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- Research on coal bedding structure is the theory foundation and precondition of coal seam gas exploitation. 煤体层理结构的研究是煤层气开发开采的理论基础和前提条件。
- Keywords mine field;coal bed structure;coal measure;coal seam;interrelate;direction of coal exploration; 井田;含煤建造;煤系;煤层;正消长;找煤方向;
- coal bed structure 含煤建造
- It is a new way of the utilization of coal bed gas. 为井下抽放煤层气的利用提出了一条新的途径。
- Coal Bed Methane Drilling and Completion Technology in Western Basin of U.S. 美国西部盆地煤层气钻井和完井技术。
- Preliminary research on structural law of coal bed beneath nappe in No. 对新集二矿推覆体下煤层构造规律进行了初步研究。
- Graphite deposit of Heye was formed by metamorphism of the Permian coal bed. 荷叶石墨矿是由二叠系煤层变质而成的石墨矿床,石墨与煤呈同层异矿关系。
- By means of some parameters that reflect breaking strength of coal body structure, changing features of coal body structure at No.3 coal bed of No.1 mine in Shizuishan Mine Area are studied. 采用反映煤体结构破坏程度的若干宏观与测试参数,研究了石嘴山一矿井田主采三层煤的煤体结构变化特征。
- A novel FEA model of the precise bearing-outring grinder is built and based on the model the influence of the bed structure on its dynamic behavior is studied. 其过程如下,首先建立了磨床的有限元模型,并分析了床身中筋板结构对床身动态特性的影响。
- A novel FEA model of the precise centreless grinder is built and based on the model the influence of the bed structure on its dynamic behavior is studied. 建立了无心外圆磨床的有限元模型,并分析了床身筋板结构对床身动态特性的影响。
- Coalfield structure was controlled by NNE structure.Coal bed structure thinning belt was also extended in NNE directions, Southern Hebei coalfield. 煤田构造主要受北北东向构造所控制,其煤层构造变薄带也主要呈北北东向伸展。
- For measuring exactly on gas content of coal bed,required high core recov ery and short time to hoisting and loa ding. 为了准确测定煤层含气量,要求取心作业必须有高的收获率和尽可能短的提钻及出筒装罐时间。
- Several coal beds are developed in backswamp deposits. 河漫沼泽上发育多套煤层。
- The adsorption bed structure filling sorbent in tube and flowing heat transfer media out of tube was designed and the corresponding mathematical model was established. 摘要设计了管内填充吸附剂,管外走传热介质的新型吸附床结构,建立了相应的数学模型。
- The existing mine gas in coal bed occurs mostly in the free state,the adsorption state and the dissolved state. 瓦斯气体在煤储层中的赋存状态主要有游离态、吸附态和溶解态。
- The hydro-geological parameters of Triassic age coal bed 3 of Dongtan Coal Mine be calculated with it. 利用相关方程求出了全东滩矿3煤砂岩顶板含水层的水文地质参数。
- Roadway heading is the forerunner for clearly knowing coal bed geological conditions. 掘进巷道是全面、准确了解矿井煤层地质条件的先导。
- The coal bed methane (CBD) utilization level is low due to the lack of technology, fund and market demand. 由于技术、资金和市场的欠缺使得中国煤矿瓦斯利用水平还不是很高。
- The mining of shallow coal bed in Shenfu Mine is seriously threatened by suffosion hazard of coal shaft. 神府矿区浅部煤层开采受到矿井溃砂的严重威胁。
- Dynamically optimized designing is carried out for the bed of CNC lathe CK1416 with support of CAD/CAE and based on the dynamic and FEM model analysis on the bed structure, and the modified bed has a good dynamic performance . 基于CK1416型数控车床床身的动态测试和有限元建模分析,在CAD/CAE技术的支持下,对床身结构进行了动态优化设计,改进后的车床床身具有良好的动态特性。