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钻孔注浆在井下水害治理的应用实例
Title:ApplicationofDrillingandGroutingMethodforGroundwaterManagement:CaseStudies
Introduction:
Groundwaterisavitalandvaluablenaturalresourcethatplaysacrucialroleinsustainingecosystemsandmeetingthewaterneedsofhumans.However,excessivegroundwatercanleadtovariouswater-relatedhazards,suchaswaterlogging,landsubsidence,andfoundationinstability.Totacklethesechallenges,drillingandgroutingmethodshavegainedconsiderablerecognitionfortheireffectivenessingroundwatermanagement.Thispaperaimstoexplorereal-lifeapplicationsofthistechnique,highlightingitsbenefitsandlimitations.
1.CaseStudy:Groundwatercontrolfortunnelingprojects
Tunnelingbelowthewatertablepresentssignificantchallengesduetothehighwaterpressureandpotentialflooding.Thedrillingandgroutingmethodisextensivelyemployedforcontrollinggroundwaterduringtunnelconstruction.Bydrillingboreholesalongthetunnelalignmentandinjectinggroutmaterialunderpressure,alow-permeabilitygroutcurtainisformedtoreducewateringress.Casestudiesofsuccessfultunnelingprojects,suchastheChannelTunnelinEuropeandtheEastSideAccessProjectintheUnitedStates,demonstratetheeffectivenessofdrillingandgroutingingroundwatermanagement.
2.CaseStudy:Foundationstabilizationinconstructionprojects
Inareaswithweakorloosesoilconditions,unstablefoundationscanleadtostructuralintegrityissuesinbuildingsandcivilstructures.Drillingandgroutingmethodcanbeusedtoenhancefoundationstabilitybyinjectinggroutmaterialintovoidsorloosesoillayers.Thegroutfillsthegaps,consolidatesthesoil,andincreasesitsload-bearingcapacity.NotableexamplesincludetheMillauViaductinFrance,wheresoilstabilizationwasperformedtosupportthetallestbridgeintheworld,andTheShardinLondon,whichrequiredgroundimprovementtowithstandhighverticalloads.
3.CaseStudy:Controlofgroundwaterinflowinundergroundmining
Undergroundminingoperationsoftenencounterwaterinflowsthatcanhinderminingoperationsandposesafetyrisks.Drillingandgroutingmethodofferseffectivecontrolofgroundwaterinflowbycreatinganimpermeablebarrieraroundtheminingzon