...息 关键词 ： 三轴压缩试验 煤岩强度 变形特征 围压 [gap=1070]Keywords : triaxial compression test； coal strength；deformation characteristics；confining pressure ..
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煤巷顶板多数是岩体强度较低的沉积岩，层状岩体结构是沉积岩的主要特征之一。
Most rock roof of roadway is sediment rock, so its intensity is low, the stratification is a common rock mass structure in coal mines.
研究表明：煤的孔隙特征主要取决于煤化程度、显微煤岩组份、矿物质含量和断裂破坏强度。
It has been found that the pore characteristics of lump coal mainly depend on degree of coalification, types of macerals, content of inorganic matters and intensity of fissuring.
根据煤岩体的抗压强度，给出了镐形截齿破煤过程中截割力的计算公式。
According to the compressive strength of coal rock mass, the paper provided the calculation formula of the pick cutting force during the coal cutting operation.
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