磷尾砂胶结充填露天试验研究

Experimental study on phosphate tailings cemented filling in open-pit

利用露天采坑充分模拟井下空区形态,直观地研究在灰砂比为1∶6和1∶4两种配比参数下细砂、磷尾砂胶结充填料浆的流动规律、充填体离析规律、充填体沉缩率、充填体透水规律、充填体初凝时间以及充填体强度影响因素,为磷矿山急倾斜中厚矿体井下采空区充填提供依据。

Study is conducted on fully simulating the flow rule of fine sand tailings cemented filling slurry and laws of segregation,settling and reduction ratio,permeability and initial initial setting time of filler as well as factors influencing strength of filler using the pattern of underground mined-out area intuitively at the cement-sand ratio of 1 ∶ 6and 1∶ 4,providing a reference for filling of the underground mined-out area with heavy inclined medium thick orebody in phosphate deposits.