安慶銅礦特大型采場(chǎng)充填體力學(xué)性能、損傷及穩(wěn)定性研究.pdf

1、長(zhǎng)沙礦山研究院碩士學(xué)位論文安慶銅礦特大型采場(chǎng)充填體力學(xué)性能、損傷及穩(wěn)定性研究姓名：鄧代強(qiáng)申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：@指導(dǎo)教師：姚中亮20050501碩士學(xué)位論文摘耍ABSTRACTThelarge—diameterIon魴olestopingwithsubsequent刪inhi曲stopeswasusedinAnqingcoppermine，wherestopeswerelaidperpendicularlyalongthestrike

2、oforebody；roomsandpillarswereminedindividuallythatistosayroomwasstopedatfirst，andthenpillarWaSrecovered；theexhaustedroomWasIdledwithcementedtadingsandtherecoveredpillarWasfilledwithtailingsInordertoensurethesuccessfulmin

3、ingofthespeciallargesizedpillarinthelargeareaatwesternorebodyOilLevel一400～一510mastudyOilmechanicsproperties，damageandstabilityofbackfillinthespeciallarge—sizedstopeinAnqingcopperminehasbeendoneinthispaper111edynamicandst

4、aticmechanicstestsofbackfillatadifferentratioofcementandtailingshavebeendoneinAnqingcoppermineTheph)7sicalmechanicsparameterssuchasdynamic／staticuniaxialcompressiveandtensilestrengthelasticmodulus，poisson’Sratioandcompre

5、ssivetoughnessindexesetcofbaekffllandtherelati011curveswereobtainednlechangesofthemechanicsparametersofbackfillandt11eirchanginglawswereanalyzedMeanwhiletheviewpointofenergyWasusedtoanalyzetherelationofenergyreleasingfro

6、mwallrockwithelasticdeformationenergyabsorbedbybackfillsupportstructureAccordingtothefllllstressstraincurvemeasuredUildertheconditionsofuniaxialcompressivestressandtmiaxialtensilestress，theconstitutivemodelofbackfilldama

7、geWasformulatedtheequationofdamageevolutionofbackfdlWasderived，andtheparametersofthismodelweredeterminedThebettercoincidenceoftheconstitutivemodelofbackfdldamageandthefullstressstraincurvewasshownwhichprovidesaca僦referen

8、cefortheengineeringanalysisanddesign111estabilityofbackfillintheprocessofminingthespeciallargesizedpillarinAnqingcopperminewascalculatedandanalyzedAccordingtotheresultsfromthemeasurementsofbackfdlmechanicsparametersandth