结果表明：煤的破碎程度是氧在煤体表面扩散作用的主要度量因子；
The result shows that the coal broken degree is the main token factor for measuring the oxygen free-diffusing characteristics in coal.
可磨性是煤加工利用过程中的一个重要指标，可磨性指数与煤的破碎机理、煤粒破碎后的粒度分布均有关系。
The grindability of coal is an important parameter in pulverized coal utilization, and the HGI(Hardgrove Grindability Index) is relevant to the coal pulverization and the particle size distribution.
深入分析了层间顶煤的破碎特点，指出层间顶煤的破碎效果是多因素综合作用的结果，而在不同的开采条件下将具有不同的放顶煤效果。
The stability of main and immediate roof structure and its influence on strata behaviour are analysed. The failure features of roof coal between top and bottom slice are thoroughly studied.
从煤的形成过程、煤岩特征、破碎机械、灰颗粒的破碎和磨耗特性等方面进行了研究。
The procedure of coal' s formation, the characteristics of coalrock, the crusher and particles' fragmentation and attrition are researched.
分析了采高和支架对顶煤应力和位移分布的影响，为顶煤破碎机理的分析和顶煤移动和运动规律的研究提供了依据。
Mining high and support have influence on stress and displacement distribute of top coal, which offer the basic law of mechanical for top coal broken analysis and movement.
PCB系列锤式破碎机可供化工、泥、材、电等工业部门做中碎或细碎各种中等硬度以下的脆性矿山、石和煤、灰石、渣等。
PCB series crusher is used for breaking medium degree of hardness materials, such as brittle ore, rock, coal limestone, slag, etc. in chemicals, cement, building materials and electricity industries.
破碎是煤燃烧过程中的一个复杂的物理化学过程。
Coal particle fragmentation represents a complicated physicochemical process during the combustion of coal.
该方法的初采钻爆技术是解决顶煤破碎与顺利放出的有效途径之一。
The technique of primary drilling and blasting is an effective way to solve the problem of crushing, caving and transportation.
论述了综放开采的顶煤破碎机理、变形破碎及回收规律；
The paper discusses the roof coal breakage principle, deformation breakage and retrieval law and analyzes factors affecting cover caving ability.
根据模拟结果，分析了开采范围内支承压力峰值的变化及对顶煤破碎的影响。
On the basis of model's results, effects in top-coal smash, and changes of peak value of abutment pressure within mining range are analyzed.
干净的煤送入破碎机和锅炉。
结果表明，诸因素均能诱发煤自由基的形成：煤体被破碎地越细小，自由基浓度越大；
The results show that the smaller coal size, the higher oxidation temperature, and the longer oxidation time, the higher concentration of paramagnetic center are able to form free radicals.
试验结果表明，经过哈氏可磨性测定仪后，各煤种的工业分析都发生了不同程度的变化，而煤粉破碎后的粒度分布取决于煤种的煤化程度，而与煤种的可磨性指数相关性较小。
The results(indicated) that the approximate analysis of the pulverized coal changed to different degrees, and the particle size distribution mainly depended on the coal rank but not the HGI.
巷道在掘进时由于受断裂构造的影响，瓦斯含量大，应力集中，煤体松软、破碎，掘进困难。
Because of crack structure, high gas amount, concentrated stress, soft and broken coal, it's very difficult for tunneling.
在总结现场试验效果的基础上，应用断裂力学理论分析了急倾斜煤层巷道放顶煤顶煤破断裂纹的扩展和破碎机理。
On the basis of summarizing testing effects, the extension of crack and the breaking mechanism of top coal caving in steep seam have been analyzed by applying fracture mechanics theory.
如果煤的热稳定性较差，煤炭入炉后就会因受热而产生崩裂、破碎，这样一来就会提高炉内阻力和增加带出物的数量。
If the poor thermal stability of coal, coal charging hind can because of be heated and produce split, broken, so they will improve furnace resistance and increase the number of bring out content.
它既能解决工作面旋转中心在反复支撑的情况下十分破碎、难以管理的问题，又能把端头的弧形三角煤基本回收。
This will not only solve the problem of the rotation center of the face was very broken in repeated supporting role and was very difficult to manage, but also will basic recovery t...
它既能解决工作面旋转中心在反复支撑的情况下十分破碎、难以管理的问题，又能把端头的弧形三角煤基本回收。
This will not only solve the problem of the rotation center of the face was very broken in repeated supporting role and was very difficult to manage, but also will basic recovery t...
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