重大社2024教材样章-高烈度岩爆的超前应力释级控制爆破方法.pdf

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Abstract

WiththedevelopmentofengineeringconstructioninChina,therearemoreandmoretunnel

projectsbuiltorplannedinwesternChina.Duetothecomplexgeologicalconditionsinthese

areas,andthedeepeningdepthofthosetunnels,thehighgeostressindeeptunnelsusuallyleads

tovariousdegreesofrockbursts,resultinginpersonalcasualties,equipmentlosses,delaysin

constructionperiods,orvariouseconomicrisks.Manyscholarsathomeandabroadhaveconducted

alotofresearchesonrockburstscausedbyhighgeostress,andalsoputforwardsomepreventive

measures.However,sincetheoccurrencesofthoserockburstshavesuchcharacteristicsas

uncertainty,abruptnessandconcealment,therestillexistmanydisputesinthemechanism,

systematicmonitoring,earlywarningdevicesandpreventivemeasuresofrockbursts.Inparticular,

thereisnoeffectivecountermeasureintheengineeringfieldtocontrolserioushigh-intensityrock

bursts.Thusthisbookstudiesthedeformationmechanismofthosehigh-intensityrockburstsand

putsforwardsapre-releasede-stressblastingmethod,i.e.bycombiningwithaseriesof

reasonabledrillingandblastingparameters,anartificiallycontrolledblastingmethodcanbeused

toweakentheintensityofrockbursts,andtoprovidesolutionstotherockburstsinhigh-stress

tunnelsandundergroundprojects.

Basedonthestudyofthemechanismofthepre-releasede-stressblastingforthosehigh-

intensityrockbursts,combinedwithnumericalsimulations,somereasonablede-stressblasting

parametersareselected,includingthediameteroftheborehole,thespacingbetweenboreholes,

thedepthoftheborehole,theangleoftheborehole,andsoon.Someon-sitetestswerealsoheld

toverifythevalidityofthismethodandtherationalityoftheparameters.Thebookhasobtainedthe

followingresearchresults:

鈶燭hroughthenumericalsimulationsofthephysicalandmechanicalpropertiesofsurro

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