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Experimental study on system of filling mined bed with bulk unsized tailing and consolidating it with polyhydrite materials in Lingshan Gold Mine

Yang Bensheng (Hebei Institute of Architectural Science and Technology)  
This paper introduced the experiment of filling mined bed with unsized tailing and consolidating it with polyhydrite materials which is firstly conducted in China by Lingshan Gold Mine.Also,this paper analysed the problems existed in the original system of filling with river sand and consolidating with cement,thus developed a new system of filling with polyhydrite consolidating materials and offered related designing parameters.
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