采空区垮落岩体空隙储水分形计算及应用研究

doi:10.13722/j.cnki.jrme.2014.1421

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Abstract In order to calculate the storage capacity in void ofcaving rock in the goaf，the fractal theory was introduced to research the related parameters of storage void in the goaf of Yushenfu coalfields in North Shanxi. Based on the measurement data of fractal dimension from caving rock void in the goaf，the model for void structure of caving rock in the goaf was set up by Menger sponge fractal model. The void ratio and residual expandition coefficient formulas of caving rock in the goaf were deduced，then the storage capacity in void of caving rock in the goaf was calculated. The 32301working face in Shennan coal field was taken as engineer background to study the fractal calculation and application of water storage in void of caving rock in the goaf. The results showed that：the fractal dimension of caving rock void in the goaf was 2.93，the storage performance was good. And the largest storage capacity was 3848231.93m3 calculated by fractal method，it was consistent with the actual storage capacity in the field. Using fractal method to calculate the storage capacity of void of caving rock in the goaf was feasible，it has important practical significance for using limited water resources effectively in arid and semi-arid mining areas.

Key words： void of caving rock in the goaf water storage the fractal theory void content residual broken expand coefficient

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2014.1421 OR http://www.rockmech.org/EN/Y2015/V34/I07/16

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