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Parameters variation character Among Coal Seam Methane Content Determining 煤层瓦斯含量测定过程中各参数变化特征
coal seam methane content 煤层瓦斯含量
This paper makes a brief introduction of the basic method of determining the content of coal seam methane and the basic processing to determine the content of coal seam methone by analytical method. 本文简要介绍了测定煤层瓦斯含量的基本方法和解析法测定瓦斯含量的基本程序。
A discussion on factors relating to coalbed methane content of coal seam in the area of north China 华北地区煤层含气性影响因素探讨
Effect of rock's characteristic on roof strata on methane content in underlying coal seam 顶板岩性对下伏煤层甲烷含量的影响
The equation for methane storage and migration in compressible coal seam with double pores and the numerical analogue method were set up. 建立了双重孔隙、可压密煤层甲烷储运方程和数值模拟方法，模拟结果表明，解吸时间控制吸附甲烷的涌出。
Coal bed methane content is fairly high which threatened safety mining in some areas in Shuangyashan mining area. 双鸭山矿区局部区域煤层瓦斯含量较高,威胁到安全生产。
Based on the characteristics of the pressure declining, desorption, diffusion and fluid flow in the process of coalbed methane from matrix of coal seam. 针对煤层气产出过程中的降压、解吸、扩散、渗流等特点，应用非稳态解吸模型；
At the same time, methane effusing from the coal seam being worked increases, and the emphases of methane control could be put on the methane effusing from coal seam being worked. 而大采长综放工作面本煤层瓦斯涌出量增大，则需要增加通风量或者采用新的通风方式。
Methane content is high and spontaneous combustion occurred frequently in Yangquan coal mines, which have a serious influence upon the safe production in the mines. 阳泉矿区煤层瓦斯含量高,井下煤层自燃频繁,严重影响了煤炭安全生产。
Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
Is the only production of high methane content of cyano-dithio enterprises. 是国内唯一生产高含量二硫氰基甲烷的企业。
So it is feasible used the logging data to forecast coal seam gas content,and the applied value is enhance further. 证明用测井资料预测煤层瓦斯含量是可行的,从而进一步加强了测井资料的实际应用价值。
Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
This study provides a scientific method about studying the gas content of the coal seam unmined and provides the basic data about the safe mining. 这为未开采煤层瓦斯含量的研究提供了科学方法，并为该煤矿的安全开采提供了基础资料。
It was discovered that the gallium is more than marginal grade in content and enriched in lower coal seam and floor, and occurs mainly in diaspore. 发现样品中镓的加权平均含量超过边界品位，并在煤层下部和底板岩石中显著富集，其主要地质载体为硬水铝石。
The relationships between the permeability of the methane gas in coal seam and surface fractal dimension and tortuosity fractal dimension are proposed based on fractal theory and Darcy Law. 基于分形理论和达西定律,研究了孔隙的弯曲分形维数和表面积分形维数与瓦斯渗透率参数之间的关系;
The results show that the COD removal rate of the wastewater that was treated by USAB can reach as high as 55% and the methane content is 54.27%. 结果表明，经USAB处理工艺后废液中的COD去除率达到55%25，甲烷气体含量可达54.;27%25。
As we know,CO_2 has a higher adsorbability than CH_4.If CO_2 is injected into coal seam,CH_4 can be replaced by CO_2.By using this technology,we can develop the deeply buried coal bed methane in most of our coal basins. CO2的吸附能力是CH4的4倍以上,如果把CO2通过钻井注入到深部煤层中,由于其吸附能力的差异,CH4会被优先置换出来,利用该技术一方面实现封存CO2的目的,同时还能够开发深部CH4。这种置换技术在我国很多含煤盆地具有广阔的应用前景。
The Gaussian curvature of No.3 coal seam in Qinshui basin is calculated. 计算了沁水盆地3号煤层的高斯曲率。