Fractal gradation of filling material and the optimum grading parameter

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Xie, Jincheng^1 ; Qiao, Dengpan^1 ; Wang, Jun^1 ; Li, Guangtao^2 ; Huang, Fei^1 ; Sun, Hongsheng^2

Kunming University of Science and Technology, Yunnan province, China^1

YUXI Mining Company, Yunnan province, China^2

关键词: Cementing strength;    Filling materials;    Fractal gradation;    Fractal theory;    Mining methods;    Prediction model;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012044/pdf
DOI  :  10.1088/1757-899X/274/1/012044

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to overcome the difficulty of choosing appropriate grading parameters of filling material for mines which are using filling mining method, the fractal theory is introduced, and a fractal equation of grading is built to represent gradation. Meanwhile taken Dahongshan copper mine as an example to discuss the relationship between fractal dimension and porosity, cementing strength under different parameters. A prediction model of cementing strength is built based on the experimental data, and the results show that the optimal grading parameters of Dahongshan copper mine is fractal dimension = 2.82. The optimized grading parameters of filling material in Dahongshan run steady, which greatly reduced the filling cost.