;microcrack;production increase; 煤层;压裂;微裂缝;增产;
Luocuoshan Minefield Structural Features and Their Influence on Coal Seam Thickness 罗厝山井田构造特征及其对煤层厚度的影响
Influences of Geologic Structure and Else Factors to Coal Seam Thickness in Dongyang Mine Field 东阳井田构造及其它因素对煤层厚度变化的影响
Influence adaptability of dragline to variation of coal seam thickness during mining operation period of large surface coal mine 露天煤矿拉斗铲作业对煤层厚度变化影响
Keywords Coal seam;Producing dust property;Producing dust rule;Explosivity of smut;Research; 关键词煤层;产尘特性;产尘规律;煤尘的爆炸性;研究;
Keywords coal seam water injection;magnetized water;physicochemical properties;seepage;wetness; 煤层注水;磁化水;理化特性;渗透;润湿;
1 mine,using ArcGIS software to analyze the data and acquiring surface contour,coal seam floor contour and coal seam thickness isoline in mine area. 影响顶煤垮落和破碎特性的主要地质因素有煤体强度、煤层采深、夹矸层特征、煤层厚度、煤体裂隙、煤层顶板特征等。
Keywords coal seam floor;the Fast Lagrangina Analysis of Continua;construct stress; 煤层底板;快速拉格朗日分析;构造应力;
Keywords Coal seam affusion;Affection factors;Rough set;Reduction;Information systems; 煤层注水;影响因素;粗糙集;约简;信息系统;
9 coal seam hosting pattern,coal-forming paleogeography and its evolution,and illuminated the control action of depositional environment toward coal seam thickness. 以勘探资料为基础,对该区9号煤层赋存规律、成煤古地理及其演化进行了分析研究,阐述了沉积环境对煤层厚度的控制作用。