| 采空区上覆岩体裂隙分形规律的实验研究 |
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| 引用本文： | 刘秀英. 采空区上覆岩体裂隙分形规律的实验研究[J]. 太原重型机械学院学报, 2009, 0(5): 428-431 |
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| 作者姓名： | 刘秀英 |
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| 作者单位： | 太原科技大学机械与电子工程学院,太原030024 |
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| 基金项目： | 太原科技大学校青年基金（2007102） |
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| 摘 要： | 以山西省霍州矿务局辛置煤矿2204采掘工作面为原型，利用相似材料模拟实验模拟采空区上覆岩体裂隙的形成过程扣分布状态，运用分形几何理论研究采空区冒落带、裂隙带和弯沉带岩体裂隙的分形规律。实验结果表明：上覆岩体裂隙分形维数随工作面推进经历了由小→大→小并趋于稳定的变化过程，开采结束且岩层基本稳定之后，其分形雏数为采动前分维值的0．5％-5％，且模型采空区边缘地带“三带”的分形维数值较采空区中心的分形维数值大。
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| 关 键 词： | 采空区 分形维数 相似模拟 |
Experiment Research on the Fractal Law of the Upper Rocks Crack of Goaf |
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| LIU Xiu-ying. Experiment Research on the Fractal Law of the Upper Rocks Crack of Goaf[J]. Journal of Taiyuan Heavy Machinery Institute, 2009, 0(5): 428-431 |
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| Authors: | LIU Xiu-ying |
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| Affiliation: | LIU Xiu-ying (College of Mechanical and Electronic Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China) |
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| Abstract: | Based on 2204 working surface of Xinzhi Mine in Huozhou City, Shanxi Provine, this paper simulates the formation process and the distribution status of the upper rock＇s crack by using the simulation experiment of similar materials, and investigates the fractal law of the upper rock＇s crack in caving zone, fractured zone and bend zone over goaf. The results indicates that with the advance of the working surface, the fractal dimension on the upper rock crack increases first and then decreases until it trends to stability. When the mined work finished and the rock＇s movment stabilizes, the fractal dimension is 0.5 - 5 percent of that before mining,The marginal fractal dimensions of the three zones the is bigger than the central fractal dimension. |
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| Keywords: | goaf fractal dimension simulation experiment |
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