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首页> 外文会议>2007采矿科学与安全技术国际学术会议 >Fractal Characteristic of Fissured Coal's Crack Evolution under the Action of Abutment Pressure
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Fractal Characteristic of Fissured Coal's Crack Evolution under the Action of Abutment Pressure

机译：基台压力作用下裂隙煤裂纹演化的分形特征

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摘要

Quantitative description for the evolution of crack in fissured coal is one of the fundamental problems of rock mechanism. Based on the field observation of the abutment pressure, the coal mass' cracking process was simulated on the compress machine, and the whole stress-strain curve was obtained. Using fractal geometry theory, thequantitative description of the evolution of fissure system in coal sample is achieved. It is discovered that, the relationship between the fractal dimension of the crack and the abutment pressure is polynomial expression. Based on damage mechanics, the constitutive equation of fissured coal was deduced.
机译：定量描述裂隙煤中裂缝的演化是岩石机理的基本问题之一。基于对接压力的现场观测，在压缩机上模拟了煤团的开裂过程，得到了整个应力应变曲线。利用分形几何理论，对煤样中裂隙系统的演化进行了定量描述。发现裂纹的分形维数与基台压力之间的关系为多项式。基于损伤机理，推导了裂隙煤的本构方程。

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