煤矿安全2017，Vol.48Issue(10)：69-72,75,5.DOI:10.13347/j.cnki.mkaq.2017.10.018
矸石膏体充填材料配比优化
Mixture Ratio Optimization of Mine Gangue Paste Filling Materials
摘要
Abstract
To optimize the mixture ratio of gangue paste filling for Daizhuang Coal Mine,firstly,28 groups of experiments were carried out by using uniform design to study the influence of different mixture ratio on slump,layering degree,bleeding rate,early strength and long term strength of paste.Then,a calculation formula for the long term strength of paste was proposed according to the theory of key strata.Moreover,the filling performance parameters were fitted by Matlab software.At last,the optimal mixture ratio is that the ratio of fly ash to cement is 3.2,the ratio of broken gangue to cement is 4.5 and slurry concentration of paste is 75.3％.Under these conditions,the results of filling performance parameters are slump of 184.44 mm,layering degree of 13.87 mm,bleeding rate of 1.48 mm,0.16 MPa and 3.89 MPa of early strength and long term strength of paste respectively,which are agreement with the experimental results.关键词
矸石膏体充填/充填材料配比优化/坍落度/分层度/泌水率/均匀设计/充填开采Key words
gangue paste filling/mixture ratio optimization of filling materials/slump/layering degree/bleeding rate/uniform design/backfill mining分类
矿业与冶金引用本文复制引用
孙希奎,强辉,施现院,常庆粮..矸石膏体充填材料配比优化[J].煤矿安全,2017,48(10):69-72,75,5.基金项目
山东省泰山学者专项经费资助项目(201309) （201309）
