资源描述:
《毕业设计(论文)-水对深部花岗岩巷道岩爆声发射实验研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、毕业论文GRADUATETHESIS设计题目:水对深部花岗岩巷道岩爆声发射实验研究2014年6月10日摘要摘要近些年,随着高地应力区的地下工程越来越多,岩爆已成为了地下工程中不可避免的地质灾害,常常造成重大的人员伤亡和财产损失。岩爆的影响因素众多,而水对岩石有很大的物理、化学和力学作用,进而对岩爆有很大的影响。如今,岩爆地质灾害的预测防治已成为公认的世界性难题。本文通过不同含水深部巷道花岗岩进行双轴加载声发射试验,通过声发射检测技术监测岩爆孕育、发生与发展的整个过程,对比分析水对岩爆的影响,通过分析声发射、力学参数寻找岩爆发生的规律,从而为岩爆监测提供研究基础和
2、技术手段。研究发现:(1)通过不同含水条件下深部花岗岩巷道岩爆模拟实验,发现干燥饱水花岗岩都有明显岩爆现象发生,但是饱水花岗岩岩爆发生时间有所滞后,岩爆发生爆裂程度有所降低;(2)分析岩爆实验力学参数得出干燥花岗岩弹性能大,饱水花岗岩弹性能略小;(3)通过分析岩爆实验声发射参数得出,干燥和饱水花岗岩声发射事件率和绝对能率在主破裂前都有一小段平静期,饱水花岗岩绝对能率有双峰性。关键词:岩爆;不同含水;声发射;力学IIIAbstractAbstractInrecentyears,moreandmoreundergroundengineeringwithhighgeo
3、stressareas,hasbecometheinevitableintheundergroundengineeringofrockburstofgeologicaldisasters,oftencausesignificantcasualtiesandpropertylosses.Theinfluencefactorsofrockburstisnumerous,andwateronrockshavealotofphysical,chemicalandmechanicalfunction,whichhasgreatinfluenceonrockburst.To
4、day,therockburstpreventionandcontrolofgeologicalhazardspredictionhasbecomearecognizedworldwideproblem.Basedonthedifferentwaterdeeproadwaygranitebiaxialloadingacousticemissionexperiment,throughtheacousticemissiontestingtechnologymonitoringrockburst,thewholeprocessofoccurrenceanddevelo
5、pment,analysistheinfluenceofwateronrockburst,throughtheanalysisofacousticemission,thelawofmechanicalparametersforrockburstoccurs,whichprovideresearchbasisandtechnicalmeansformonitoringrockburst.Thestudyfoundthat:(1)throughthedeeproadwayrockburstgraniteindifferentwatercutconditionsint
6、hesimulationexperiment,drysaturatedgranitehasobviousphenomenonofrockburstoccurred,butthefullwatergraniterockburstoccurrencetimelaggingbehind,therockburstdegreedecreases;(2)analysisonexperimentalmechanicsparametersofrockburstisdrygraniteelasticenergy,saturatedgraniteflexibilitycanbesl
7、ightlysmaller;(3)basedontheanalysisofrockbursttestparametersofacousticemission,dryandsaturatedgraniterateofacousticemissioneventsandabsolutedutybeforethemainrupturehasashortquietperiod,fullwatergranitebimodalityabsoluteduty.Keywords:rockburst;Differentwater;Acousticemission;mechanics
8、III目录目录摘要IAb