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《金川全尾砂新型充填胶凝材料激发剂配比与力学特性研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第66卷第5期有色金属(矿山部分)2014年9月doi:10.3969l/j.issn.1671‘4172.2014.05.017金川全尾砂新型充填胶凝材料激发剂配比与力学特性研究田立鹏,杨志强,高谦,把多恒(1_北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083;2.金川集团股份有限公司,甘肃金昌737lOO)摘要:针对金川全尾砂充填料,采用石灰、脱硫灰渣、芒硝和NaOH复合激发矿渣微粉,开展全尾砂新型充填胶凝材料试验。首先进行全尾砂物化特性分析,然后开展胶结充填体强度正交试验,最后以试验数据为学习样本,利用
2、神经网络模型进行胶凝材料激发剂配比学习,获得充填胶凝材料激发剂配比的隐含知识。在此基础上,进行不同激发配比胶结充填体强度预测分析,由此揭示充填体强度和激发剂的关系,获得了激发剂最优配比。结果表明,在相同条件下,全尾砂充填胶凝材料胶结充填体强度是32.5R水泥强度的2倍以上,而成本仅为水泥的2/3。但金川矿山采用下向分层胶结充填法开采,全尾砂充填胶凝材料仍不能满足充填体1.5MPa的3d设计强度,有待于进一步开展其早强特性试验研究。关键词:新型胶凝材料;全尾砂;抗压强度;正交试验;BP神经网络中图分类号:TD926.42文献标志码
3、:A文章编号:167l-4l72(2014)05—0074—05Experimentalstudyonactivatorproportionandmechanica1characteristicsforanewfillingcementitiousmaterialofwholetailingsinJinchuanNickelMineTIANLipeng,YANGZhiqiang~,GAOQJan,BADuoheng(1.KeyLaboratoryofHighEfficientMiningandSafetyofMetalMineM
4、inistryofEducationUSTB,Beijing100083,China;2.JinehuanGroupCo.,Ltd.,JinchangGansu737100,China)Abstract:Inthispaper,theexperimentalstudyonanewfillingcementitiousmaterialofwholetailingsisdevelopedfortheJinchuanwholetailingsfillingmaterialbyusingquicklime,desulfurization
5、ash,mirabiliteandNaOHtOactivatecompositelywaterquenchingblastfurnaceslag.Firstly,thephysicalandchemicalcharacteristicsofwholetailingsareana—lyzed,andthenstrengthorthogonalexperimentofcementitiousfillingbodyiscarriedout.Finally,theimplicitknowledgeoffillingcementitiou
6、smaterial’SactivatorratioareacquiredbyusingexperimentresultsaslearningsamplesandusingneuralnetworkmodeltOstudytheactivatorratiooffillingcementitiousmateria1.Thecementitiousfillingbody’Sstrengthresultsofdifferentactivatorratiosarepredictedonthebasisofimplicitknowledge
7、tOrevealtherelationshipbetweenthecementi—tiousfillingbody’Sstrengthandthecontentofactivator,thustOdeterminetheoptimalformulation.Theresultsshowthatthewholetailingscementitiousfillingbody’Sstrengthis2timesthan32.5Rcementfillingbodyunderthesamecondition,butthecostofnew
8、fillingcementitiousmaterialisonlyequivalenttocementitious2/3.ButbecauseJinchuanmineadoptsdownwardcut-and-fillminingmethod,thefillin
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