世界首辆35t双动力铰接式卡车成功下线-论文.pdf

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1、王新民等：超细全尾砂充填配比优化正交试验研究学学报，2009，19(6)：166—171．[15]邓代强，汪令辉，王发芝，等．采空区充填配比参数设计[14]张钦礼，姜志良，王石，等．高浓度超细全尾砂充填料浆及工程检验[J]．福州大学学报：自然科学版，2013，41管道输送阻力模型[J]．科技导报，2014，32(24)：51—55．(2)：207—212．OrthogonalTestofOptimizationofUltrafineWhole-tailingsBackfillMaterialsWANGXinmin，HU

2、Yibo，WANGShi，LIUJixiang，CHENYu，BIANJiweiSchoolofResourcesandSafetyEngineering，CentralSouthUniversity,Changsha410083，Hunan，ChinaAbstract：Forthepurposeofstudyingtheinfluenceofcement—to—tailingsmassratio，massfractionofsolidphasesandtemperatureforperformanceindicato

3、rsofbackfillmaterial，controlparametersofbackfillmaterialswhichfittedminingrequirementsindiferenttemperaturerangesweredetermined．Consideringengineeringpracticeformagnetiteinnorthernpart，whole—tailingsoftheminewereselectedasfillingaggregate．Anewcementingmaterialsu

4、ppliedbyauniversitywasselectedasbinder．Basedonthemethodoforthogonaltest，theoptimizationexperimentofbackfillmaterialswasperformed．Sensitivitiesofthefourindicatorstothethreefactorswereobtained．Thefourindicatorswerecompressivestrength，bleedingrate，collapsingslumpan

5、dinitialsettingtime．Changingtrendsofindicatorswithfactorswerelikewiseidentified．Additionally，themostoptimalcompositionwasobservedinthisstudy．Theresultsdemonstratedthatcompressivestrengthcanbeimprovedandshortentheinitialsettingtimebyincreasingcement—to-tailingsma

6、ssratio．Thebleedingrateandcollapsingslumpweremostsensitivetomassfractionofsolidphases．Moreover．thepropertiesofbackfil1materialappearedtobebetterwithgoaftemperatureincreasing．Whenthetemperaturewerearound10℃and20℃．optimalproportionwasthatcement—to-tailingsmassrati

7、owas1：6andmassfractionofsolidphaseswasaround70％．Whenthetemperaturewasapproximately30℃．optimalproportionofbackfillmaterialspresentedwithcement—to’tailingsmassratioabout1：8andmassfractionofsolidphasesaround72％．Itcanbeconcludedthatapplyingdiferentparametersunderdif

8、erentgoaftemperaturewasconductivetoreducingthefillingcost．Keywords：back—fillingproportion；orthogonaltest；temperature；back—fillingmethod；whole—tailing世界首辆35t双动力铰接式卡车成功