通过煤体强度实验建立了其强度准则，并结合工程实际建立了能量判据。
Based on the strength testing of coal, a strength criterion is set up. The criterion of energy is put forward in the light of engineering practice.
本文根据不同煤体强度条件下综放开采顶煤的位移曲线，采用盒维数的分形计算方法对其进行了维数分析。
Based on the displacement curves of top coal with different strength, the fractal dimension of which is analyzed and calculated according to the box dimension.
对工作面煤体的力学性质进行定量表征，抗截强度是最可靠的综合性指标。
During conduct quantitative express to mechanics nature of work face coal, cutting strength is the most dependable comprehensive norm.
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