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通过实验研究了煤体受振后力学性质的变化规律。采用分形几何的方法，研究了煤体在受振后裂隙的变化规律，发现受振后煤体的分形维数增大，表明小尺度的煤体裂隙增加，且经过一定的振动时间后，分形维数趋于稳定；研究了振动对煤体力学性质的影响，发现受振后煤体的抗压强度、弹性模量和降模量降低，且受振时间越长或初应力水平越高，振动对煤体力学性质的影响越明显。
The variation of mechanical properties of coal after vibration was studied experimentally. Fractal geometry was used to study the variation law of coal fractures after vibration. The fractal dimension of coal after vibration was found to increase, which indicates that the fracture of small scale coal increases, and after a certain vibration time, the fractal dimension The effect of vibration on the mechanical properties of coal was studied. It was found that the compressive strength, elastic modulus and modulus of decrease of the coal after vibration, and the longer the vibration duration or initial stress level, The more obvious the influence of mechanical properties.