矿山充填膨胀材料及其性能研究
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摘要
针对自主研发的具有膨胀性及高固水的新型充填材料,分析膨胀及固化机理,并通过固水及膨胀性试验表明其最大水固比可达3∶1、充填体体积最大膨胀率为50.02%,开展充填体强度试验,结果表明:其最大单轴抗压强度可达到9.73MPa,同时采用最小二乘法拟合单轴抗压强度与抗折强度、抗拉强度的关系式;采用SEM对充填体进行微观结构分析,揭示了充胶结膨胀填体强度增长规律。
This paper analyzes the mechanism of dilatation and high water retention of the independently researched new cementing material.It is proved by the experiment of dilatation and water retention behavior that the maximum water-solid ratio of this new material is 3∶1 and the maximum volume dilatation rate of the backfill is 50.02%.The experiment of compression strength shows that the maximum uniaxial compression strength of the backfill can reach up to 9.73 MPa.The relationship of uniaxial compression strength with flexural strength and tensile strength are fitted by the least square method.Moreover,this paper explains the increasing law of the strength of the backfill in principal by analyzing its microstructure with Scanning Electron Microscope.
This paper analyzes the mechanism of dilatation and high water retention of the independently researched new cementing material.It is proved by the experiment of dilatation and water retention behavior that the maximum water-solid ratio of this new material is 3∶1 and the maximum volume dilatation rate of the backfill is 50.02%.The experiment of compression strength shows that the maximum uniaxial compression strength of the backfill can reach up to 9.73 MPa.The relationship of uniaxial compression strength with flexural strength and tensile strength are fitted by the least square method.Moreover,this paper explains the increasing law of the strength of the backfill in principal by analyzing its microstructure with Scanning Electron Microscope.
引文
[1]王新民.深井矿山充填理论与技术[M].长沙:中南大学出版社,2005.
[2]杨小聪.尾矿和废石综合利用技术[M].北京:冶金工业出版社,2018.
[3]钱鸣高.绿色开采的概念与技术体系[J].煤炭科技,2003(4):1-3.QIAN Minggao.Conception and technology system of green mining[J].Coal Science and Technology Magazine,2003(4):1-3.
[4]裴启涛.影响胶结充填体质量的主要因素及控制措施[J].现代矿业,2009(5):99-102.PEI Qitao.Main influence and control methods of quality of cementing filling material[J].Modern Mining Magazine,2009(5):99-102.
[5]彭家惠,林芳辉.二水石膏粉煤灰胶结材的研究[J].混凝土与水泥制品,1995(6):16-19.PENG Jiahui,LIN Fanghui.Research of cementing materialsdihydrate gypsum and fly ash[J].Concrete and Cement Products,1995(6):16-19.
[6]王静.钢铁企业固体废物产生与综合利用[J].环境保护与循环经济,2012(3):40-41.WANG Jing.Generation and overall utilization of solid residue of steel industry[J].Environmental Protection and Circular Economy,2012(3):40-41.
[7] WEIF,GRUTZECK M W,ROY D M.The retarding effect of fly ash upon the hydration of cement Paste:the first 24hours[J].Cement and Concrete Research,1985,15(1):174-184.
[8] TAYLORH F W.Cement Chemistry[M].London:Thomas Telford Publishing,1997.
[9]石建新.浆体膨胀充填材料性能研究与应用[M].徐州:中国矿业大学出版社,2013.
[10] CODY A M,LEE H,CODY R D,et al.The effects of chemical environment on the nucleation,growth,and stability of ettringite[Ca2Al(OH)6]2(SO4)3·26H2O[J].Cement and Concrete Research,2004,34:869-881.
[11] HEWLETT P C.Lea's chemistry of cement and concrete[M].London:Arnold,1998.
[12] NEWMAN J,CHOO B S.Advanced concrete technology:constituent materials[M].Oxford:Butterworth-Heinemann,2003
[13]付毅,王劼.含C4A3S矿物硅酸盐水泥充填性能研究[J].矿冶,2009,18(4):4-8.FU Yi,WANG Jie.Research of backfill behavior of silicate cement contain C4A3S mineral[J].Mining and Metallurgy,2009,18(4):4-8.
[14]石建新.高水膨胀材料及胶固充填技术[M].济南:山东科学技术出版社,2011.
[2]杨小聪.尾矿和废石综合利用技术[M].北京:冶金工业出版社,2018.
[3]钱鸣高.绿色开采的概念与技术体系[J].煤炭科技,2003(4):1-3.QIAN Minggao.Conception and technology system of green mining[J].Coal Science and Technology Magazine,2003(4):1-3.
[4]裴启涛.影响胶结充填体质量的主要因素及控制措施[J].现代矿业,2009(5):99-102.PEI Qitao.Main influence and control methods of quality of cementing filling material[J].Modern Mining Magazine,2009(5):99-102.
[5]彭家惠,林芳辉.二水石膏粉煤灰胶结材的研究[J].混凝土与水泥制品,1995(6):16-19.PENG Jiahui,LIN Fanghui.Research of cementing materialsdihydrate gypsum and fly ash[J].Concrete and Cement Products,1995(6):16-19.
[6]王静.钢铁企业固体废物产生与综合利用[J].环境保护与循环经济,2012(3):40-41.WANG Jing.Generation and overall utilization of solid residue of steel industry[J].Environmental Protection and Circular Economy,2012(3):40-41.
[7] WEIF,GRUTZECK M W,ROY D M.The retarding effect of fly ash upon the hydration of cement Paste:the first 24hours[J].Cement and Concrete Research,1985,15(1):174-184.
[8] TAYLORH F W.Cement Chemistry[M].London:Thomas Telford Publishing,1997.
[9]石建新.浆体膨胀充填材料性能研究与应用[M].徐州:中国矿业大学出版社,2013.
[10] CODY A M,LEE H,CODY R D,et al.The effects of chemical environment on the nucleation,growth,and stability of ettringite[Ca2Al(OH)6]2(SO4)3·26H2O[J].Cement and Concrete Research,2004,34:869-881.
[11] HEWLETT P C.Lea's chemistry of cement and concrete[M].London:Arnold,1998.
[12] NEWMAN J,CHOO B S.Advanced concrete technology:constituent materials[M].Oxford:Butterworth-Heinemann,2003
[13]付毅,王劼.含C4A3S矿物硅酸盐水泥充填性能研究[J].矿冶,2009,18(4):4-8.FU Yi,WANG Jie.Research of backfill behavior of silicate cement contain C4A3S mineral[J].Mining and Metallurgy,2009,18(4):4-8.
[14]石建新.高水膨胀材料及胶固充填技术[M].济南:山东科学技术出版社,2011.