摘要
为了探明矸石粉基胶结充填材料的析水特性,运用正交试验设计了以矸石粉、高水材料、水泥、粉煤灰为组合的胶结充填材料,采用极差分析、方差分析等方法,研究了矸石粉基质量浓度(A)、水泥含量(B)、粉煤灰含量(C)、高水材料含量(D)4个因素对胶结材料的析水率的影响情况;得到各因素对矸石粉基胶结充填材料析水特性影响的拟合公式。结果表明:基于极差分析的矸石粉基胶结充填材料的析水率影响程度为D>A>B>C,基于方差分析的材料析水率影响程度为D>B>A>C,析水率随着矸石粉浆质量分数的升高呈现下降趋势,随着水泥含量的增加则呈现先减少后增大再减少的趋势,随着粉煤灰质量增加呈现先减少后平稳的趋势,随着高水的增加呈现下降的趋势;高水含量对材料析水率的影响程度最大,矸石粉基质量分数与水泥质量对材料析水率影响相当,粉煤灰含量对材料析水率影响较小。
In order to explore the water bleeding characteristics of gangue powder-based cemented filling materials,the influence of four factors:gangue powder-based mass concentration(A),cement content(B),fly ash content(C)and high water material content(D)on the water bleeding rate of cemented materials was studied by using range analysis and analysis of variance;the fitting formula of the influence of various factors on the water bleeding characteristics of gangue powder-based cementation filling materials was obtained.The results showed that the degree of influence on the water bleeding rate of gangue powder-based cemented filling materials based on range analysis was D>A>B>C,and showed that the influence on the water bleeding rate of materials based on variance analysis was D>B>A>C,and the water bleeding rate showed a downward with the increase of the mass concentration of gangue slurry,with the increase of cement content,it showed a trend of first decreasing and then increasing and then decreasing;with the increase of fly ash quality,it showed a trend of first decreasing and then stable;with the increase of high water,it showed a downward trend.High water content had the greatest influence on the water bleeding rate of materials,the mass concentration of gangue powder and cement quality had comparable effects on the water bleeding rate of materials,and fly ash content had little effect on the water bleeding rate of materials.
作者
周仙丽
王家乐
李杰
ZHOU Xianli;WANG Jiale;LI Jie(China Energy Group Yulin Energy Co.,Ltd.,Yulin 719400,China;Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China;China National Accreditation Service for Conformity Assessment,Beijing 100062,China)
出处
《煤矿安全》
CAS
北大核心
2024年第4期164-168,共5页
Safety in Coal Mines
关键词
矸石粉基
胶结充填材料
析水特性
显著性分析
正交试验
gangue powder base
cemented filling materials
water bleeding characteristics
significance analysis
orthogonal test
