The adsorption time of coal sample has a positive correlation with gas content and fracture growth.
样品的吸附时间与煤层含气量及裂隙发育程度呈正相关关系。
Taking block coal as experimental coal sample, gas emission characteristics of block coal was tested and studied.
以大块煤为实验煤样，实验研究了大块煤瓦斯放散特性。
The testing research about enhancing permeability rate by hydraulic cutting seam on outsize coal sample is introduced.
介绍了特大煤样采用水力割缝提高瓦斯渗透率的实验研究。
The determined result differences of the caking index of the same coal sample under different test conditions are discussed.
探讨了不同试验条件下同一煤样粘结指数测定结果的差异。
On this basis, the triaxial compressive test of coal sample is done using MTS815 servo-controlled rock mechanical test system.
采用MTS815岩石伺服试验系统进行了煤样三轴压缩试验。
The testresults show that the compressive strength of the briquettes has a linear relationship to content ofdull coal in the coal sample.
实验结果表明，型块抗压强度与粉煤试样中暗淡煤含量呈线性关系；随着暗淡煤含量的增加，型块的抗压强度增强，煤成型性能变好。
The study has shown that: the coal shows much less brittle failure because the grout in it can continue the deformation of the coal sample;
研究结果表明：浆液的存在延续了煤样的变形，减少了煤样试件的脆性破坏；
The raw coal sample and the treated coal sample with metal corrosion interaction method using infrared spectrum and X ray diffraction were analysed, respectively.
利用红外光谱和X射线衍射对金属腐蚀电偶法处理前后的煤样进行了分析。
The error in division, screening and drying processes in process of preparing coal sample is analysed. The reasons of error and the corresponding countermeasure are put forward.
分析了煤样制备过程中误差的来源，包括制备过程中的缩分误差、筛分和干燥过程中产生的误差等，并对误差产生的原因提出了相应的对策。
Finally, according to the experiments of Yanzhou coal sample, the results of the numerical simulation on the column coal spontaneous combustion are consistent with the experiments.
最后，以兖州东滩矿煤样自然发火实验为基础，对圆柱形煤样自燃过程进行数值模拟，其结果与实验基本一致。
Fast speed and great changes are the characteristics of the initial desorption gas course from coal, so it is difficult to measure the initial desorption gas flow from coal sample.
煤样中瓦斯的初始解吸过程的特点是速度快、变化大，初始解吸的瓦斯流量难以检测。
The results manifested that the floatation effect of BET is better than that of other common floatation reagents and has a higher selectivity especially in high-sulfur coal sample floatation.
实验结果表明，BET的浮选效果要优于普通煤用浮选药剂，尤其是用于高硫煤的浮选时，它有很强的选择性。
It serves division of granular materials such as coal, ore samples in laboratory. It can improve division efficiency and quality. It is prepared according to coal sample preparing method in GB474.
适用于试验室对煤样、矿样等颗粒物料的缩分有较强的均匀性，提高缩分效率和质量，依据GB474《煤样制备方法》生产。
It serves division of granular materials such as coal, ore samples in laboratory. It can improve division efficiency and quality. It is prepared according to coal sample preparing method in GB474.
适用于试验室对煤样、矿样等颗粒物料的缩分有较强的均匀性，提高缩分效率和质量，依据GB474《煤样制备方法》生产。
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