基于指标满意度的多层矿体回采顺序数值模拟-论文.pdf

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1、研二研究论文(Papers)科技导报2013。31(10)基于指标满意度的多层矿体回采顺序数值模拟邓红卫，黄伟。胡普仑，高峰中南大学资源与安全工程学院，长沙410083摘要回采顺序是采矿工程的重要研究内容之一，合理的回采顺序对采场稳定性和采场生产能力有重要影响。针对老厂13-8矿群多层矿体的赋存特点和开采技术条件，采用3Dmine-MIDAS，GTS-FLAC∞耦合的数值模拟方法。对多层矿体回采顺序进行数值模拟，提出了4种回采顺序优化方案：下向下行式、下向上行式、上向下行式、上向上行式，并从应力场、位移场、塑性区3方面综合考虑。得到了4种回采顺序优

2、化方案的模拟结果；运用基于指标满意度的多指标综合评价模型对模拟结果进行满意度分析。结果表明。4种回采顺序优化方案的多指标综合满意度分别为0．684，0．641，0．653和0．683。其中，上向上行式开采方式的满意度为0．683。因此。上向上行式开采在理论上可行。关t词指标满意度；多层矿体；回采顺序；数值模拟中圈分类号TD853文t标志码Adoi10．39814．issn．1000—7857．2013．10．005NumericalSimulationofMultilayerOrebodyMiningSequenceBasedontheIndexC

3、ontentmentDegreeDENGHongwei，HUANGWei，HUPulun，GAOFengSchoolofResourcesandSafetyEngineering，CentralSouthUniversity，Changsha410083，Chinagbtma~AbstractMiningsequenceisoneoftheimportantresearchcontentsforminingengineering．Differentsecondarystressfieldwouldbeformedwithdifferentminin

4、gprocessandfillingsequence．Bymeansofreasonablearrangementandadjustmentoftheminingsequenceoforebody，thestressdistributionofthesurroundingrockisabletoberemarkablychanged，thecurentexcavatedworkingfaceisabletobeinthestress—reducedareaandthephenomenonofstressconcentrationincourseof

5、miningprocesscouldbealsoavoided．Rationalminingsequenceisabletolargelyimprovethestabilityofstopeandthesecurityofworkingface．AccordingtomuhilayerorebodyoccurrencecharacteristicsandminingtechnicalconditionsofLaoehang13—8oregroups．byusing3Dmine—MIDAS／GTS—FLACcouplednumericalsimula

6、tionmethod，numericalsimulationstudyontheminingsequenceofmuhilayerorebodyiscarriedoutandfourkindsofoptimizationschemesofmuhilayerorebodyminingsequenceareputforward，namely，downwardminingfromuppertolower,overheadminingfromuppertolower，downwardminingfromlowertoupper，andoverheadmin

7、ingfromlowertoupper．Byapplyingthemulti-indexcomprehensiveevaluatingmodelbasedonindexcontentmentdegreeandconsideringstressfields，displacementfields，andcrackfieldscomprehensively，thefourmulti—indexcomprehensivecontentmentdegreesoftheoptimizationschemesforminingsequenceare0．684，0

8、．641，0．653，and0．683，respectively．Thecontentmentdegreeoftheove